A Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of Once-daily Oral Avatrombopag in Japanese Subjects With Chronic Liver Diseases and Thrombocytopenia
Sponsor
Eisai Co., Ltd. (Industry)
Overall Status
Completed
CT.gov ID
NCT02227693
Collaborator
(none)
39
14
4
9
2.8
0.3
Study Details
Study Description
Brief Summary
This is a phase 2, randomized, double-blind, placebo-controlled, parallel group study using avatrombopag for Japanese subjects with thrombocytopenia associated with chronic liver disease. This study will assess the effect of avatrombopag on platelet counts in Japanese subjects. Subjects will be enrolled into 2 cohorts according to the mean platelet count measured at Screening and Baseline. Within the lower baseline platelet count cohort (less than 40 x 109/L), subjects will be randomized in a 1:1:1:3 ratio to receive placebo, 20 mg avatrombopag, 40 mg avatrombopag, or 60 mg avatrombopag for 5 days. Within the higher baseline platelet count cohort (from 40 to less than 50 x 109/L), subjects will be randomized in a 2:1:2 ratio to receive placebo, 20 mg avatrombopag, or 40 mg avatrombopag for 5 days.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
Phase 2 |
Detailed Description
This study will consist of Prerandomization Phase and Randomization Phase. The Prerandomization Phase includes a Screening Period (Day -28 to Day -1) and a Baseline Period (Day 1). During the Prerandomization Phase, participants will be divided into two cohorts based on the platelet count: Low Platelet Count Cohort and High Platelet Count Cohort. Participants in Low Platelet Count Cohort will be randomized to receive one of the four treatments: Placebo, Avatrombopag 20 mg, Avatrombopag 40 mg, or Avatrombopag 60 mg. Participants in High Platelet Count Cohort will be randomized to receive one of the three treatments: Placebo, Avatrombopag 20 mg, or Avatrombopag 40 mg.
The Randomization Phase includes the Treatment Period and the Follow-up Period. The Follow-up Period comprises 3 visits: Visit 4 (5 to 8 days after last dose of study drug [Study Day 10 to 13]), Visit 5 (12 to 15 days after last dose of study drug [Study Day 17 to 20]), and 30 days after receiving the last dose of study drug.
Study Design
Study Type:
Interventional
Actual Enrollment
:
39 participants
Allocation:
Randomized
Intervention Model:
Parallel Assignment
Masking:
Double (Participant, Investigator)
Primary Purpose:
Treatment
Official Title:
A Phase 2, Randomized, Double-Blind, Placebo-Controlled, Parallel-Group Study to Evaluate the Efficacy, Safety, and Pharmacokinetics of Once-daily Oral Avatrombopag in Japanese Subjects With Chronic Liver Disease and Thrombocytopenia
Actual Study Start Date
:
Jul 1, 2014
Actual Primary Completion Date
:
Apr 1, 2015
Actual Study Completion Date
:
Apr 1, 2015
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: avatrombopag 20-mg 20 mg avatrombopag (1 x 20 mg tablet and 2 x 20 mg matching placebo tablets) once daily on Days 1 through 5 |
Drug: avatrombopag
E5501 (avatrombopag) 20-mg tablets
|
| Experimental: avatrombopag 40-mg 40 mg avatrombopag (2 x 20 mg tablets and 1 x 20 mg matching placebo tablet) once daily on Days 1 through 5 |
Drug: avatrombopag
E5501 (avatrombopag) 20-mg tablets
|
| Experimental: avatrombopag 60-mg 60 mg avatrombopag (3 x 20 mg tablets) once daily on Days 1 through 5 |
Drug: avatrombopag
E5501 (avatrombopag) 20-mg tablets
|
| Placebo Comparator: placebo l Placebo (3 x 20-mg matching placebo tablets) once daily on Days 1 through 5 |
Drug: Placebo
Placebo matching 20-mg tablets
|
Outcome Measures
Primary Outcome Measures
- Percentage of Participants With Platelet Count Greater Than or Equal to 50 x 10^9/L and at Least 20 x 10^9/L Increase From Baseline at Visit 4 [Baseline and Visit 4 (Day 10)]
Responders were defined as participants whose platelet count was greater than or equal to 50×10^9/liter (L) and change from baseline was at least 20×10^9/L at Visit 4. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. Two-sided 95% confidence interval (CI) is calculated by Clopper and Pearson method.
Secondary Outcome Measures
- Percentage of Participants With Platelet Count Greater Than or Equal to 50 x 10^9/L at Each Visit [Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35)]
Responders were defined as the participants whose platelet count greater than or equal to 50 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. Two-sided 95% CI is calculated by Clopper and Pearson method.
- Percentage of Participants With Platelet Count Greater Than or Equal to 75 x 10^9/L at Each Visit [Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35)]
Responders were defined as the participants whose platelet count greater than or equal to 75 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. Two-sided 95% CI is calculated by Clopper and Pearson method.
- Percentage of Participants With Platelet Count Greater Than or Equal to 150 x 10^9/L At Each Visit [Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35)]
Responders were defined as the participants whose platelet count greater than or equal to 150 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis.
