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Entinostat And Imatinib Mesylate In Treating Patients With Relapsed or Refractory Philadelphia Chromosome-Positive Acute Lymphoblastic Leukemia

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01383447
Recruitment Status : Terminated (This study was halted prematurely by the NCI for low accrual.)
First Posted : June 28, 2011
Results First Posted : August 8, 2017
Last Update Posted : August 8, 2017
Information provided by (Responsible Party):
National Cancer Institute (NCI)

Brief Summary:
This phase I/II trial is studying the side effects and best dose of entinostat when given together with imatinib mesylate and to see how well it works in treating patients with relapsed or refractory Philadelphia chromosome-positive acute lymphoblastic leukemia. Entinostat and imatinib mesylate may stop the growth of cancer cells by blocking some of the enzymes needed for cell growth

Condition or disease Intervention/treatment Phase
Philadelphia Chromosome Positive Adult Precursor Acute Lymphoblastic Leukemia Recurrent Adult Acute Lymphoblastic Leukemia Drug: entinostat Drug: imatinib mesylate Other: laboratory biomarker analysis Other: pharmacological study Genetic: western blotting Other: immunohistochemistry staining method Other: flow cytometry Genetic: polymerase chain reaction Other: high performance liquid chromatography Other: mass spectrometry Phase 1 Phase 2

Detailed Description:


I. To determine the maximum tolerated dose (MTD) of entinostat when given in combination with imatinib (matinib mesylate).


I. To estimate the rate of complete response (CR) for patients greater ≥ 18 years of age with relapsed/refractory Ph+ ALL treated with a combination of entinostat and imatinib.

II. To estimate the 1 year progression free survival (PFS) for patients greater ≥ 18 years of age with relapsed/refractory Ph+ ALL treated with a combination of entinostat and imatinib III. To describe the comparative pharmacokinetics (PK) and pharmacodynamics (PD) of entinostat when administered alone vs. in combination with imatinib.

IV. To assess the predictive value of levels of flow cytometric minimal residual disease (MRD) on duration of progression free survival for the study population.

OUTLINE: This is a phase I, dose-escalation study of entinostat followed by a phase II study.

Patients receive entinostat orally (PO) daily on days 1, 8, 15, and 22 and imatinib mesylate PO twice daily on days 1-28 (days 4-28 of course 1). Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up for 30 days.

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 2 participants
Intervention Model: Single Group Assignment
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: A Phase 1/2 Study of SNDX-275 in Combination With Imatinib for Relapsed/Refractory Philadelphia Chromosome Positive Acute Lymphoblastic Leukemia
Study Start Date : October 2010
Actual Primary Completion Date : April 2012
Actual Study Completion Date : April 2012

Arm Intervention/treatment
Experimental: Treatment (entinostat and imatinib mesylate)
Patients receive entinostat PO daily on days 1, 8, 15, and 22 and imatinib mesylate PO twice daily on days 1-28 (days 4-28 of course 1). Courses repeat every 28 days in the absence of disease progression or unacceptable toxicity.
Drug: entinostat
Given PO
Other Names:
  • HDAC inhibitor SNDX-275
  • SNDX-275

Drug: imatinib mesylate
Given PO
Other Names:
  • CGP 57148
  • Gleevec
  • Glivec

Other: laboratory biomarker analysis
Correlative studies

Other: pharmacological study
Correlative studies
Other Name: pharmacological studies

Genetic: western blotting
Correlative studies
Other Names:
  • Blotting, Western
  • Western Blot

Other: immunohistochemistry staining method
Correlative studies
Other Name: immunohistochemistry

Other: flow cytometry
Correlative studies

Genetic: polymerase chain reaction
Correlative studies
Other Name: PCR

Other: high performance liquid chromatography
Correlative studies
Other Name: HPLC

Other: mass spectrometry
Correlative studies

Primary Outcome Measures :
  1. Maximum Tolerated Dose (MTD) of Entinostat When Given in Combination With Imatinib Mesylate [ Time Frame: Up to 30 days post-treatment ]
    The descriptions and grading scales found in the revised NCI Common Terminology Criteria for Adverse Events (CTCAE) version 4.0 will be utilized for AE reporting.

Secondary Outcome Measures :
  1. Rate of Complete Response (CR) for Adults With Relapsed/Refractory Ph+ ALL Treated With a Combination of Entinostat (at the Dose Determined in Phase 1) and Imatinib Mesylate [ Time Frame: Up to 30 days post-treatment ]
  2. Progression Free Survival (PFS) for Adults With Relapsed/Refractory Ph+ ALL Treated With Combination of Entinostat and Imatinib Mesylate [ Time Frame: At 1 year ]
    The Kaplan-Meier estimator will be used to estimate PFS with a 95% confidence interval from study entry.

