Dose-Finding Study of Vadadustat in Japanese Subjects With Anemia Secondary to Dialysis-Dependent Chronic Kidney Disease (DD-CKD)

Sponsor
Akebia Therapeutics (Industry)
Overall Status
Completed
CT.gov ID
NCT03054350
Collaborator
(none)
60
18
4
13.8
3.3
0.2

Study Details

Study Description

Brief Summary

This is a Phase 2, randomized, double-blind, placebo-controlled, dose-finding study to assess the efficacy, safety, tolerability, pharmacokinetic (PK), and pharmacodynamic (PD) of orally administered vadadustat in Japanese participants with anemia secondary to Dialysis-dependent Chronic Kidney Disease (DD-CKD).

Condition or Disease Intervention/Treatment Phase
Phase 2

Study Design

Study Type:
Interventional
Actual Enrollment :
60 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Triple (Participant, Care Provider, Outcomes Assessor)
Primary Purpose:
Treatment
Official Title:
Phase 2, Randomized, Double-Blind, Placebo Controlled, Dose-Finding Study to Assess the Efficacy, Safety, Pharmacokinetics, and Pharmacodynamics of Vadadustat in Japanese Subjects With Anemia Secondary to Dialysis-Dependent Chronic Kidney Disease (DD-CKD)
Actual Study Start Date :
Dec 1, 2016
Actual Primary Completion Date :
Oct 24, 2017
Actual Study Completion Date :
Jan 24, 2018

Arms and Interventions

Arm Intervention/Treatment
Experimental: Vadadustat, Dose 1

Daily oral dose

Drug: Vadadustat
Daily oral dose
Other Names:
  • AKB-6548
  • Experimental: Vadadustat, Dose 2

    Daily oral dose

    Drug: Vadadustat
    Daily oral dose
    Other Names:
  • AKB-6548
  • Experimental: Vadadustat, Dose 3

    Daily oral dose

    Drug: Vadadustat
    Daily oral dose
    Other Names:
  • AKB-6548
  • Placebo Comparator: Placebo

    Daily oral dose

    Drug: Placebo
    Daily oral dose

    Outcome Measures

    Primary Outcome Measures

    1. Mean Change in Hemoglobin (Hb) Levels From Pre-treatment to the End of the Primary Efficacy Period [Pre-treatment; Week 6]

      The pre-treatment average value for Hb was defined as the average of 3 values obtained prior to treatment, i.e., the qualifying screening value and the Baseline value. Change from Pre-treatment was calculated as the Week 6 value minus the Pre-treatment value.

    Secondary Outcome Measures

    1. Time to Reach the Target Hb Level of 10.0 to 12.0 g/dL From Baseline up to Week 16 [from Baseline up to Week 16]

      Time for this analysis was measured from Day 1 (Baseline) through the point in time during either the Primary Efficacy Period or the Dose Adjustment and Maintenance Period when a participant's Hb level achieved the target range of 10.0 to 12.0 g/dL.

    2. Mean Hb Levels at the End of the Primary Efficacy Period [up to Week 6]

      Data are reported as mean of the actual Week 6 values.

    3. Mean Hb Levels at the End of the Dose Adjustment and Maintenance Period [up to Week 16]

      Data are reported as mean of the actual Week 16 values.

    4. Number of Participants Who Achieved the Target Hb Level of 10.0 to 12.0 g/dL at the End of the Dose Adjustment and Maintenance Period [up to Week 16]

    5. Mean Change in Hb Between Pre-treatment and the End of the Dose Adjustment and Maintenance Period [Pre-treatment; Week 16]

      A pre-treatment average value for Hb was defined as the average of 3 values obtained prior to dosing, i.e., the 2 qualifying screening values and the Baseline value. Change from Pre-treatment was calculated as the Week 16 value minus the Pre-treatment value.

    6. Mean Change in Red Blood Cell (RBC) Count and Absolute Reticulocyte Count From Baseline to the End of the Primary Efficacy Period [Baseline; Week 6]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    7. Mean Change in RBC Count and Absolute Reticulocyte Count From Baseline to the End of the Dose Adjustment and Maintenance Period [Baseline; Week 16]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    8. Mean Change in Hematocrit and Reticulocytes From Baseline to the End of the Primary Efficacy Period [Baseline; Week 6]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    9. Mean Change in Hematocrit and Reticulocytes From Baseline to the End of the Dose Adjustment and Maintenance Period [Baseline; Week 16]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    10. Mean Change in Iron and Total Iron Binding Capacity (TIBC) From Baseline to the End of the Primary Efficacy Period [Baseline; Week 6]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    11. Mean Change in Iron and TIBC From Baseline to the End of the Dose Adjustment and Maintenance Period [Baseline; Week 16]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    12. Mean Change in Transferrin Saturation (TSAT) From Baseline to the End of the Primary Efficacy Period [Baseline; Week 6]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    13. Mean Change in TSAT From Baseline to the End of the Dose Adjustment and Maintenance Period [Baseline; Week 16]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    14. Mean Change in Ferritin and Hepcidin From Baseline to the End of the Primary Efficacy Period [Baseline; Week 6]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    15. Mean Change in Ferritin and Hepcidin From Baseline to the End of the Dose Adjustment and Maintenance Period [Baseline; Week 16]

      Change from Baseline was calculated as the post-Baseline value minus the Baseline value.

