ENGAGE-501: A Phase 2 Multi-Center Study of Entinostat (SNDX-275) in Patient With Relapsed or Refractory Hodgkin's Lymphoma

Sponsor
Syndax Pharmaceuticals (Industry)
Overall Status
Terminated
CT.gov ID
NCT00866333
Collaborator
(none)
49
6
1
45.9
8.2
0.2

Study Details

Study Description

Brief Summary

This study will evaluate the efficacy and safety of entinostat, SNDX-275, in patients with relapsed or refractory Hodgkin's lymphoma.

Condition or Disease Intervention/Treatment Phase
Phase 2

Study Design

Study Type:
Interventional
Actual Enrollment :
49 participants
Allocation:
N/A
Intervention Model:
Single Group Assignment
Intervention Model Description:
The Single Group Assignment is one of three regimens based on the protocol version at the time of enrollment.The Single Group Assignment is one of three regimens based on the protocol version at the time of enrollment.
Masking:
None (Open Label)
Primary Purpose:
Treatment
Official Title:
A Phase 2 Multi-Center Study of Entinostat (SNDX-275) in Patients With Relapsed or Refractory Hodgkin's Lymphoma
Study Start Date :
Apr 13, 2009
Actual Primary Completion Date :
Feb 8, 2013
Actual Study Completion Date :
Feb 8, 2013

Arms and Interventions

Arm Intervention/Treatment
Experimental: Entinostat

Regimen determined by protocol version. Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity.

Drug: Entinostat
Entinostat tablets
Other Names:
  • SNDX-275
  • Outcome Measures

    Primary Outcome Measures

    1. Percentage of Participants With Best Overall Response Based on the Participant's Best Response That is Documented Within the First 6 Cycles of Protocol Therapy [Up to 6 months]

      Best Overall Response was defined as Complete Response (CR) or Partial Response (PR). Tumor response was assessed by the Investigators using the International Working Group revised response criteria for malignant lymphoma (Cheson, Pfistner et al. 2007). CR was defined as complete disappearance of all detectable clinical and radiographic evidence of disease and disappearance of all disease-related symptoms if present before therapy, and normalization of those biochemical abnormalities definitely assignable to HL. PR was defined as: At least a 50% decrease in sum of the products of the greatest diameters (SPD) of the six largest dominant nodes or nodal masses, No increase in the size of other nodes, No new sites of disease.

    Secondary Outcome Measures

    1. Percentage of Participants With Best Overall Response Based on the Participant's Best Response Documented Through the Entire Course of Protocol Therapy [Regimen 1 and 2 median follow-up 36.6 months; Regimen 3 median follow-up 18.4 months]

      Best Overall Response was defined as Complete Response (CR) or Partial Response (PR). Tumor response was assessed by the Investigators using the International Working Group revised response criteria for malignant lymphoma (Cheson, Pfistner et al. 2007). CR was defined as complete disappearance of all detectable clinical and radiographic evidence of disease and disappearance of all disease-related symptoms if present before therapy, and normalization of those biochemical abnormalities definitely assignable to HL. PR was defined as: At least a 50% decrease in sum of the products of the greatest diameters (SPD) of the six largest dominant nodes or nodal masses, No increase in the size of other nodes, No new sites of disease.

    2. Duration of Objective Response for Participants Achieving CR or PR [Regimen 1 and 2 median follow-up 36.6 months; Regimen 3 median follow-up 18.4 months]

      Duration of objective response was defined as the number of days from the start date of CR or PR (whichever status is recorded first), until the first date that recurrent or progressive disease was objectively documented.

    3. Number of Participants With Serious Adverse Events (SAE) and Adverse Events (AEs) [First dose to within 30 days of the last dose of study drug (Up to 34 months)]

      An AE is any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. A Treatment-Emergent Adverse Event (TEAE) is an AE that occurred after receive study drug. Any changes from baseline in vital signs, electrocardiogram results, and laboratory parameters assessed by the investigator to be clinically significant were reported as AEs. A SAE is defined as an AE that: is fatal, is life threatening, requires in-patient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity is a congenital anomaly/birth defect, is another significant medical hazard, such as new malignancy.