- Percentage of Participants With Platelet Count Greater Than or Equal to 200 x 10^9/L At Each Visit [Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35)]
Responders were defined as the participants whose platelet count greater than or equal to 200 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis.
- Platelet Count and Change From Baseline in Platelet Count by Visit [Baseline, Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35)]
Other Outcome Measures
- Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) [From the date of first dose of study drug up to 30 days after the last dose of the study drug, up to approximately 10 months]
Safety assessments consisted of monitoring and recording all AEs and SAEs, regular monitoring of hematology, blood chemistry, and urine values; periodic measurement of vital signs and electrocardiograms; physical examinations; and Doppler sonography. AE severity was graded using Common Terminology Criteria for Adverse Events (CTCAE) version 4.0, where Grade 1 = mild, Grade 2 = moderate, Grade 3 = Severe, Grade 4 = Life-threatening, and Grade 5 = Death related to the AE. All AEs graded as 4 or 5 were considered to be serious. A treatment-emergent adverse event (TEAE) was defined as an AE that started on or after the date of first dose of study drug, up to 30 days after the last dose of study drug. For each category, a participant with two or more adverse events in that category was counted only once. Treatment-related TEAEs were considered by the investigator to be possibly or probably related to study drug or TEAEs with a missing causality.
- Number of Participants With Treatment-emergent Markedly Abnormal Laboratory Value (TEMAV) for Haematology [From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months)]
- Number of Participants With Clinically Significant Findings in Laboratory Values for Serum [From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months)]
- Number of Participants With Clinically Significant Findings in Laboratory Values for Urinalysis [From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months)]
- Number of Participants With Clinically Significant Change From Baseline in Vital Sign Values [From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months)]
- Number of Participants With Markedly Abnormal Electrocardiographs [From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months)]
Eligibility Criteria
Criteria
Ages Eligible for Study:
20 Years
and Older
Sexes Eligible for Study:
All
Accepts Healthy Volunteers:
No
Inclusion Criteria
-
Japanese subjects greater than or equal to 20 years of age at Screening with chronic liver disease.
-
Subjects who have a mean baseline platelet count of less than 50 x 109/L. Platelet counts will be measured on 2 separate occasions, during the Screening Period and at Baseline, and must be performed at least one day apart with neither platelet count greater than 60 x 109/L.
-
Model For End-stage Liver Disease (MELD) score 24 at Screening.
-
If taking inhibitors of P glycoprotein (P-gp), except for verapamil, dose must be stable for 7 days prior to Screening.
-
Provide written informed consent.
-
Willing and able to comply with all aspects of the protocol.
Exclusion Criteria
-
Any history of arterial or venous thrombosis, including partial or complete thrombosis.
-
Evidence of thrombosis (partial or complete) in the main portal vein, portal vein branches, or any part of the splenic mesenteric system at Screening.
-
Portal vein blood flow velocity rate less than 10 cm/second at Screening.
-
Hepatic encephalopathy that cannot be effectively treated.
-
Subjects with HCC with Barcelona Clinic Liver Cancer (BCLC) staging classification C or D.
-
Platelet transfusion or receipt of blood products containing platelets within 7 days of Screening. However packed red blood cells are permitted.
-
Heparin, warfarin, nonsteroidal anti-inflammatory drugs (NSAID), aspirin, verapamil, and antiplatelet therapy with ticlopidine or glycoprotein IIb/IIIa antagonists (eg, tirofiban) within 7 days of Screening.
-
Use of erythropoietin stimulating agents within 7 days of Screening.
-
Interferon (IFN) use within 14 days of Screening.
-
Estrogen-containing hormonal contraceptive or hormone replacement therapy use within 30 days of Screening.
-
Active infection requiring systemic antibiotic therapy within 7 days of Screening. However, prophylactic use of antibiotics is permitted.
-
Alcohol abuse, alcohol dependence syndrome, drug abuse, or drug dependence within 6 months of the study start (unless participating in a controlled rehabilitation program) or acute alcoholic hepatitis (chronic alcoholic hepatitis is allowed) within 6 months of the study start.
-
Known to be human immunodeficiency virus positive.
-
Any clinically significant acute or active bleeding (eg, gastrointestinal, central nervous system).
-
Known history of any primary hematologic disorder (eg, immune thrombocytopenic purpura, myelodysplastic syndrome).
-
Known medical history of genetic prothrombotic syndromes (eg, Factor V Leiden; prothrombin G20210A; ATIII deficiency etc.)
-
Subjects with a history of significant cardiovascular disease (eg, congestive heart failure New York Heart Association Grade III/IV, arrhythmia known to increase the risk of thromboembolic events [eg, atrial fibrillation], coronary artery stent placement, angioplasty, and coronary artery bypass grafting).