    16. Number of Participants Who Required Rescue With a RBC Transfusion From Baseline to the End of the Primary Efficacy Period [Baseline; Week 6]

      Participants who initiated rescue therapy (including RBC transfusion) were required to stop study drug treatment and were discontinued from the study.

    17. Number of Participants Who Required Rescue With RBC Transfusion From Baseline to the End of the Dose Adjustment and Maintenance Period [Baseline; Week 16]

      Participants who initiated rescue therapy (including RBC transfusion) were required to stop study drug treatment and were discontinued from the study.

    18. Number of Participants Who Required Rescue With Erythropoiesis-Stimulating Agents (ESAs) From Baseline to the End of the Primary Efficacy Period [Baseline; Week 6]

      ESA rescue is defined as participants with ESA administration and 1) the participant experienced a clinically significant worsening of their anemia or symptoms of anemia, 2) the participant's Hb level is <9.0 g/dL, and 3) reason for early study withdrawal of worsening of anemia requiring ESA rescue or blood transfusion. Participants who initiated rescue therapy (including ESAs) were required to stop study drug treatment and were discontinued from the study.

    19. Number of Participants Who Required Rescue With ESAs From Baseline to the End of the Dose Adjustment and Maintenance Period [Baseline; Week 16]

      ESA rescue is defined as participants with ESA administration and 1) the participant experienced a clinically significant worsening of their anemia or symptoms of anemia, 2) the participant's Hb level is <9.0 g/dL, and 3) reason for early study withdrawal of worsening of anemia requiring ESA rescue or blood transfusion. Participants who initiated rescue therapy (including ESAs) were required to stop study drug treatment and were discontinued from the study.

    20. Number of the Participants With the Indicated Number of Dose Adjustments From Baseline to the End of the Dose Adjustment and Maintenance Period [up to Week 16]

      Increases in dose were not allowed during the 6-week Primary Efficacy Period.

    21. Plasma Concentration Profile of Vadadustat and Its Metabolites Using a Pre-dose Sample From Week 4 [Week 4, pre-dose]

      Blood samples were collected for analysis.

    22. Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Treatment-emergent Serious Adverse Events (SAEs) in the Primary Efficacy Period [up to Week 6]

      An adverse event (AE) was defined as any untoward medical occurrence (including a clinically significant abnormal laboratory finding) that occurred in the protocol-specified AE reporting period. An AE included medical conditions, signs, and symptoms not previously observed in the participant that emerged during the protocol-specified AE reporting period, including signs or symptoms associated with pre-existing underlying conditions that were not present prior to the AE reporting period. An AE that met one or more of the following criteria or outcomes was classified as serious: death; life-threatening; in-patient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect; was considered a medically important event not meeting the above criteria, but which could jeopardize a participant, or could require medical or surgical intervention to prevent one of the criteria listed in this definition.

    23. Number of Participants With TEAEs and Treatment-emergent SAEs in the Dose Adjustment and Maintenance Period [up to Week 16]

      An AE was defined as any untoward medical occurrence (including a clinically significant abnormal laboratory finding) that occurred in the protocol-specified AE reporting period. An AE included medical conditions, signs, and symptoms not previously observed in the participant that emerged during the protocol-specified AE reporting period, including signs or symptoms associated with pre-existing underlying conditions that were not present prior to the AE reporting period. An AE that met one or more of the following criteria or outcomes was classified as serious: death; life-threatening; in-patient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect; was considered a medically important event not meeting the above criteria, but which could jeopardize a participant, or could require medical or surgical intervention to prevent one of the criteria listed in this definition.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    20 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    • Male and female Japanese participants ≥20 years of age

    • Receiving chronic maintenance hemodialysis for end-stage kidney disease

    • Hemoglobin (Hb) <10.0 grams per deciliter (g/dL)

    Exclusion Criteria:
    • Anemia due to a cause other than chronic kidney disease (CKD) or presence of active bleeding or recent blood loss

    • Sickle cell disease, myelodysplastic syndromes, bone marrow fibrosis, hematologic malignancy, myeloma, hemolytic anemia, thalassemia, or pure red cell aplasia

    • Red blood cell transfusion within 4 weeks prior to or during screening

    • Anticipated to recover adequate kidney function to no longer require hemodialysis during study participation

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Aichi Japan
    2 Ehime Japan
    3 Fukui Japan
    4 Hiroshima Japan
    5 Hokkaido Japan
    6 Hyogo Japan
    7 Ibaraki Japan
    8 Kagoshima Japan
    9 Kochi Japan
    10 Miyagi Japan
    11 Nagano Japan
    12 Nagasaki Japan
    13 Niigata Japan
    14 Oita Japan
    15 Okinawa Japan
    16 Osaka Japan
    17 Saitama Japan
    18 Shizuoka Japan

    Sponsors and Collaborators

    • Akebia Therapeutics

    Investigators

    • Study Director: Akebia Therapeutics, Sponsor GmbH

    Study Documents (Full-Text)