    Eligibility Criteria

    Criteria

    Ages Eligible for Study:
    18 Years and Older
    Sexes Eligible for Study:
    All
    Accepts Healthy Volunteers:
    No
    Inclusion Criteria:
    1. Pathologic confirmation of relapsed or refractory classical Hodgkin's lymphoma from the last biopsy available. Relapsed disease is defined as progressive disease following systematic therapy(ies) with curative intent. Refractory disease is defined as disease not responding to or having progressed within 3 months of the last dose of most recent systemic therapy.

    2. Must have progressed after, or been ineligible for, stem cell transplantation.

    3. Documented disease that is radiographically measurable (≥ 1.5 cm in the largest transverse dimension). If only 1 site of radiographically measurable lesion with the longest diameter < 2.5 cm, lesion must be positive by Fluorodeoxyglucose Positron Emission Tomography (FDG-PET) or biopsy.

    4. Last dose of cytotoxic chemotherapy must be > 21 days before the first dose of study drug.

    5. European Cooperative Oncology Group (ECOG) performance status of 0 or 1.

    6. Age 18 years or older.

    7. Total Bilirubin ≤ 1.5 x Upper Limit of Normal (ULN) and Aspartate Transaminase (AST) and Alanine Transaminase (ALT) ≤ 2.5 x ULN, possible exceptions if documented Hodgkin Lymphoma (HL) liver involvement.

    8. Serum Creatinine ≤ 1.5 x ULN.

    9. Absolute neutrophil counts of ≥ 1,000/µL, and platelet counts ≥ 50,000/µL

    10. Patients or their legal representative must be able to read, understand, and sign a written informed consent

    Exclusion Criteria:
    1. Patients with another active cancer (excluding basal cell carcinoma or CIN/cervical carcinoma in situ or melanoma in situ). Prior history of other cancer is allowed, excluding active disease within the prior 5 years.

    2. Prior allogeneic stem cell transplantation requiring active immunosuppressive therapy within 3 months of registration or with evidence of active Graft Versus Host Disease (GVHD).

    3. Pregnant or lactating women. Women of child-bearing potential (WOCBP) must have a negative serum pregnancy test prior to start of study drug.

    4. WOCBP and men whose partners are WOCBP must use an acceptable method of contraception while enrolled on this study, and for a period of 3 months following the last dose of study drug.

    5. Patients with uncontrolled intercurrent illness, active or uncontrolled infections, or a fever > 38.5⁰C that has not been evaluated for infection on the day of scheduled dosing.

    6. Patients who have been treated with any investigational drug within 28 days prior to the first dose of study medication, or who are receiving concurrent treatment with other experimental drugs or anti-cancer therapy.

    7. Prior treatment with Histone Deacetylase (HDAC) inhibitors (e.g. valproic acid, Zolinza (SAHA), romidepsin (Istodax),and experimental compounds such as MethylGene's MCGD0103 and Novartis' LBH589).

    8. History of pericarditis or pericardial effusion that had required medical or surgical intervention in the last 6 months, or myocardial infarction or arterial thromboembolic events within 6 months, or experiencing severe or unstable angina, or New York Heart Association (NYHA) Class III or IV disease or a QTc interval >0.47 seconds.

    9. Known human immunodeficiency virus (HIV) or a history of active Hepatitis B or C as evidenced by laboratory abnormalities in addition to positive serology.

    10. Active central nervous system lymphoma and lymphoma with leptomeningeal involvement.

    11. Any condition (e.g., known or suspected poor compliance, psychological instability, geographical location, etc) that, in the judgment of the investigator, may affect the patient's ability to sign the informed consent and comply with study procedures.

    12. Any condition that will put the patient at undue risk or discomfort as a result of adherence to study procedures.

    13. History of gastrointestinal disorders (medical disorder or extensive surgery) that could interfere with absorption of study drug.

    Contacts and Locations

    Locations

    Site City State Country Postal Code
    1 Tower Cancer Research Foundation Beverly Hills California United States
    2 University of Colorado Denver Colorado United States
    3 Johns Hopkins Baltimore Maryland United States
    4 University of Nebraska Medical Center Omaha Nebraska United States
    5 Roswell Park Cancer Institute Buffalo New York United States
    6 MD Anderson Cancer Center Houston Texas United States

    Sponsors and Collaborators

    • Syndax Pharmaceuticals

    Investigators

    None specified.

    Study Documents (Full-Text)

    None provided.