-
Females of childbearing potential who have had unprotected sexual intercourse within 30 days before study entry and who do not agree to use a highly effective method of contraception (eg, total abstinence, an intrauterine device, a double-barrier method [such as condom plus diaphragm with spermicide], a progesterone only contraceptive implant/injection, or have a vasectomized partner with confirmed azoospermia) throughout the entire study period and for 30 days after study drug discontinuation. If currently abstinent, the subject must agree to use a double barrier method as described above if she becomes sexually active during the study period or for 30 days after study drug discontinuation. All females will be considered to be of childbearing potential unless they are postmenopausal (at least 12 months consecutive amenorrhea in the appropriate age group and without other known or suspected cause) or have been sterilized surgically (ie, bilateral tubal ligation, hysterectomy, or bilateral oophorectomy) at least 1 month before dosing.
-
Females who are lactating or pregnant at Screening or Baseline (as documented by a positive serum beta-human chorionic gonadotropin [B-hCG] test with a minimum sensitivity 25 IU/L or equivalent units of B-hCG). A separate baseline assessment is required if a negative screening pregnancy test was obtained more than 72 hours before the first dose of study drug.
-
Post liver transplant subjects.
-
Any subject who has previously received avatrombopag.
-
Hypersensitivity to avatrombopag maleate or any of its excipients.
-
Hemoglobin levels less than or equal to 8.0 or greater than or equal to 16.0 g/dL at Screening.
-
White blood cell count less than or equal to 1.5 x 109/L or greater than or equal to 15.0 x 109/L at Screening.
-
Serum sodium level less than or equal to 130 milliequivalents/L at Screening.
-
Current malignancy including solid tumors and hematologic malignancies (except HCC).
-
Any history of a medical condition or a concomitant medical condition that, in the opinion of the investigator(s), would compromise the subject's ability to safely complete the study.
-
Currently enrolled in another clinical trial or used any investigational drug or device within 30 days of Screening.
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Matsuyama | Ehime | Japan | ||
| 2 | Iizuka | Fukuoka | Japan | ||
| 3 | Kitakyushu | Fukuoka | Japan | ||
| 4 | Kurume | Fukuoka | Japan | ||
| 5 | Kure | Hiroshima | Japan | ||
| 6 | Sapporo | Hokkaido | Japan | ||
| 7 | Sagamihara | Kanagawa | Japan | ||
| 8 | Ikeda | Osaka | Japan | ||
| 9 | Takatsuki | Osaka | Japan | ||
| 10 | Minato-Ku | Tokyo | Japan | ||
| 11 | Fukuoka | Japan | |||
| 12 | Kumamoto | Japan | |||
| 13 | Osaka | Japan | |||
| 14 | Yamanashi | Japan |
Sponsors and Collaborators
- Eisai Co., Ltd.
Investigators
None specified.Study Documents (Full-Text)
None provided.More Information
Publications
None provided.Responsible Party:
Eisai Co., Ltd.
ClinicalTrials.gov Identifier:
NCT02227693
Other Study ID Numbers:
- E5501-J081-204
First Posted:
Aug 28, 2014
Last Update Posted:
Feb 28, 2019
Last Verified:
Dec 1, 2017
Keywords provided by Eisai Co., Ltd.
Additional relevant MeSH terms:
Study Results
Participant Flow
| Recruitment Details | |
|---|---|
| Pre-assignment Detail | A total of 56 participants were screened to enter into the study. Of these, 17 participants were screening failures, and 39 were randomized into the study. Of the 17 screening failures, 14 participants failed to meet the inclusion/exclusion criteria, 1 participant withdrew consent, and 2 participants were excluded for scheduling conflicts. |
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) |
|---|---|---|---|---|
| Arm/Group Description | Participants took 60 milligrams (mg) placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. |
| Period Title: Overall Study | ||||
| STARTED | 11 | 7 | 11 | 10 |
| COMPLETED | 11 | 7 | 11 | 10 |
| NOT COMPLETED | 0 | 0 | 0 | 0 |
Baseline Characteristics
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) | Total |
|---|---|---|---|---|---|
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Avatrombopag (40 mg), Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. | Total of all reporting groups |
| Overall Participants | 11 | 7 | 11 | 10 | 39 |
| Age (years) [Mean (Standard Deviation) ] | |||||
| Mean (Standard Deviation) [years] |
71.1
(8.49)
|
64.6
(8.42)
|
64.6
(9.59)
|
62.1
(7.32)
|
65.8
(8.92)
|
| Sex: Female, Male (Count of Participants) | |||||
| Female |
4
36.4%
|
1
14.3%
|
5
45.5%
|
3
30%
|
13
33.3%
|
| Male |
7
63.6%
|
6
85.7%
|
6
54.5%
|
7
70%
|
26
66.7%
|
Outcome Measures
| Title | Percentage of Participants With Platelet Count Greater Than or Equal to 50 x 10^9/L and at Least 20 x 10^9/L Increase From Baseline at Visit 4 |
|---|---|
| Description | Responders were defined as participants whose platelet count was greater than or equal to 50×10^9/liter (L) and change from baseline was at least 20×10^9/L at Visit 4. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. Two-sided 95% confidence interval (CI) is calculated by Clopper and Pearson method. |
| Time Frame | Baseline and Visit 4 (Day 10) |
Outcome Measure Data
| Analysis Population Description |
|---|
| Full Analysis Set (FAS) included all randomized participants who received at least one dose of study drug. |
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) |
|---|---|---|---|---|
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. |
| Measure Participants | 11 | 7 | 11 | 10 |
| Number (95% Confidence Interval) [Percentage of participants] |