    More Information

    Publications

    None provided.
    Responsible Party:
    Akebia Therapeutics
    ClinicalTrials.gov Identifier:
    NCT03054350
    Other Study ID Numbers:
    • AKB-6548-CI-0022
    First Posted:
    Feb 15, 2017
    Last Update Posted:
    Apr 8, 2021
    Last Verified:
    Mar 1, 2021
    Individual Participant Data (IPD) Sharing Statement:
    Undecided
    Plan to Share IPD:
    Undecided
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Product Manufactured in and Exported from the U.S.:
    Yes
    Keywords provided by Akebia Therapeutics
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details
    Pre-assignment Detail Participants who had not recently received erythropoiesis-stimulating agent (ESA) therapy participated in 2 screening visits (SVs). Participants who had recently received ESA therapy and otherwise met the eligibility criteria were required to washout from ESA therapy prior to evaluation of screening hemoglobin levels and participate in 3 SVs.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 milligrams (mg), administered as 1 tablet once daily (QD), for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target hemoglobin (Hb) of 10.0 to 12.0 grams/deciliter (g/dL) based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Period Title: Primary Efficacy Period (6 Weeks)
    STARTED 15 15 15 5 5 5
    COMPLETED 11 13 13 3 1 2
    NOT COMPLETED 4 2 2 2 4 3
    Period Title: Primary Efficacy Period (6 Weeks)
    STARTED 11 13 13 3 1 2
    COMPLETED 10 13 12 2 1 2
    NOT COMPLETED 1 0 1 1 0 0

    Baseline Characteristics

    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg Total
    Arm/Group Description Participants were randomized to receive vadadustat 150 milligrams (mg), administered as 1 tablet once daily (QD), for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target hemoglobin (Hb) of 10.0 to 12.0 grams/deciliter (g/dL) based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Total of all reporting groups
    Overall Participants 15 15 15 5 5 5 60
    Age (years) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [years]
    61.5
    (11.01)
    64.3
    (8.02)
    65.1
    (9.05)
    60.8
    (12.85)
    61.0
    (15.60)
    70.8
    (8.23)
    63.8
    (10.16)
    Sex: Female, Male (Count of Participants)
    Female
    5
    33.3%
    2
    13.3%
    5
    33.3%
    2
    40%
    3
    60%
    2
    40%
    19
    31.7%
    Male
    10
    66.7%
    13
    86.7%
    10
    66.7%
    3
    60%
    2
    40%
    3
    60%
    41
    68.3%
    Race and Ethnicity Not Collected (Count of Participants)
    Count of Participants [Participants]
    0
    0%
    Hemoglobin Levels (grams per deciliter (g/dL)) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [grams per deciliter (g/dL)]
    8.996
    (0.5229)
    8.793
    (0.5254)
    9.317
    (0.6222)
    8.827
    (0.6405)
    8.950
    (0.7331)
    9.133
    (0.6737)
    9.015
    (0.5935)

    Outcome Measures

    1. Primary Outcome
    Title Mean Change in Hemoglobin (Hb) Levels From Pre-treatment to the End of the Primary Efficacy Period
    Description The pre-treatment average value for Hb was defined as the average of 3 values obtained prior to treatment, i.e., the qualifying screening value and the Baseline value. Change from Pre-treatment was calculated as the Week 6 value minus the Pre-treatment value.
    Time Frame Pre-treatment; Week 6