    More Information

    Publications

    None provided.
    Responsible Party:
    Syndax Pharmaceuticals
    ClinicalTrials.gov Identifier:
    NCT00866333
    Other Study ID Numbers:
    • SNDX-275-0501
    First Posted:
    Mar 20, 2009
    Last Update Posted:
    Oct 22, 2019
    Last Verified:
    Oct 1, 2019
    Studies a U.S. FDA-regulated Drug Product:
    Yes
    Studies a U.S. FDA-regulated Device Product:
    No
    Keywords provided by Syndax Pharmaceuticals
    Additional relevant MeSH terms:

    Study Results

    Participant Flow

    Recruitment Details Participants took part in the study at 6 investigative sites in the United States from 13 April 2009 to 8 February 2013.
    Pre-assignment Detail Participants with a diagnosis of Relapsed or Refractory Hodgkin's Lymphoma (HL) were enrolled into one of three entinostat dosing regimens based on the version of the protocol at their time of enrollment in the study.
    Arm/Group Title Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Arm/Group Description Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity.
    Period Title: Overall Study
    STARTED 16 17 16
    COMPLETED 11 10 4
    NOT COMPLETED 5 7 12

    Baseline Characteristics

    Arm/Group Title Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg Total
    Arm/Group Description Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity. Total of all reporting groups
    Overall Participants 16 17 16 49
    Age (years) [Mean (Standard Deviation) ]
    Mean (Standard Deviation) [years]
    32.8
    (10.33)
    37.4
    (13.53)
    34.8
    (10.31)
    35.0
    (11.45)
    Sex: Female, Male (Count of Participants)
    Female
    9
    56.3%
    5
    29.4%
    10
    62.5%
    24
    49%
    Male
    7
    43.8%
    12
    70.6%
    6
    37.5%
    25
    51%
    Race/Ethnicity, Customized (Count of Participants)
    Asian
    1
    6.3%
    0
    0%
    0
    0%
    1
    2%
    Black or African American
    2
    12.5%
    0
    0%
    0
    0%
    2
    4.1%
    White
    10
    62.5%
    17
    100%
    15
    93.8%
    42
    85.7%
    Other
    3
    18.8%
    0
    0%
    1
    6.3%
    4
    8.2%
    Region of Enrollment (participants) [Number]
    United States
    16
    100%
    17
    100%
    16
    100%
    49
    100%

    Outcome Measures

    1. Primary Outcome
    Title Percentage of Participants With Best Overall Response Based on the Participant's Best Response That is Documented Within the First 6 Cycles of Protocol Therapy
    Description Best Overall Response was defined as Complete Response (CR) or Partial Response (PR). Tumor response was assessed by the Investigators using the International Working Group revised response criteria for malignant lymphoma (Cheson, Pfistner et al. 2007). CR was defined as complete disappearance of all detectable clinical and radiographic evidence of disease and disappearance of all disease-related symptoms if present before therapy, and normalization of those biochemical abnormalities definitely assignable to HL. PR was defined as: At least a 50% decrease in sum of the products of the greatest diameters (SPD) of the six largest dominant nodes or nodal masses, No increase in the size of other nodes, No new sites of disease.
    Time Frame Up to 6 months

    Outcome Measure Data

    Analysis Population Description
    Per-Protocol (PP) population included all participants who met all of the following criteria: Completed at least 2 cycles of entinostat therapy and Underwent computed tomography (CT) or positron emission tomography (PET) scans at Screening and Day 1 of Cycle 3.
    Arm/Group Title Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Arm/Group Description Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity.
    Measure Participants 12 17 12
    Number (95% Confidence Interval) [percentage of participants]
    8.3
    51.9%
    11.8
    69.4%
    16.7
    104.4%
    2. Secondary Outcome
    Title Percentage of Participants With Best Overall Response Based on the Participant's Best Response Documented Through the Entire Course of Protocol Therapy
    Description Best Overall Response was defined as Complete Response (CR) or Partial Response (PR). Tumor response was assessed by the Investigators using the International Working Group revised response criteria for malignant lymphoma (Cheson, Pfistner et al. 2007). CR was defined as complete disappearance of all detectable clinical and radiographic evidence of disease and disappearance of all disease-related symptoms if present before therapy, and normalization of those biochemical abnormalities definitely assignable to HL. PR was defined as: At least a 50% decrease in sum of the products of the greatest diameters (SPD) of the six largest dominant nodes or nodal masses, No increase in the size of other nodes, No new sites of disease.
    Time Frame Regimen 1 and 2 median follow-up 36.6 months; Regimen 3 median follow-up 18.4 months