9.1
82.7%
|
28.6
408.6%
|
63.6
578.2%
|
40.0
400%
|
Statistical Analysis 1
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | ||
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.146 |
| Comments | ||
| Method | Shirley-Williams test | |
| Comments | P-value is based on Shirley-Williams test at a one-sided significance level of α = 0.025. | |
| Method of Estimation | Estimation Parameter | Difference of responder rate vs. placebo |
| Estimated Value | 19.5 | |
| Confidence Interval |
(2-Sided) 95% -18.1 to 57.0 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of responder rate vs. placebo = responder rate for avatrombopag - responder rate for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 2
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | ||
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.004 |
| Comments | ||
| Method | Shirley-Williams test | |
| Comments | P-value is based on Shirley-Williams test at a one-sided significance level of α = 0.025. | |
| Method of Estimation | Estimation Parameter | Difference of responder rate vs. placebo |
| Estimated Value | 54.5 | |
| Confidence Interval |
(2-Sided) 95% 21.4 to 87.7 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of responder rate vs. placebo = responder rate for avatrombopag - responder rate for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 3
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | ||
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.024 |
| Comments | ||
| Method | Shirley-Williams test | |
| Comments | P-value is based on Shirley-Williams test at a one-sided significance level of α = 0.025. | |
| Method of Estimation | Estimation Parameter | Difference of responder rate vs. placebo |
| Estimated Value | 30.9 | |
| Confidence Interval |
(2-Sided) 95% -3.9 to 65.7 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of responder rate vs. placebo = responder rate for avatrombopag - responder rate for placebo; 95% CI is calculated based on normal approximation. | |
| Title | Percentage of Participants With Platelet Count Greater Than or Equal to 50 x 10^9/L at Each Visit |
|---|---|
| Description | Responders were defined as the participants whose platelet count greater than or equal to 50 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. Two-sided 95% CI is calculated by Clopper and Pearson method. |
| Time Frame | Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35) |
Outcome Measure Data
| Analysis Population Description |
|---|
| FAS |
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) |
|---|---|---|---|---|
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. |
| Measure Participants | 11 | 7 | 11 | 10 |
| Visit 3 (Day 4 or Day 5) |
0.0
0%
|
14.3
204.3%
|
27.3
248.2%
|
0.0
0%
|
| Visit 4 (Day 10) |
9.1
82.7%
|
71.4
1020%
|
81.8
743.6%
|
50.0
500%
|
| Visit 5 (Day 17) |
27.3
248.2%
|
0.0
0%
|
54.5
495.5%
|
20.0
200%
|
| Visit 6 (Day 35) |
18.2
165.5%
|
0.0
0%
|
9.1
82.7%
|
0.0
0%
|
Statistical Analysis 1
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 3 (Day 4 or Day 5) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.388 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 14.3 | |
| Confidence Interval |
(2-Sided) 95% -11.6 to 40.2 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 2
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 3 (Day 4 or Day 5) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.214 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 27.3 | |
| Confidence Interval |
(2-Sided) 95% 1.0 to 53.6 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 3
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.012 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 62.3 | |
| Confidence Interval |
(2-Sided) 95% 24.8 to 99.9 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 4
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.001 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 72.7 | |
| Confidence Interval |
(2-Sided) 95% 44.3 to 100.0 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 5
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.063 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 40.9 | |
| Confidence Interval |
(2-Sided) 95% 5.6 to 76.2 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 6
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 5 (Day 17) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.245 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | -27.3 | |
| Confidence Interval |
(2-Sided) 95% -53.6 to -1.0 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 7
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 5 (Day 17) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.386 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 27.3 | |
| Confidence Interval |
(2-Sided) 95% -12.2 to 66.8 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 8
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 5 (Day 17) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 1.000 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | -7.3 | |
| Confidence Interval |
(2-Sided) 95% -43.4 to 28.9 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 9
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 6 (Day 35) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.496 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | -18.2 | |
| Confidence Interval |
(2-Sided) 95% -41.0 to 4.6 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 10
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 6 (Day 35) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 1.000 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | -9.1 | |