    Outcome Measure Data

    Analysis Population Description
    Modified Intent-to-Treat Population (mITT): all randomized participants who received at least 1 dose of study medication, had a pre-treatment Hb average, and at least one post-Baseline Hb measurement. The mITT Population was based on the treatment to which participants were randomized.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 milligrams (mg), administered as 1 tablet once daily (QD), for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 15 15 14 14
    Least Squares Mean (Standard Error) [grams per deciliter (g/dL)]
    -0.28
    (0.218)
    0.08
    (0.222)
    0.41
    (0.233)
    -1.48
    (0.226)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0004
    Comments
    Method ANCOVA
    Comments The analysis of covariance (ANCOVA) model includes treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 1.19
    Confidence Interval (2-Sided) 95%
    0.56 to 1.82
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.314
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method ANCOVA
    Comments The ANCOVA model includes treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 1.56
    Confidence Interval (2-Sided) 95%
    0.93 to 2.19
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.315
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method ANCOVA
    Comments The ANCOVA model includes treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 1.89
    Confidence Interval (2-Sided) 95%
    1.23 to 2.54
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.326
    Estimation Comments
    2. Secondary Outcome
    Title Time to Reach the Target Hb Level of 10.0 to 12.0 g/dL From Baseline up to Week 16
    Description Time for this analysis was measured from Day 1 (Baseline) through the point in time during either the Primary Efficacy Period or the Dose Adjustment and Maintenance Period when a participant's Hb level achieved the target range of 10.0 to 12.0 g/dL.
    Time Frame from Baseline up to Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with Hb < 10.0 g/dL at the Baseline visit were included in the analysis.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target hemoglobin (Hb) of 10.0 to 12.0 grams/deciliter (g/dL) based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 8 12 11 0 2 1
    Mean (Standard Deviation) [days]
    69.3
    (25.31)
    79.2
    (24.94)
    54.6
    (27.90)
    57.0
    (19.80)
    85.0
    (NA)
    3. Secondary Outcome
    Title Mean Hb Levels at the End of the Primary Efficacy Period
    Description Data are reported as mean of the actual Week 6 values.
    Time Frame up to Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet once daily QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 11 13 13 6
    Mean (Standard Deviation) [g/dL]
    9.064
    (1.0652)
    9.062
    (0.8412)
    9.969
    (0.7296)
    7.817
    (1.4662)
    4. Secondary Outcome
    Title Mean Hb Levels at the End of the Dose Adjustment and Maintenance Period
    Description Data are reported as mean of the actual Week 16 values.
    Time Frame up to Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet OD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets OD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets OD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    Mean (Standard Deviation) [g/dL]
    10.460
    (0.7501)
    11.285
    (1.7841)
    11.100
    (1.1402)
    8.600
    (0.9899)
    13.200
    (NA)
    12.100
    (1.5556)
    5. Secondary Outcome
    Title Number of Participants Who Achieved the Target Hb Level of 10.0 to 12.0 g/dL at the End of the Dose Adjustment and Maintenance Period
    Description
    Time Frame up to Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    Count of Participants [Participants]
    7
    46.7%
    11
    73.3%
    7
    46.7%
    0
    0%
    0
    0%
    1
    20%
    6. Secondary Outcome
    Title Mean Change in Hb Between Pre-treatment and the End of the Dose Adjustment and Maintenance Period
    Description A pre-treatment average value for Hb was defined as the average of 3 values obtained prior to dosing, i.e., the 2 qualifying screening values and the Baseline value. Change from Pre-treatment was calculated as the Week 16 value minus the Pre-treatment value.
    Time Frame Pre-treatment; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    Mean (Standard Deviation) [g/dL]
    1.397
    (0.5755)
    2.444
    (1.7807)
    1.644
    (1.4973)
    -0.233
    (0.1414)
    3.800
    (NA)
    3.000
    (0.2828)
    7. Secondary Outcome
    Title Mean Change in Red Blood Cell (RBC) Count and Absolute Reticulocyte Count From Baseline to the End of the Primary Efficacy Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 11 13 13 6
    RBC Count
    -0.01
    (0.073)
    0.08
    (0.069)
    0.20
    (0.069)
    -0.30
    (0.099)
    Absolute Reticulocyte Count
    0.02
    (0.005)
    0.02
    (0.004)
    0.03
    (0.004)
    0.01
    (0.006)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments RBC Count
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0232
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups;1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.29
    Confidence Interval (2-Sided) 95%
    0.04 to 0.54
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.122
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments RBC Count
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0033
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.38
    Confidence Interval (2-Sided) 95%
    0.13 to 0.62
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.121
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments RBC Count
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0002
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.50
    Confidence Interval (2-Sided) 95%
    0.26 to 0.74
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.120
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments Absolute Reticulocyte Count
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.3289
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.01
    Confidence Interval (2-Sided) 94%
    -0.01 to 0.02
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.008
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments Absolute Reticulocyte Count
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.2607
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.01
    Confidence Interval (2-Sided) 95%
    -0.01 to 0.02
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.007
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments Absolute Reticulocyte Count
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0252
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.02
    Confidence Interval (2-Sided) 95%
    0.00 to 0.03
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.007
    Estimation Comments
    8. Secondary Outcome
    Title Mean Change in RBC Count and Absolute Reticulocyte Count From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    RBC Count
    0.454
    (0.2225)
    0.819
    (0.5127)
    0.503
    (0.5056)
    0.065
    (0.0212)
    1.160
    (NA)
    1.035
    (0.0778)
    Absolute Reticulocyte Count
    0.017
    (0.0169)
    0.021
    (0.0180)
    0.016
    (0.0162)
    0.016
    (0.0083)
    0.024
    (NA)
    0.014
    (0.0217)
    9. Secondary Outcome
    Title Mean Change in Hematocrit and Reticulocytes From Baseline to the End of the Primary Efficacy Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 11 13 13 6
    Hematocrit
    0.67
    (0.770)
    1.98
    (0.737)
    3.30
    (0.737)
    -2.63
    (1.045)
    Reticulocytes
    0.64
    (0.158)
    0.57
    (0.141)
    0.71
    (0.140)
    0.39
    (0.212)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments Hematocrit
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0154
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 3.31
    Confidence Interval (2-Sided) 95%
    0.67 to 5.94
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 1.303
    Estimation Comments
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments Hematocrit
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0008
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 4.61
    Confidence Interval (2-Sided) 95%
    2.06 to 7.16
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 1.261
    Estimation Comments