    Outcome Measure Data

    Analysis Population Description
    PP population included all participants who met all of the following criteria: Completed at least 2 cycles of entinostat therapy and Underwent CT or PET scans at Screening and Day 1 of Cycle 3.
    Arm/Group Title Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Arm/Group Description Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity.
    Measure Participants 12 17 12
    Number (95% Confidence Interval) [percentage of participants]
    8.3
    51.9%
    17.6
    103.5%
    16.7
    104.4%
    3. Secondary Outcome
    Title Duration of Objective Response for Participants Achieving CR or PR
    Description Duration of objective response was defined as the number of days from the start date of CR or PR (whichever status is recorded first), until the first date that recurrent or progressive disease was objectively documented.
    Time Frame Regimen 1 and 2 median follow-up 36.6 months; Regimen 3 median follow-up 18.4 months

    Outcome Measure Data

    Analysis Population Description
    PP population included all participants who met all of the following criteria: Completed at least 2 cycles of entinostat therapy and Underwent CT or PET scans at Screening and Day 1 of Cycle 3. Analysis included all participants who achieved CR or PR.
    Arm/Group Title Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Arm/Group Description Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity.
    Measure Participants 1 3 2
    Median (95% Confidence Interval) [months]
    NA
    28.6
    8.3
    4. Secondary Outcome
    Title Number of Participants With Serious Adverse Events (SAE) and Adverse Events (AEs)
    Description An AE is any untoward medical occurrence in a patient or clinical investigation participant administered a pharmaceutical product and which does not necessarily have a causal relationship with this treatment. A Treatment-Emergent Adverse Event (TEAE) is an AE that occurred after receive study drug. Any changes from baseline in vital signs, electrocardiogram results, and laboratory parameters assessed by the investigator to be clinically significant were reported as AEs. A SAE is defined as an AE that: is fatal, is life threatening, requires in-patient hospitalization or prolongation of existing hospitalization, results in persistent or significant disability/incapacity is a congenital anomaly/birth defect, is another significant medical hazard, such as new malignancy.
    Time Frame First dose to within 30 days of the last dose of study drug (Up to 34 months)

    Outcome Measure Data

    Analysis Population Description
    Safety Population included all participants who received at least one dose of study drug.
    Arm/Group Title Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Arm/Group Description Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity.
    Measure Participants 16 17 16
    Any TEAE
    16
    100%
    17
    100%
    16
    100%
    SAE
    2
    12.5%
    7
    41.2%
    3
    18.8%