| Confidence Interval |
(2-Sided) 95% -37.5 to 19.3 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 11
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 6 (Day 35) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.476 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α = 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | -18.2 | |
| Confidence Interval |
(2-Sided) 95% -41.0 to 4.6 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
| Title | Percentage of Participants With Platelet Count Greater Than or Equal to 75 x 10^9/L at Each Visit |
|---|---|
| Description | Responders were defined as the participants whose platelet count greater than or equal to 75 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. Two-sided 95% CI is calculated by Clopper and Pearson method. |
| Time Frame | Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35) |
Outcome Measure Data
| Analysis Population Description |
|---|
| FAS |
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) |
|---|---|---|---|---|
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. |
| Measure Participants | 11 | 7 | 11 | 10 |
| Visit 3 (Day 4 or Day 5) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Visit 4 (Day 10) |
0.0
0%
|
0.0
0%
|
63.6
578.2%
|
30.0
300%
|
| Visit 5 (Day 17) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
10.0
100%
|
| Visit 6 (Day 35) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
Statistical Analysis 1
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.003 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α= 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 63.6 | |
| Confidence Interval |
(2-Sided) 95% 35.2 to 92.1 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 2
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.090 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α= 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 30.0 | |
| Confidence Interval |
(2-Sided) 95% 1.6 to 58.4 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
Statistical Analysis 3
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 5 (Day 17) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.476 |
| Comments | P-value is based on Fisher's exact test at a two-sided significance level of α= 0.05. | |
| Method | Fisher Exact | |
| Comments | ||
| Method of Estimation | Estimation Parameter | Difference of proportion vs. placebo |
| Estimated Value | 10.0 | |
| Confidence Interval |
(2-Sided) 95% -8.6 to 28.6 |
|
| Parameter Dispersion |
Type: Value: |
|
| Estimation Comments | Difference of proportion vs. placebo = proportion of responders for avatrombopag - proportion of responders for placebo; 95% CI is calculated based on normal approximation. | |
| Title | Percentage of Participants With Platelet Count Greater Than or Equal to 150 x 10^9/L At Each Visit |
|---|---|
| Description | Responders were defined as the participants whose platelet count greater than or equal to 150 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. |
| Time Frame | Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35) |
Outcome Measure Data
| Analysis Population Description |
|---|
| FAS |
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) |
|---|---|---|---|---|
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. |
| Measure Participants | 11 | 7 | 11 | 10 |
| Visit 3 (Day 4 or Day 5) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Visit 4 (Day 10) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Visit 5 (Day 17) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Visit 6 (Day 35) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Title | Percentage of Participants With Platelet Count Greater Than or Equal to 200 x 10^9/L At Each Visit |
|---|---|
| Description | Responders were defined as the participants whose platelet count greater than or equal to 200 x 10^9/L by visit. Participants receiving a platelet transfusion prior to the platelet count assessment at Visit 4 were considered as non-responders in the analysis. |
| Time Frame | Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35) |
Outcome Measure Data
| Analysis Population Description |
|---|
| FAS |
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) |
|---|---|---|---|---|
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. |
| Measure Participants | 11 | 7 | 11 | 10 |
| Visit 3 (Day 4 or Day 5) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Visit 4 (Day 10) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Visit 5 (Day 17) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Visit 6 (Day 35) |
0.0
0%
|
0.0
0%
|
0.0
0%
|
0.0
0%
|
| Title | Platelet Count and Change From Baseline in Platelet Count by Visit |
|---|---|
| Description | |
| Time Frame | Baseline, Visit 3 (Day 4 or 5), Visit 4 (Day 10), Visit 5 (Day 17) and Visit 6 (Day 35) |
Outcome Measure Data
| Analysis Population Description |
|---|
| FAS |
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) |
|---|---|---|---|---|
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. |
| Measure Participants | 11 | 7 | 11 | 10 |
| Visit 2 (Baseline) Platelet count |
40.59
(7.024)
|
40.57
(5.556)
|
41.23
(5.159)
|
28.85
(7.568)
|
| Visit 3 (Day 4 or Day 5) Platelet count |
41.27
(8.344)
|
44.71
(6.102)
|
46.09
(8.860)
|
32.70
(9.967)
|
| Visit 3 (Day 4 or Day 5) Change from baseline |
0.68
(2.848)
|
4.14
(7.099)
|
4.86
(6.569)
|
3.85
(6.223)
|
| Visit 4 (Day 10) Platelet count |
43.91
(10.568)
|
53.29
(5.678)
|
79.36
(24.800)
|
55.90
(22.507)
|
| Visit 4 (Day 10) Change from baseline |
3.32