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments Hematocrit
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 5.93
    Confidence Interval (2-Sided) 95%
    3.31 to 8.56
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 1.296
    Estimation Comments
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments Reticulocytes
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.3572
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.25
    Confidence Interval (2-Sided) 95%
    -0.30 to 0.81
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.273
    Estimation Comments
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments Reticulocytes
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.4758
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.18
    Confidence Interval (2-Sided) 95%
    -0.33 to 0.69
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.252
    Estimation Comments
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments Reticulocytes
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.2048
    Comments
    Method ANCOVA
    Comments The ANCOVA model will include treatment assignment (3 dosed groups; 1 placebo group) and pre-treatment Hb value as a covariate.
    Method of Estimation Estimation Parameter Least squares mean difference
    Estimated Value 0.33
    Confidence Interval (2-Sided) 95%
    -0.19 to 0.84
    Parameter Dispersion Type: Standard Error of the Mean
    Value: 0.254
    Estimation Comments
    10. Secondary Outcome
    Title Mean Change in Hematocrit and Reticulocytes From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    Hematocrit
    5.12
    (2.105)
    8.92
    (5.100)
    5.63
    (4.921)
    1.20
    (0.000)
    12.90
    (NA)
    10.70
    (1.697)
    Reticulocytes
    0.32
    (0.636)
    0.33
    (0.686)
    0.24
    (0.547)
    0.55
    (0.212)
    0.40
    (NA)
    0.15
    (0.636)
    11. Secondary Outcome
    Title Mean Change in Iron and Total Iron Binding Capacity (TIBC) From Baseline to the End of the Primary Efficacy Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 11 13 13 6
    Iron
    -3.3
    (26.60)
    -1.5
    (19.50)
    -8.1
    (21.95)
    -1.5
    (26.64)
    TIBC
    35.4
    (28.72)
    67.5
    (25.72)
    80.7
    (39.04)
    15.8
    (8.08)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments Iron
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.9373
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments Iron
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.6623
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments Iron
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.9374
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments TIBC
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.2085
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments TIBC
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0016
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments TIBC
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0001
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    12. Secondary Outcome
    Title Mean Change in Iron and TIBC From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    Iron
    -18.5
    (24.01)
    -8.7
    (24.29)
    0.9
    (48.22)
    -9.5
    (30.41)
    -7.0
    (NA)
    15.0
    (43.84)
    TIBC
    58.5
    (44.12)
    80.9
    (29.42)
    85.4
    (39.91)
    33.0
    (2.83)
    108.0
    (NA)
    78.0
    (62.23)
    13. Secondary Outcome
    Title Mean Change in Transferrin Saturation (TSAT) From Baseline to the End of the Primary Efficacy Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 11 13 13 6
    Mean (Standard Deviation) [percentage]
    -6.51
    (11.621)
    -10.14
    (11.294)
    -12.46
    (9.544)
    -2.78
    (12.822)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.2708
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0966
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0424
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    14. Secondary Outcome
    Title Mean Change in TSAT From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    Mean (Standard Deviation) [percentage]
    -14.25
    (12.069)
    -13.79
    (13.549)
    -10.93
    (12.627)
    -12.50
    (18.526)
    -17.10
    (NA)
    -4.70
    (12.021)
    15. Secondary Outcome
    Title Mean Change in Ferritin and Hepcidin From Baseline to the End of the Primary Efficacy Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 11 13 13 6
    Ferritin
    -51.20
    (58.855)
    -68.67
    (54.707)
    -104.49
    (49.558)
    12.63
    (32.424)
    Hepcidin
    -53.465
    (43.5531)
    -73.587
    (32.3547)
    -104.301
    (36.7636)
    -11.802
    (13.6518)
    Statistical Analysis 1
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments Ferritin
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0207
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 2
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments Ferritin
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0022
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 3
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments Ferritin
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 4
    Statistical Analysis Overview Comparison Group Selection Vadadustat 150 mg, Placebo
    Comments Hepcidin
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0062
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 5
    Statistical Analysis Overview Comparison Group Selection Vadadustat 300 mg, Placebo
    Comments Hepcidin
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value 0.0002
    Comments
    Method ANCOVA
    Comments test of treatment group difference based on ANCOVA model
    Statistical Analysis 6
    Statistical Analysis Overview Comparison Group Selection Vadadustat 600 mg, Placebo
    Comments Hepcidin
    Type of Statistical Test Superiority
    Comments
    Statistical Test of Hypothesis p-Value <0.0001
    Comments test of treatment group difference based on ANCOVA model
    Method ANCOVA
    Comments
    16. Secondary Outcome
    Title Mean Change in Ferritin and Hepcidin From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description Change from Baseline was calculated as the post-Baseline value minus the Baseline value.
    Time Frame Baseline; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 10 13 12 2 1 2
    Ferritin
    -105.09
    (55.837)
    -119.28
    (84.000)
    -113.52
    (54.559)
    -43.05
    (81.954)
    -150.70
    (NA)
    -76.95
    (42.356)
    Hepcidin
    -73.826
    (50.9042)
    -99.367
    (51.3174)
    -106.838
    (40.1472)
    -95.940
    (98.7262)
    -122.300
    (NA)
    -35.140
    (62.9184)
    17. Secondary Outcome
    Title Number of Participants Who Required Rescue With a RBC Transfusion From Baseline to the End of the Primary Efficacy Period
    Description Participants who initiated rescue therapy (including RBC transfusion) were required to stop study drug treatment and were discontinued from the study.
    Time Frame Baseline; Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 15 15 14 14
    Count of Participants [Participants]
    0
    0%
    0
    0%
    1
    6.7%
    3
    60%
    18. Secondary Outcome
    Title Number of Participants Who Required Rescue With RBC Transfusion From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description Participants who initiated rescue therapy (including RBC transfusion) were required to stop study drug treatment and were discontinued from the study.
    Time Frame Baseline; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 15 15 14 5 4 5
    Count of Participants [Participants]
    1
    6.7%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    0
    0%
    19. Secondary Outcome
    Title Number of Participants Who Required Rescue With Erythropoiesis-Stimulating Agents (ESAs) From Baseline to the End of the Primary Efficacy Period
    Description ESA rescue is defined as participants with ESA administration and 1) the participant experienced a clinically significant worsening of their anemia or symptoms of anemia, 2) the participant's Hb level is <9.0 g/dL, and 3) reason for early study withdrawal of worsening of anemia requiring ESA rescue or blood transfusion. Participants who initiated rescue therapy (including ESAs) were required to stop study drug treatment and were discontinued from the study.
    Time Frame Baseline; Week 6