    Adverse Events

    Time Frame First dose of study drug to within 30 days of last dose (Up to 34 months)
    Adverse Event Reporting Description
    Arm/Group Title Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Arm/Group Description Regimen 1: entinostat 10 mg (two 5 mg tablets) orally, once every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 2: entinostat 10 mg (two 5 mg tablets) orally on Day 1, increased to 15 mg (three 5 mg tablets) beginning on Day 15 of Cycle 1 for participants who had not experienced treatment-related adverse events with severity grade ≥2 (moderate), then continue 15 mg every two weeks (Days 1 and 15) in a 28-day cycle until disease progression or unacceptable toxicity. Regimen 3: entinostat 15 mg (three 5 mg tablets), orally, once weekly for 3 weeks followed by a 1-week break in a 4-week (28-day) cycle until disease progression or unacceptable toxicity.
    All Cause Mortality
    Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Serious Adverse Events
    Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 2/16 (12.5%) 7/17 (41.2%) 3/16 (18.8%)
    Blood and lymphatic system disorders
    Anemia 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Thrombocytopenia 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Febrile neutropenia 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Neutropenia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cardiac disorders
    Cardio-respiratory arrest 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Pericardial effusion 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Pericarditis 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Endocrine disorders
    Hypothyroidism 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    General disorders
    Pyrexia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hepatobiliary disorders
    Cholangitis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Infections and infestations
    Liver abscess 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Sepsis 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Metabolism and nutrition disorders
    Dehydration 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hypercalcaemia 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Hyponatraemia 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Psychiatric disorders
    Panic attack 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Renal and urinary disorders
    Nephrolithiasis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Respiratory, thoracic and mediastinal disorders
    Acute respiratory distress syndrome 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Lung infection pseudomonal 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pulmonary embolism 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Respiratory failure 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Vascular disorders
    Subdural haemorrhage 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Other (Not Including Serious) Adverse Events
    Regimen 1: Entinostat 10 mg Regimen 2: Entinostat 10 mg/15 mg Regimen 3: Entinostat 15 mg
    Affected / at Risk (%) # Events Affected / at Risk (%) # Events Affected / at Risk (%) # Events
    Total 16/16 (100%) 17/17 (100%) 16/16 (100%)
    Blood and lymphatic system disorders
    Thrombocytopenia 10/16 (62.5%) 11/17 (64.7%) 12/16 (75%)
    Anaemia 9/16 (56.3%) 9/17 (52.9%) 10/16 (62.5%)
    Neutropenia 9/16 (56.3%) 6/17 (35.3%) 9/16 (56.3%)
    Leukopenia 2/16 (12.5%) 3/17 (17.6%) 1/16 (6.3%)
    Lymph node pain 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Lymphopenia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cardiac disorders
    Tachycardia 1/16 (6.3%) 3/17 (17.6%) 3/16 (18.8%)
    Pericardial effusion 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Atrial fibrillation 0/16 (0%) 1/17 (5.9%) 1/16 (6.3%)
    Angina pectoris 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Atrial flutter 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cardiac arrest 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cardiac failure chronic 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cardiac failure congestive 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cardiomegaly 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cardiomyopathy 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Pericardial rub 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Sinus bradycardia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Ear and labyrinth disorders
    Ear infection 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Endocrine disorders
    Hypothyroidism 0/16 (0%) 2/17 (11.8%) 1/16 (6.3%)
    Adrenal insufficiency 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hyperparathyroidism 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Eye disorders
    Vision blurred 1/16 (6.3%) 0/17 (0%) 1/16 (6.3%)
    Conjunctivitis 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Dry eye 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Eye irritation 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Photophobia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Gastrointestinal disorders
    Nausea 2/16 (12.5%) 12/17 (70.6%) 7/16 (43.8%)
    Constipation 5/16 (31.3%) 7/17 (41.2%) 3/16 (18.8%)
    Vomiting 3/16 (18.8%) 10/17 (58.8%) 1/16 (6.3%)
    Diarrhoea 1/16 (6.3%) 8/17 (47.1%) 3/16 (18.8%)
    Abdominal pain 1/16 (6.3%) 5/17 (29.4%) 0/16 (0%)
    Dyspepsia 1/16 (6.3%) 3/17 (17.6%) 0/16 (0%)
    Dry mouth 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Dysphagia 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Gastritis 0/16 (0%) 0/17 (0%) 2/16 (12.5%)
    Gastrooesophageal reflux disease 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Abdominal discomfort 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Abdominal distension 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Abdominal pain upper 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Abdominal tenderness 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Anal fissure 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Dysgeusia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Faeces hard 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Flatulence 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Gingival bleeding 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Gingivitis 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Oral candidiasis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Rectal haemorrhage 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Stomach discomfort 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Tongue coated 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Tooth abscess 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    General disorders