(7.163)
|
12.71
(9.486)
|
38.14
(22.781)
|
27.05
(22.700)
|
| Visit 5 (Day 17) Platelet count |
40.10
(9.916)
|
41.33
(4.803)
|
55.73
(14.826)
|
41.80
(16.578)
|
| Visit 5 (Day 17) Change from baseline |
0.40
(5.243)
|
1.75
(3.402)
|
14.50
(11.874)
|
12.95
(12.857)
|
| Visit 6 (Day 35) Platelet count |
41.50
(10.845)
|
39.67
(5.574)
|
41.36
(8.262)
|
31.44
(8.353)
|
| Visit 6 (Day 35) Change from baseline |
1.80
(4.614)
|
0.08
(1.686)
|
0.14
(8.382)
|
2.33
(4.265)
|
Statistical Analysis 1
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 3 (Day 4 or Day 5) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.296 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 2
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 3 (Day 4 or Day 5) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.070 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 3
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 3 (Day 4 or Day 5) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.138 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 4
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.012 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 5
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.001 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 6
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 4 (Day 10) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.001 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 7
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 5 (Day 17) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.624 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 8
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 5 (Day 17) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.009 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 9
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 5 (Day 17) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.010 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 10
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (20 mg) |
|---|---|---|
| Comments | Visit 6 (Day 35) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.154 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 11
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (40 mg) |
|---|---|---|
| Comments | Visit 6 (Day 35) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.216 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
Statistical Analysis 12
| Statistical Analysis Overview | Comparison Group Selection | Placebo (60 mg), Avatrombopag (60 mg) |
|---|---|---|
| Comments | Visit 6 (Day 35) | |
| Type of Statistical Test | Other | |
| Comments | ||
| Statistical Test of Hypothesis | p-Value | 0.901 |
| Comments | P-value is based on Wilcoxon rank sum test at a two-sided significance level of α = 0.05 for each avatrombopag treatment group vs. placebo. | |
| Method | Wilcoxon (Mann-Whitney) | |
| Comments | ||
| Title | Number of Participants With Adverse Events (AEs) and Serious Adverse Events (SAEs) |
|---|---|
| Description | Safety assessments consisted of monitoring and recording all AEs and SAEs, regular monitoring of hematology, blood chemistry, and urine values; periodic measurement of vital signs and electrocardiograms; physical examinations; and Doppler sonography. AE severity was graded using Common Terminology Criteria for Adverse Events (CTCAE) version 4.0, where Grade 1 = mild, Grade 2 = moderate, Grade 3 = Severe, Grade 4 = Life-threatening, and Grade 5 = Death related to the AE. All AEs graded as 4 or 5 were considered to be serious. A treatment-emergent adverse event (TEAE) was defined as an AE that started on or after the date of first dose of study drug, up to 30 days after the last dose of study drug. For each category, a participant with two or more adverse events in that category was counted only once. Treatment-related TEAEs were considered by the investigator to be possibly or probably related to study drug or TEAEs with a missing causality. |
| Time Frame | From the date of first dose of study drug up to 30 days after the last dose of the study drug, up to approximately 10 months |
Outcome Measure Data
| Analysis Population Description |
|---|
| Safety Analysis Set included all participants who received at least one dose of study drug and had at least one safety assessment. |
| Arm/Group Title | Placebo | Avatrombopag 20-mg | Avatrombopag 40-mg | Avatrombopag 60-mg |
|---|---|---|---|---|
| Arm/Group Description | Placebo (3 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 20 mg avatrombopag (1 x 20 mg tablet and 2 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 40 mg avatrombopag (2 x 20 mg tablets and 1 x 20 mg matching placebo tablet) received after a meal once daily for 5 days | 60 mg avatrombopag (3 x 20 mg tablets) received after a meal once daily for 5 days |
| Measure Participants | 11 | 7 | 11 | 10 |
| All TEAEs |
8
72.7%
|
4
57.1%
|
8
72.7%
|
3
30%
|
| Treatment-related TEAEs |
0
0%
|
2
28.6%
|
2
18.2%
|
0
0%
|
| Serious TEAEs |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| TEAEs leading to study drug dose adjustment |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| TEAEs leading to study drug withdrawal |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| TEAEs leading to study drug dose reduction |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| TEAEs leading to study drug dose interruption |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| Title | Number of Participants With Treatment-emergent Markedly Abnormal Laboratory Value (TEMAV) for Haematology |
|---|---|