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 15 15 14 14
    Count of Participants [Participants]
    4
    26.7%
    2
    13.3%
    1
    6.7%
    8
    160%
    20. Secondary Outcome
    Title Number of Participants Who Required Rescue With ESAs From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description ESA rescue is defined as participants with ESA administration and 1) the participant experienced a clinically significant worsening of their anemia or symptoms of anemia, 2) the participant's Hb level is <9.0 g/dL, and 3) reason for early study withdrawal of worsening of anemia requiring ESA rescue or blood transfusion. Participants who initiated rescue therapy (including ESAs) were required to stop study drug treatment and were discontinued from the study.
    Time Frame Baseline; Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population. Only participants with available data were analyzed.
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 15 15 14 5 4 5
    Count of Participants [Participants]
    0
    0%
    0
    0%
    0
    0%
    1
    20%
    0
    0%
    0
    0%
    21. Secondary Outcome
    Title Number of the Participants With the Indicated Number of Dose Adjustments From Baseline to the End of the Dose Adjustment and Maintenance Period
    Description Increases in dose were not allowed during the 6-week Primary Efficacy Period.
    Time Frame up to Week 16

    Outcome Measure Data

    Analysis Population Description
    mITT Population
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 15 15 14 5 4 5
    0 dose adjustments
    5
    33.3%
    3
    20%
    9
    60%
    2
    40%
    3
    60%
    3
    60%
    1 dose adjustment
    2
    13.3%
    2
    13.3%
    2
    13.3%
    1
    20%
    0
    0%
    0
    0%
    2 dose adjustments
    5
    33.3%
    8
    53.3%
    3
    20%
    1
    20%
    1
    20%
    2
    40%
    3 or more dose adjustments
    3
    20%
    2
    13.3%
    0
    0%
    1
    20%
    0
    0%
    0
    0%
    22. Secondary Outcome
    Title Plasma Concentration Profile of Vadadustat and Its Metabolites Using a Pre-dose Sample From Week 4
    Description Blood samples were collected for analysis.
    Time Frame Week 4, pre-dose

    Outcome Measure Data

    Analysis Population Description
    Pharmacokinetic (PK) Population: all participants in the Safety Population (all enrolled participants who received at least 1 dose of study medication) who had a pre-dose PK sample at Week 4
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 12 13 13 0
    Vadadustat
    4343.54
    (175.17)
    7561.36
    (134.77)
    15083.03
    (46.77)
    O-glucuronide
    8667.97
    (73.79)
    14623.89
    (67.44)
    36476.33
    (57.18)
    Acyl-glucuronide
    12.019
    (16.55)
    12.174
    (8.10)
    22.765
    (70.53)
    23. Secondary Outcome
    Title Number of Participants With Treatment-emergent Adverse Events (TEAEs) and Treatment-emergent Serious Adverse Events (SAEs) in the Primary Efficacy Period
    Description An adverse event (AE) was defined as any untoward medical occurrence (including a clinically significant abnormal laboratory finding) that occurred in the protocol-specified AE reporting period. An AE included medical conditions, signs, and symptoms not previously observed in the participant that emerged during the protocol-specified AE reporting period, including signs or symptoms associated with pre-existing underlying conditions that were not present prior to the AE reporting period. An AE that met one or more of the following criteria or outcomes was classified as serious: death; life-threatening; in-patient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect; was considered a medically important event not meeting the above criteria, but which could jeopardize a participant, or could require medical or surgical intervention to prevent one of the criteria listed in this definition.
    Time Frame up to Week 6