    Fatigue 7/16 (43.8%) 7/17 (41.2%) 5/16 (31.3%)
    Pyrexia 3/16 (18.8%) 7/17 (41.2%) 3/16 (18.8%)
    Chills 2/16 (12.5%) 3/17 (17.6%) 3/16 (18.8%)
    Asthenia 1/16 (6.3%) 2/17 (11.8%) 1/16 (6.3%)
    Pain 1/16 (6.3%) 2/17 (11.8%) 0/16 (0%)
    Gait disturbance 1/16 (6.3%) 0/17 (0%) 1/16 (6.3%)
    Catheter thrombosis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Chest discomfort 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Chest pain 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Condition aggravated 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Crepitations 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Early satiety 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Exercise tolerance decreased 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Irritability 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Malaise 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Mucosal dryness 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Mucosal inflammation 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Multi-organ failure 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Oedema 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pitting oedema 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hepatobiliary disorders
    Oedema peripheral 5/16 (31.3%) 7/17 (41.2%) 3/16 (18.8%)
    Bile duct stone 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cholangitis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hepatomegaly 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hyperbilirubinaemia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Jaundice 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Immune system disorders
    Drug hypersensitivity 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hypogammaglobulinaemia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Transfusion reaction 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Infections and infestations
    Sepsis 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Herpes zoster 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Lice infestation 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Localised infection 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Septic shock 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Sinusitis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Injury, poisoning and procedural complications
    Foreign body trauma 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Post procedural haemorrhage 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Investigations
    Blood creatinine increased 1/16 (6.3%) 3/17 (17.6%) 1/16 (6.3%)
    Aspartate aminotransferase increased 2/16 (12.5%) 1/17 (5.9%) 1/16 (6.3%)
    Neutrophil count decreased 0/16 (0%) 2/17 (11.8%) 2/16 (12.5%)
    Platelet count decreased 1/16 (6.3%) 2/17 (11.8%) 1/16 (6.3%)
    Alanine aminotransferase increased 2/16 (12.5%) 1/17 (5.9%) 0/16 (0%)
    Blood alkaline phosphatase increased 1/16 (6.3%) 2/17 (11.8%) 0/16 (0%)
    Blood bilirubin increased 2/16 (12.5%) 0/17 (0%) 0/16 (0%)
    Blood lactate dehydrogenase increased 1/16 (6.3%) 0/17 (0%) 1/16 (6.3%)
    Weight decreased 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Weight increased 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    White blood cell count decreased 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Blood creatinine 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Blood glucose increased 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Electrocardiogram QT prolonged 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Eosinophil percentage increased 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    International normalised ratio decreased 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Monocyte count increased 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Metabolism and nutrition disorders
    Hypokalaemia 3/16 (18.8%) 2/17 (11.8%) 4/16 (25%)
    Hypophosphataemia 1/16 (6.3%) 4/17 (23.5%) 4/16 (25%)
    Anorexia 0/16 (0%) 3/17 (17.6%) 2/16 (12.5%)
    Dehydration 0/16 (0%) 1/17 (5.9%) 3/16 (18.8%)
    Hypoalbuminaemia 2/16 (12.5%) 2/17 (11.8%) 0/16 (0%)
    Decreased appetite 0/16 (0%) 2/17 (11.8%) 1/16 (6.3%)
    Hypercalcaemia 1/16 (6.3%) 1/17 (5.9%) 1/16 (6.3%)
    Hypocalcaemia 0/16 (0%) 2/17 (11.8%) 1/16 (6.3%)
    Hyperglycaemia 0/16 (0%) 1/17 (5.9%) 1/16 (6.3%)
    Hypomagnesaemia 1/16 (6.3%) 0/17 (0%) 1/16 (6.3%)
    Hyponatraemia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Cachexia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hyperphosphataemia 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Hypoglycaemia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Increased appetite 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Musculoskeletal and connective tissue disorders
    Bone pain 1/16 (6.3%) 2/17 (11.8%) 1/16 (6.3%)
    Back pain 0/16 (0%) 1/17 (5.9%) 2/16 (12.5%)
    Muscle spasms 1/16 (6.3%) 2/17 (11.8%) 0/16 (0%)
    Muscular weakness 1/16 (6.3%) 2/17 (11.8%) 0/16 (0%)
    Musculoskeletal chest pain 2/16 (12.5%) 1/17 (5.9%) 0/16 (0%)
    Musculoskeletal pain 0/16 (0%) 2/17 (11.8%) 0/16 (0%)
    Arthralgia 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Flank pain 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Joint stiffness 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Musculoskeletal discomfort 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Myalgia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Neck pain 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pain in extremity 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Pain in jaw 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Nervous system disorders
    Headache 4/16 (25%) 6/17 (35.3%) 4/16 (25%)
    Dizziness 0/16 (0%) 3/17 (17.6%) 0/16 (0%)
    Neuropathy peripheral 1/16 (6.3%) 0/17 (0%) 1/16 (6.3%)