  3. Comparative Pharmacokinetics (PK) and Pharmacodynamics (PD) of Entinostat Alone vs. Entinostat Plus Imatinib Mesylate [ Time Frame: Day 4 and 11 ]
    Entinostat concentrations will be compared when administered alone or in combination with imatinib by paired Student's t test (day 4 vs 11 concentrations) or Wilcoxon signed rank tests as appropriate. Association between exposure parameters and PD endpoints (e.g., apoptosis, histone acetylation, BCR-ABL expression) will be assessed using Fisher's exact tests or Wilcoxon rank sum tests as appropriate.

  4. Predictive Values of Levels of Flow Cytometric Minimal Residual Disease (MRD) on Duration of Progression Free Survival for the Study Population [ Time Frame: Day 29 ]
    Kaplan-Meier PFS curves and cumulative incidence of progression curves will be generated for patients above vs. below each threshold, and log rank will be used to compare the curves.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients must have histologically confirmed BCR-ABL1 associated (Ph+) acute lymphoblastic leukemia (ALL) with primary refractory or relapsed disease; demonstration of BCR-ABL1 in leukemia cells by one or more of the following is required: t(9;22)(q34;q11.2) cytogenetics; FISH for BCR-ABL1 fusion; RT-PCR for BCR-ABL1 fusion
  • Prior treatment with tyrosine kinase inhibitors (including imatinib, nilotinib and/or dasatinib) is allowed, although patients must be off any tyrosine kinase inhibitor for a minimum of 72 hours prior to beginning protocol therapy
  • ECOG performance status of 0, 1 or 2
  • Total WBC =< 150,000 with no evidence for ongoing or impending leukostasis
  • Total bilirubin =< 2.0 mg/dL unless elevated due to Gilbert's, hemolysis or leukemic infiltration
  • Aspartate transaminase (AST)/alanine transaminase (ALT) =< 2.5 × upper limit of normal (ULN) unless due to leukemic infiltration
  • Serum creatinine =< 2.0 mg/dL or creatinine clearance > 50 ml/min
  • Left ventricular ejection fraction (LVEF) >= 45% as measured by echocardiogram (ECHO) or MUGA
  • Patients who have undergone stem cell transplantation (SCT), autologous or allogeneic, are eligible provided that they are > 4 weeks from stem cell infusion, have no active GVHD, and meet other eligibility criteria
  • Patients who fail primary induction therapy or relapse after achieving complete remission (CR) are eligible if they are > 3 weeks off cytotoxic chemotherapy and > 2 weeks off radiation therapy; patients must be off biologic therapies including hematopoietic growth factors > 1 week; if using hydroxyurea (HU), steroids, or other non-cytotoxics for blast count control, patient must be off for > 24 hrs before starting protocol therapy; patients must have recovered from all acute toxicities from any previous therapy
  • Female patients of childbearing age must have negative pregnancy test; women of child-bearing potential and men must agree to use adequate contraception (hormonal or barrier method of birth control; abstinence) prior to study entry and for the duration of study participation; should a woman become pregnant or suspect she is pregnant while participating in this study, she should inform her treating physician immediately
  • Ability to understand and the willingness to sign a written informed consent document

Exclusion Criteria:

  • Patients may not be receiving any other investigational agents
  • Active CNS leukemia; patients with known previous CNS leukemia may continue to receive intrathecal therapy with ara-C, methotrexate, and/or thiotepa plus steroids as prophylaxis against reactivation of previous CNS disease
  • Patients may not have received previous treatment with entinostat or other HDAC inhibitors
  • History of allergic reactions attributed to compounds of similar chemical or biologic composition to entinostat or other agents used in study
  • Uncontrolled intercurrent illness including, but not limited to, ongoing or active untreated infection, symptomatic congestive heart failure, unstable angina pectoris, unstable cardiac arrhythmia, or psychiatric illness/social situations that would limit compliance with study requirements
  • Pregnant women are excluded from this study; breastfeeding should be discontinued if the mother is treated with entinostat
  • HIV-positive patients on combination antiretroviral therapy are ineligible

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01383447

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United States, Maryland
Johns Hopkins University
Baltimore, Maryland, United States, 21287-8936
Sponsors and Collaborators
National Cancer Institute (NCI)
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Principal Investigator: Patrick Brown Johns Hopkins University

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Responsible Party: National Cancer Institute (NCI) Identifier: NCT01383447     History of Changes
Other Study ID Numbers: NCI-2010-02202
U01CA070095 ( U.S. NIH Grant/Contract )
First Posted: June 28, 2011    Key Record Dates
Results First Posted: August 8, 2017
Last Update Posted: August 8, 2017
Last Verified: July 2017

Additional relevant MeSH terms:
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Precursor Cell Lymphoblastic Leukemia-Lymphoma
Leukemia, Lymphoid
Philadelphia Chromosome
Neoplasms by Histologic Type
Lymphoproliferative Disorders
Lymphatic Diseases
Immunoproliferative Disorders
Immune System Diseases
Translocation, Genetic
Chromosome Aberrations
Pathologic Processes
Imatinib Mesylate
Antineoplastic Agents
Protein Kinase Inhibitors
Enzyme Inhibitors
Molecular Mechanisms of Pharmacological Action
Histone Deacetylase Inhibitors