    Outcome Measure Data

    Analysis Population Description
    Safety Population: all enrolled participants who received at least 1 dose of study medication. The Safety Population was based on the actual treatment that participants received
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks.
    Measure Participants 15 15 15 15
    TEAEs
    8
    53.3%
    11
    73.3%
    6
    40%
    6
    120%
    Treatment-emergent SAEs
    0
    0%
    0
    0%
    3
    20%
    1
    20%
    24. Secondary Outcome
    Title Number of Participants With TEAEs and Treatment-emergent SAEs in the Dose Adjustment and Maintenance Period
    Description An AE was defined as any untoward medical occurrence (including a clinically significant abnormal laboratory finding) that occurred in the protocol-specified AE reporting period. An AE included medical conditions, signs, and symptoms not previously observed in the participant that emerged during the protocol-specified AE reporting period, including signs or symptoms associated with pre-existing underlying conditions that were not present prior to the AE reporting period. An AE that met one or more of the following criteria or outcomes was classified as serious: death; life-threatening; in-patient hospitalization or prolongation of existing hospitalization; persistent or significant disability/incapacity; congenital anomaly/birth defect; was considered a medically important event not meeting the above criteria, but which could jeopardize a participant, or could require medical or surgical intervention to prevent one of the criteria listed in this definition.
    Time Frame up to Week 16

    Outcome Measure Data

    Analysis Population Description
    Safety Population
    Arm/Group Title Vadadustat 150 mg Vadadustat 300 mg Vadadustat 600 mg Placebo to Vadadustat 150 mg Placebo to Vadadustat 300 mg Placebo to Vadadustat 600 mg
    Arm/Group Description Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    Measure Participants 15 15 15 5 5 5
    TEAEs
    9
    60%
    9
    60%
    9
    60%
    1
    20%
    1
    20%
    2
    40%
    Treatment-emergent SAEs
    1
    6.7%
    1
    6.7%
    1
    6.7%
    0
    0%
    0
    0%
    0
    0%