| Description | |
| Time Frame | From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months) |
Outcome Measure Data
| Analysis Population Description |
|---|
| The safety analysis set was the group of participants who received at least 1 dose of study drug and had at least 1 postdose safety assessment. |
| Arm/Group Title | Placebo | Avatrombopag 20-mg | Avatrombopag 40-mg | Avatrombopag 60-mg |
|---|---|---|---|---|
| Arm/Group Description | Placebo (3 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 20 mg avatrombopag (1 x 20 mg tablet and 2 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 40 mg avatrombopag (2 x 20 mg tablets and 1 x 20 mg matching placebo tablet) received after a meal once daily for 5 days | 60 mg avatrombopag (3 x 20 mg tablets) received after a meal once daily for 5 days |
| Measure Participants | 11 | 7 | 11 | 10 |
| Hemoglobin |
1
9.1%
|
0
0%
|
0
0%
|
1
10%
|
| Leukocytes |
4
36.4%
|
4
57.1%
|
2
18.2%
|
0
0%
|
| Alkaline phosphatase (ALP) |
1
9.1%
|
0
0%
|
0
0%
|
0
0%
|
| Alanine aminotransferase (ALT) |
0
0%
|
0
0%
|
0
0%
|
1
10%
|
| Bilirubin |
1
9.1%
|
1
14.3%
|
2
18.2%
|
2
20%
|
| Gamma-glutamyl transferase (γ-GTP) |
0
0%
|
0
0%
|
0
0%
|
1
10%
|
| Calcium |
0
0%
|
0
0%
|
0
0%
|
2
20%
|
| Albumin |
1
9.1%
|
1
14.3%
|
1
9.1%
|
0
0%
|
| Glucose |
3
27.3%
|
2
28.6%
|
2
18.2%
|
1
10%
|
| Triglycerides |
9
81.8%
|
0
0%
|
1
9.1%
|
0
0%
|
| Aspartate aminotransferase (AST) |
0
0%
|
1
14.3%
|
0
0%
|
1
10%
|
| Title | Number of Participants With Clinically Significant Findings in Laboratory Values for Serum |
|---|---|
| Description | |
| Time Frame | From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months) |
Outcome Measure Data
| Analysis Population Description |
|---|
| The safety analysis set was the group of participants who received at least 1 dose of study drug and had at least 1 postdose safety assessment. |
| Arm/Group Title | Placebo | Avatrombopag 20-mg | Avatrombopag 40-mg | Avatrombopag 60-mg |
|---|---|---|---|---|
| Arm/Group Description | Placebo (3 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 20 mg avatrombopag (1 x 20 mg tablet and 2 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 40 mg avatrombopag (2 x 20 mg tablets and 1 x 20 mg matching placebo tablet) received after a meal once daily for 5 days | 60 mg avatrombopag (3 x 20 mg tablets) received after a meal once daily for 5 days |
| Measure Participants | 11 | 7 | 11 | 10 |
| Count of Participants [Participants] |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| Title | Number of Participants With Clinically Significant Findings in Laboratory Values for Urinalysis |
|---|---|
| Description | |
| Time Frame | From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months) |
Outcome Measure Data
| Analysis Population Description |
|---|
| The safety analysis set was the group of participants who received at least 1 dose of study drug and had at least 1 postdose safety assessment. |
| Arm/Group Title | Placebo | Avatrombopag 20-mg | Avatrombopag 40-mg | Avatrombopag 60-mg |
|---|---|---|---|---|
| Arm/Group Description | Placebo (3 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 20 mg avatrombopag (1 x 20 mg tablet and 2 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 40 mg avatrombopag (2 x 20 mg tablets and 1 x 20 mg matching placebo tablet) received after a meal once daily for 5 days | 60 mg avatrombopag (3 x 20 mg tablets) received after a meal once daily for 5 days |
| Measure Participants | 11 | 7 | 11 | 10 |
| Count of Participants [Participants] |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| Title | Number of Participants With Clinically Significant Change From Baseline in Vital Sign Values |
|---|---|
| Description | |
| Time Frame | From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months) |
Outcome Measure Data
| Analysis Population Description |
|---|
| The safety analysis set was the group of participants who received at least 1 dose of study drug and had at least 1 postdose safety assessment. |
| Arm/Group Title | Placebo | Avatrombopag 20-mg | Avatrombopag 40-mg | Avatrombopag 60-mg |
|---|---|---|---|---|
| Arm/Group Description | Placebo (3 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 20 mg avatrombopag (1 x 20 mg tablet and 2 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 40 mg avatrombopag (2 x 20 mg tablets and 1 x 20 mg matching placebo tablet) received after a meal once daily for 5 days | 60 mg avatrombopag (3 x 20 mg tablets) received after a meal once daily for 5 days |
| Measure Participants | 11 | 7 | 11 | 10 |
| Count of Participants [Participants] |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
| Title | Number of Participants With Markedly Abnormal Electrocardiographs |
|---|---|
| Description | |
| Time Frame | From the date of Screening until the date of last dose of study drug plus 30 days (Approximately 10 months) |
Outcome Measure Data
| Analysis Population Description |
|---|
| The safety analysis set was the group of participants who received at least 1 dose of study drug and had at least 1 postdose safety assessment. |
| Arm/Group Title | Placebo | Avatrombopag 20-mg | Avatrombopag 40-mg | Avatrombopag 60-mg |
|---|---|---|---|---|
| Arm/Group Description | Placebo (3 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 20 mg avatrombopag (1 x 20 mg tablet and 2 x 20 mg matching placebo tablets) received after a meal once daily for 5 days | 40 mg avatrombopag (2 x 20 mg tablets and 1 x 20 mg matching placebo tablet) received after a meal once daily for 5 days | 60 mg avatrombopag (3 x 20 mg tablets) received after a meal once daily for 5 days |
