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Clinical Trial Summary

This phase I trial studies the side effects and best dose of ipilimumab when given together with decitabine in treating patients with myelodysplastic syndrome or acute myeloid leukemia that has returned after a period of improvement (relapsed) or does not respond to treatment (refractory). Immunotherapy with monoclonal antibodies, such as ipilimumab, may help the body's immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. Drugs used in chemotherapy, such as decitabine, work in different ways to stop the growth of cancer cells, either by killing the cells, by stopping them from dividing, or by stopping them from spreading. Giving ipilimumab and decitabine may work better in treating patients with relapsed or refractory myelodysplastic syndrome or acute myeloid leukemia.


Clinical Trial Description

PRIMARY OBJECTIVES: I. To determine the maximum tolerated dose (MTD) or recommended phase 2 dose (RP2D) of combination decitabine and ipilimumab for relapsed or refractory myelodysplastic syndrome (MDS) or relapsed or refractory acute myeloid leukemia (AML) in patients who are post allogeneic hematopoietic stem cell transplant (allo-HCT). II. To determine the MTD or RP2D of combination decitabine and ipilimumab for relapsed or refractory MDS or relapsed or refractory AML in patients who are transplant naive. SECONDARY OBJECTIVES: I. To observe and record anti-tumor activity. II. To determine the overall response rate (ORR) including complete remission (CR) and complete remission with incomplete count recovery (CRi) for AML following 2003 International Working Group (IWG) response criteria. III. To determine the ORR including CR, partial remission, marrow CR, hematologic improvement for MDS using 2006 IWG criteria. IV. To determine the overall survival and progression free survival at 1 year. V. To determine the duration of remission. VI. To capture the incidence and severity of acute graft-versus-host disease (GVHD) in the post allo-HCT cohort. VII. To capture the incidence and severity of chronic graft-versus-host disease (GVHD) in the post allo-HCT cohort. EXPLORATORY OBJECTIVES: I. To measure the absolute lymphocyte count (ALC) prior to treatment and during treatment. II. To evaluate the genome for evidence of clonal evolution among longitudinal samples (prior to treatment, during treatment, and at relapse if relevant) from individual patients. III. To evaluate the histopathologic findings of immune response using immunohistochemistry. IV. To determine the immune response in the AML tumor microenvironment by using flow cytometry and single cell mass cytometry to evaluate T cell subsets. OUTLINE: This is a dose-escalation study of ipilimumab. ARM A (PATIENTS POST ALLO-HCT): PRIMING PHASE: Patients receive decitabine intravenously (IV) over 60 minutes on days 1-5 out of 28 days. INDUCTION PHASE: Patients receive decitabine IV over 60 minutes on days 1-5 and ipilimumab IV over 90 minutes on day 1. Treatment repeats every 28 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. MAINTENANCE PHASE: Patients receive decitabine IV over 60 minutes on days 1-5 and ipilimumab IV over 90 minutes on day 1. Treatment repeats every 4 or 8 weeks for up to 4 cycles in the absence of disease progression or unacceptable toxicity. ARM B (TRANSPLANT NAIVE PATIENTS): PRIMING PHASE: Patients receive decitabine IV over 60 minutes on days 1-5 out of 28 days. INDUCTION PHASE: Patients receive decitabine IV over 60 minutes on days 1-5 and ipilimumab IV over 90 minutes on day 1. Treatment repeats every 28 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. MAINTENANCE PHASE: Patients receive decitabine IV over 60 minutes on days 1-5 and ipilimumab IV over 90 minutes on day 1. Treatment repeats every 4 or 8 weeks for up to 4 cycles in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up every 3 months for up to 52 weeks (1 year). ;


Study Design


Related Conditions & MeSH terms


NCT number NCT02890329
Study type Interventional
Source National Cancer Institute (NCI)
Contact
Status Active, not recruiting
Phase Phase 1
Start date September 5, 2017
Completion date July 1, 2024

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