    Adverse Events

    Time Frame up to Week 18
    Adverse Event Reporting Description
    Arm/Group Title Primary Efficacy Period: 150 mg Vadadustat Primary Efficacy Period: 300 mg Vadadustat Primary Efficacy Period: 600 mg Vadadustat Primary Efficacy Period: Placebo Matched to 150 mg Vadadustat Primary Efficacy Period: Placebo Matched to 300 mg Vadadustat Primary Efficacy Period: Placebo Matched to 600 mg Vadadustat Dose Adjustment and Maintenance: 150 mg Vadadustat Dose Adjustment and Maintenance: 300 mg Vadadustat Dose Adjustment and Maintenance: 600 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 150 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 300 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 600 mg Vadadustat
    Arm/Group Description Participants were randomized to receive vadadustat 150 milligrams (mg), administered as 1 tablet once daily (QD), for 6 weeks. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks. Participants were randomized to receive matching placebo for 6 weeks. Participants were randomized to receive vadadustat 150 mg, administered as 1 tablet QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target hemoglobin (Hb) of 10.0 to 12.0 grams/deciliter (g/dL) based on dose adjustment guidelines. Participants were randomized to receive vadadustat 300 mg, administered as 2 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive vadadustat 600 mg, administered as 4 tablets QD, for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 150 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 300 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines. Participants were randomized to receive matching placebo for 6 weeks during the Primary Efficacy Period. During the 10-week Dose Adjustment and Maintenance Period, participants randomized to receive placebo in the 6-week Efficacy Period were switched to vadadustat 600 mg, and the dose was adjusted to achieve a target Hb of 10.0 to 12.0 g/dL based on dose adjustment guidelines.
    All Cause Mortality
    Primary Efficacy Period: 150 mg Vadadustat Primary Efficacy Period: 300 mg Vadadustat Primary Efficacy Period: 600 mg Vadadustat Primary Efficacy Period: Placebo Matched to 150 mg Vadadustat Primary Efficacy Period: Placebo Matched to 300 mg Vadadustat Primary Efficacy Period: Placebo Matched to 600 mg Vadadustat Dose Adjustment and Maintenance: 150 mg Vadadustat Dose Adjustment and Maintenance: 300 mg Vadadustat Dose Adjustment and Maintenance: 600 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 150 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 300 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 600 mg Vadadustat
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 8/15 (53.3%) 11/15 (73.3%) 6/15 (40%) 2/5 (40%) 2/5 (40%) 2/5 (40%) 9/15 (60%) 9/15 (60%) 9/15 (60%) 1/5 (20%) 1/5 (20%) 2/5 (40%)
    Serious Adverse Events
    Primary Efficacy Period: 150 mg Vadadustat Primary Efficacy Period: 300 mg Vadadustat Primary Efficacy Period: 600 mg Vadadustat Primary Efficacy Period: Placebo Matched to 150 mg Vadadustat Primary Efficacy Period: Placebo Matched to 300 mg Vadadustat Primary Efficacy Period: Placebo Matched to 600 mg Vadadustat Dose Adjustment and Maintenance: 150 mg Vadadustat Dose Adjustment and Maintenance: 300 mg Vadadustat Dose Adjustment and Maintenance: 600 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 150 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 300 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 600 mg Vadadustat
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/15 (0%) 0/15 (0%) 3/15 (20%) 0/5 (0%) 1/5 (20%) 0/5 (0%) 1/15 (6.7%) 1/15 (6.7%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Cardiac disorders
    Pericarditis 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Gastrointestinal disorders
    Gastric ulcer haemorrhage 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Hepatobiliary disorders
    Cholecystitis acute 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Infections and infestations
    Enteritis infectious 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Injury, poisoning and procedural complications
    Arteriovenous fistula site complication 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 1/5 (20%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Shunt stenosis 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Nervous system disorders
    Cerebral haemorrhage 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Toxic encephalopathy 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Psychiatric disorders
    Anxiety 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Other (Not Including Serious) Adverse Events
    Primary Efficacy Period: 150 mg Vadadustat Primary Efficacy Period: 300 mg Vadadustat Primary Efficacy Period: 600 mg Vadadustat Primary Efficacy Period: Placebo Matched to 150 mg Vadadustat Primary Efficacy Period: Placebo Matched to 300 mg Vadadustat Primary Efficacy Period: Placebo Matched to 600 mg Vadadustat Dose Adjustment and Maintenance: 150 mg Vadadustat Dose Adjustment and Maintenance: 300 mg Vadadustat Dose Adjustment and Maintenance: 600 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 150 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 300 mg Vadadustat Dose Adjustment and Maintenance: Placebo to 600 mg Vadadustat
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 8/15 (53.3%) 11/15 (73.3%) 5/15 (33.3%) 2/5 (40%) 2/5 (40%) 2/5 (40%) 9/15 (60%) 9/15 (60%) 9/15 (60%) 1/5 (20%) 1/5 (20%) 2/5 (40%)
    Blood and lymphatic system disorders
    Anaemia macrocytic 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Cardiac disorders
    Cardiac failure chronic 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Eye disorders
    Diabetic retinopathy 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Gastrointestinal disorders
    Abdominal pain 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Constipation 1/15 (6.7%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Diarrhoea 0/15 (0%) 2/15 (13.3%) 2/15 (13.3%) 1/5 (20%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 1/5 (20%) 0/5 (0%) 1/5 (20%)
    Faeces soft 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Nausea 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Pancreatic cyst 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Enterocolitis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Stomatitis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Vomiting 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    General disorders
    Chest discomfort 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 1/5 (20%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Pyrexia 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Catheter site erosion 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%)
    Vessel puncture site pruritus 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%)
    Hepatobiliary disorders
    Cholelithiasis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Infections and infestations
    Bronchitis 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Herpes zoster 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%)
    Nasopharyngitis 1/15 (6.7%) 5/15 (33.3%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 4/15 (26.7%) 2/15 (13.3%) 0/15 (0%) 0/5 (0%) 1/5 (20%) 0/5 (0%)
    Pneumonia 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 1/5 (20%) 0/5 (0%) 0/5 (0%)
    Tracheobronchitis 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Upper respiratory tract infection 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Conjunctivitis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%)
    Gingivitis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Periodontitis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Injury, poisoning and procedural complications
    Contusion 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 1/5 (20%) 0/5 (0%) 2/15 (13.3%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Excoriation 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Foreign body 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Shunt stenosis 1/15 (6.7%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Arteriovenous fistula site complication 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Thermal burn 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Vascular graft stenosis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Investigations
    Blood parathyroid hormone increased 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Blood pressure increased 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Blood uric acid decreased 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 1/5 (20%) 0/5 (0%)
    Metabolism and nutrition disorders
    Hypocalcaemia 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Musculoskeletal and connective tissue disorders
    Arthralgia 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 1/5 (20%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Musculoskeletal pain 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 1/5 (20%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Myalgia 0/15 (0%) 0/15 (0%) 0/15 (0%) 1/5 (20%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Pain in extremity 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Back pain 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Muscle spasms 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Tenosynovitis 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Neoplasms benign, malignant and unspecified (incl cysts and polyps)
    Skin papilloma 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Nervous system disorders
    Headache 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 2/15 (13.3%) 0/15 (0%) 1/15 (6.7%) 1/5 (20%) 0/5 (0%) 1/5 (20%)
    Diabetic neuropathy 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Post herpetic neuralgia 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Restless legs syndrome 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Psychiatric disorders
    Insomnia 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 1/5 (20%) 0/5 (0%) 1/15 (6.7%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Respiratory, thoracic and mediastinal disorders
    Cough 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Asthma 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Rhinitis allergic 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Sleep apnoea syndrome 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 1/15 (6.7%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Upper respiratory tract inflammation 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Skin and subcutaneous tissue disorders
    Neurodermatitis 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Pruritus 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Dermal cyst 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 1/15 (6.7%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Eczema 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%)
    Ingrowing nail 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Rash pruritic 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 1/15 (6.7%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%)
    Vascular disorders
    Haemorrhage 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 0/5 (0%) 0/15 (0%) 0/15 (0%) 0/15 (0%) 0/5 (0%) 0/5 (0%) 1/5 (20%)

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

    Principal Investigators are NOT employed by the organization sponsoring the study.

    Results Point of Contact

    Name/Title Akebia Therapeutics
    Organization Akebia Therapeutics
    Phone (617) 844-6128
    Email trials@akebia.com
    Responsible Party:
    Akebia Therapeutics
    ClinicalTrials.gov Identifier:
    NCT03054350
    Other Study ID Numbers:
    • AKB-6548-CI-0022
    First Posted:
    Feb 15, 2017
    Last Update Posted:
    Apr 8, 2021
    Last Verified:
    Mar 1, 2021