| Measure Participants | 11 | 7 | 11 | 10 |
| Count of Participants [Participants] |
0
0%
|
0
0%
|
0
0%
|
0
0%
|
Adverse Events
| Time Frame | From the date of first dose of study drug up to 30 days after the last dose of the study drug, up to approximately 10 months. | |||||||
|---|---|---|---|---|---|---|---|---|
| Adverse Event Reporting Description | Treatment-emergent adverse events and serious adverse events are reported. All adverse events were graded on a 5-point scale according to Common Terminology Criteria for Adverse Events (CTCAE) version 4.0. The safety analysis set was analyzed and included all participants who received at least one dose of study drug and had at least one post dose safety assessment. This set was analyzed "as treated." | |||||||
| Arm/Group Title | Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) | ||||
| Arm/Group Description | Participants took 60 mg placebo (3 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 20 mg avatrombopag (1 x 20 mg avatrombopag tablet and 2 x 20 mg matching placebo tablets) orally after a meal, once daily for 5 days. | Participants took 40 mg avatrombopag (2 x 20 mg avatrombopag tablets and 1 x 20 mg matching placebo tablet) orally after a meal, once daily for 5 days. | Participants took 60 mg avatrombopag (3 x 20 mg avatrombopag tablets) orally, after a meal, once daily for 5 days. | ||||
All Cause Mortality |
||||||||
| Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) | |||||
| Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
| Total | 0/11 (0%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
Serious Adverse Events |
||||||||
| Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) | |||||
| Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
| Total | 0/11 (0%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
Other (Not Including Serious) Adverse Events |
||||||||
| Placebo (60 mg) | Avatrombopag (20 mg) | Avatrombopag (40 mg) | Avatrombopag (60 mg) | |||||
| Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | Affected / at Risk (%) | # Events | |
| Total | 8/11 (72.7%) | 4/7 (57.1%) | 8/11 (72.7%) | 3/10 (30%) | ||||
| Eye disorders | ||||||||
| Conjunctival Haemorrhage | 0/11 (0%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Gastrointestinal disorders | ||||||||
| Abdominal Discomfort | 1/11 (9.1%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Ascites | 1/11 (9.1%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
| Constipation | 0/11 (0%) | 0/7 (0%) | 2/11 (18.2%) | 0/10 (0%) | ||||
| Diarrhoea | 1/11 (9.1%) | 1/7 (14.3%) | 0/11 (0%) | 1/10 (10%) | ||||
| Haematochezia | 1/11 (9.1%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
| Nausea | 0/11 (0%) | 0/7 (0%) | 0/11 (0%) | 1/10 (10%) | ||||
| General disorders | ||||||||
| Injection Site Reaction | 0/11 (0%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Puncture Site Pain | 0/11 (0%) | 0/7 (0%) | 0/11 (0%) | 1/10 (10%) | ||||
| Thirst | 0/11 (0%) | 0/7 (0%) | 1/11 (9.1%) | 0/10 (0%) | ||||
| Vessel Puncture Site Haematoma | 0/11 (0%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Infections and infestations | ||||||||
| Acute Sinusitis | 0/11 (0%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Gastroenteritis | 0/11 (0%) | 0/7 (0%) | 1/11 (9.1%) | 0/10 (0%) | ||||
| Nasopharyngitis | 0/11 (0%) | 0/7 (0%) | 1/11 (9.1%) | 1/10 (10%) | ||||
| Injury, poisoning and procedural complications | ||||||||
| Post Embolisation Syndrome | 0/11 (0%) | 0/7 (0%) | 2/11 (18.2%) | 1/10 (10%) | ||||
| Post Procedural Complication | 1/11 (9.1%) | 2/7 (28.6%) | 2/11 (18.2%) | 0/10 (0%) | ||||
| Investigations | ||||||||
| Alanine Aminotransferase Increased | 0/11 (0%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Aspartate Aminotransferase Increased | 0/11 (0%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Blood Glucose Increased | 1/11 (9.1%) | 1/7 (14.3%) | 1/11 (9.1%) | 0/10 (0%) | ||||
| Blood pressure increased | 0/11 (0%) | 0/7 (0%) | 0/11 (0%) | 1/10 (10%) | ||||
| White Blood Cell Count Decreased | 0/11 (0%) | 1/7 (14.3%) | 0/11 (0%) | 0/10 (0%) | ||||
| Musculoskeletal and connective tissue disorders | ||||||||
| Musculoskeletal Chest Pain | 1/11 (9.1%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
| Myalgia | 1/11 (9.1%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
| Neck Pain | 1/11 (9.1%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
| Nervous system disorders | ||||||||
| Headache | 0/11 (0%) | 0/7 (0%) | 0/11 (0%) | 1/10 (10%) | ||||
| Psychiatric disorders | ||||||||
| Insomnia | 1/11 (9.1%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
| Respiratory, thoracic and mediastinal disorders | ||||||||
| Epistaxis | 1/11 (9.1%) | 0/7 (0%) | 0/11 (0%) | 0/10 (0%) | ||||
| Skin and subcutaneous tissue disorders | ||||||||
| Blister | 0/11 (0%) | 0/7 (0%) | 1/11 (9.1%) | 0/10 (0%) | ||||
| Eczema Asteatotic | 0/11 (0%) | 0/7 (0%) | 1/11 (9.1%) | 0/10 (0%) | ||||
| Erythema | 0/11 (0%) | 0/7 (0%) | 1/11 (9.1%) | 0/10 (0%) | ||||
| Haemorrhage Subcutaneous | 1/11 (9.1%) | 1/7 (14.3%) | 1/11 (9.1%) | 0/10 (0%) | ||||
| Rosacea | 0/11 (0%) | 0/7 (0%) | 1/11 (9.1%) | 0/10 (0%) | ||||
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 | Eisai Medical Services |
|---|---|
| Organization | Eisai Inc. |
| Phone | 1-888-274-2378 |
| esi_medinfo@eisai.com |
Responsible Party:
Eisai Co., Ltd.
ClinicalTrials.gov Identifier:
NCT02227693
Other Study ID Numbers:
- E5501-J081-204
First Posted:
Aug 28, 2014
Last Update Posted:
Feb 28, 2019
Last Verified:
Dec 1, 2017