    Aphasia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Critical illness polyneuropathy 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Depressed level of consciousness 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Dysarthria 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Dyskinesia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Facial paresis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Hyperaesthesia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Lethargy 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Paraesthesia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Spinal cord compression 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Tremor 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Breath sounds abnormal 1/16 (6.3%) 0/17 (0%) 1/16 (6.3%)
    Haemoglobin decreased 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Psychiatric disorders
    Insomnia 1/16 (6.3%) 3/17 (17.6%) 1/16 (6.3%)
    Confusional state 0/16 (0%) 1/17 (5.9%) 2/16 (12.5%)
    Anxiety 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Agitation 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Delirium 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Depression 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Mental status changes 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Mood altered 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Renal and urinary disorders
    Urinary tract infection 0/16 (0%) 2/17 (11.8%) 1/16 (6.3%)
    Dysuria 0/16 (0%) 1/17 (5.9%) 1/16 (6.3%)
    Calculus bladder 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Micturition urgency 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pollakiuria 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Proteinuria 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Renal failure 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Urinary incontinence 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Reproductive system and breast disorders
    Benign prostatic hyperplasia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Epididymitis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Scrotal oedema 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Respiratory, thoracic and mediastinal disorders
    Dyspnoea 3/16 (18.8%) 5/17 (29.4%) 4/16 (25%)
    Cough 4/16 (25%) 4/17 (23.5%) 2/16 (12.5%)
    Upper respiratory tract infection 1/16 (6.3%) 6/17 (35.3%) 1/16 (6.3%)
    Epistaxis 2/16 (12.5%) 2/17 (11.8%) 2/16 (12.5%)
    Dyspnoea exertional 1/16 (6.3%) 3/17 (17.6%) 1/16 (6.3%)
    Pneumonia 0/16 (0%) 1/17 (5.9%) 3/16 (18.8%)
    Productive cough 0/16 (0%) 2/17 (11.8%) 2/16 (12.5%)
    Sinusitis 0/16 (0%) 2/17 (11.8%) 2/16 (12.5%)
    Rhinitis 0/16 (0%) 1/17 (5.9%) 2/16 (12.5%)
    Wheezing 0/16 (0%) 2/17 (11.8%) 1/16 (6.3%)
    Nasal congestion 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Nasopharyngitis 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Pharyngolaryngeal pain 1/16 (6.3%) 0/17 (0%) 1/16 (6.3%)
    Pleural effusion 0/16 (0%) 1/17 (5.9%) 1/16 (6.3%)
    Rhinorrhoea 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Sinus congestion 0/16 (0%) 1/17 (5.9%) 1/16 (6.3%)
    Acute respiratory failure 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Acute sinusitis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Haemoptysis 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Hypoxia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Lung infiltration 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Nasal dryness 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Nasal ulcer 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Pharyngitis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pleuritic pain 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pneumocystis jiroveci pneumonia 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pneumonia klebsiella 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Pulmonary alveolar haemorrhage 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Rales 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Respiratory tract congestion 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Sinus headache 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Throat irritation 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Skin and subcutaneous tissue disorders
    Pruritus 2/16 (12.5%) 3/17 (17.6%) 1/16 (6.3%)
    Rash 0/16 (0%) 3/17 (17.6%) 1/16 (6.3%)
    Contusion 1/16 (6.3%) 2/17 (11.8%) 0/16 (0%)
    Hyperhidrosis 0/16 (0%) 2/17 (11.8%) 1/16 (6.3%)
    Dry skin 1/16 (6.3%) 1/17 (5.9%) 0/16 (0%)
    Ecchymosis 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Madarosis 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Night sweats 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Pain of skin 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Rash erythematous 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Skin candida 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Skin discolouration 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Subcutaneous abscess 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Vascular disorders
    Hypotension 1/16 (6.3%) 2/17 (11.8%) 0/16 (0%)
    Deep vein thrombosis 1/16 (6.3%) 0/17 (0%) 0/16 (0%)
    Orthostatic hypotension 0/16 (0%) 1/17 (5.9%) 0/16 (0%)
    Pallor 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Shock 0/16 (0%) 0/17 (0%) 1/16 (6.3%)
    Thrombosis 0/16 (0%) 0/17 (0%) 1/16 (6.3%)

    Limitations/Caveats

    [Not Specified]

    More Information

    Certain Agreements

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

    Publication of the results of the multi-center Study shall not be made before the first multi-site publication by Sponsor or Publications Committee. No Public Presentation by Institution or Investigator will be made until Study Documentation/Results from all sites are received and analyzed by Sponsor. Separate publication by Investigator will be delayed for a period of 18 months until the initial publication by Committee or Sponsor, or a determination is made not to make such publication.

    Results Point of Contact

    Name/Title Michael L. Meyers, MD, PhD, Chief Medical Officer
    Organization Syndax Pharmaceuticals, Inc.
    Phone +1-646-690-7620
    Email mmeyers@syndax.com
    Responsible Party:
    Syndax Pharmaceuticals
    ClinicalTrials.gov Identifier:
    NCT00866333
    Other Study ID Numbers:
    • SNDX-275-0501
    First Posted:
    Mar 20, 2009
    Last Update Posted:
    Oct 22, 2019
    Last Verified:
    Oct 1, 2019