A Phase 2 interventional study of Asparaginase Erwinia chrysanthemi and Biospecimen Collection in Acute Leukemia of Ambiguous Lineage and B Acute Lymphoblastic Leukemia, sponsored by National Cancer Institute (NCI). Recruiting at 117 sites in 2 countries. Open to participants aged Up to 365 Days. Per ClinicalTrials.gov, last updated 2026-10-27.
Sponsored by National Cancer Institute (NCI) · Phase 2, Interventional, and Treatment
This phase II trial tests the addition of venetoclax and/or blinatumomab to usual chemotherapy for treating infants with newly diagnosed acute lymphoblastic leukemia (ALL) with a KMT2A gene rearrangement (KMT2A-rearranged [R]) or without a KMT2A gene rearrangement (KMT2A-germline [G]). Venetoclax is in a class of medications called B-cell lymphoma-2 (Bcl-2) inhibitors. It may stop the growth of cancer cells by blocking Bcl-2, a protein needed for cancer cell survival. Blinatumomab is a monoclonal antibody that may interfere with the ability of cancer cells to grow and spread. Chemotherapy drugs 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. Adding venetoclax and/or blinatumomab to standard chemotherapy may be more effective at treating patients with ALL than standard chemotherapy alone, but it may also cause more side effects. This clinical trial evaluates the safety and effectiveness of adding venetoclax and/or blinatumomab to chemotherapy for the treatment of infants with KMT2A-R or KMT2A-G ALL.
PRIMARY OBJECTIVES:
I. To evaluate the safety and tolerability of venetoclax in addition to a standard chemotherapy backbone and two cycles of blinatumomab in infants (aged 365 days or less at diagnosis) with newly diagnosed KMT2A-R ALL.
II. To determine in a randomized manner if the addition of venetoclax to induction chemotherapy improves end of induction minimal residual disease (MRD)-negative remission rates in infants with KMT2A-R ALL.
SECONDARY OBJECTIVES:
I. To estimate the MRD-negative remission rate for all eligible infants with KMT2A-R ALL treated with venetoclax at the recommended phase 2 dose (RP2D).
II. To compare event free survival (EFS) rates of infants with KMT2A-R ALL treated on arm B to those treated on arm A.
III. To compare 3-year EFS rates of infants with KMT2A-R ALL treated on arm A to historical controls.
IV. To determine the feasibility of treating infants with KMT2A-G ALL with a Children's Oncology Group (COG) high risk ALL chemotherapy backbone and two cycles of blinatumomab and estimate the 3-year EFS rate of infants with KMT2A-G ALL treated on arm C.
V. To characterize the pharmacokinetics (PK) of venetoclax in infants.
EXPLORATORY OBJECTIVES:
I. To describe 3-year EFS rate of infants with KMT2A-R ALL treated on arm B. II. To evaluate the use of high-throughput sequencing (HTS) for MRD detection in infant ALL compared to centralized flow cytometry.
III. To characterize the PK of calaspargase pegol in infants with ALL. IV. To report the incidence of CD19 negative relapse and myeloid switch relapse with protocol therapy.
V. To evaluate the impact of venetoclax in combination with chemotherapy on T-cell subsets and function.
VI. To describe the feasibility of T-cell collection and success of T-cell manufacturing for infants with KMT2A-R ALL who receive chimeric antigen receptor (CAR) T- cell therapy after coming off protocol therapy.
VII. To determine predictors of response and resistance to venetoclax and overall protocol therapy.
VIII. To evaluate the impact of subsequent anti-cancer therapy on overall survival after coming off protocol therapy.
IX. To compare overall survival (OS) rates of infants by arms and to historical OS rates.
OUTLINE:
STEROID PREPHASE: All patients receive prednisone or prednisolone orally (PO) or nasogastrically (NG) three times daily (TID) or methylprednisolone intravenously (IV) TID for 7 days prior to the start of induction therapy (on days 1-7).
Patients who are KMT2A gene rearrangement positive are assigned to the safety phase cohort during the safety phase of the study, or randomized between Arm A and Arm B during the expansion phase of the study. Patients who are KMT2A gene rearrangement negative are assigned to Arm C.
SAFETY PHASE COHORT (CLOSED TO ACCRUAL 06/03/2026):
INDUCTION: Patients receive venetoclax PO or NG once daily (QD) on days 1-7, 1-10, or 1-14, daunorubicin IV over 1-15 minutes on days 1 and 2, vincristine IV on days 1, 8, 15, and 22, dexamethasone PO, NG, or IV TID on days 1-28, calaspargase pegol IV over 1-2 hours on day 4, and intrathecal therapy (methotrexate, hydrocortisone, cytarabine) intrathecally (IT) on days 1, 15, and 29 or days 1, 8, 15, 22, and 29. Patients with \< 5% blasts by morphology in the bone marrow at the end of induction (day 35) proceed directly to blinatumomab block 1 on the next day or when absolute neutrophil counts (ANC) >= 500/uL and platelets >= 50,000/uL. Patients with >= 5% blasts by morphology in the bone marrow at the end of induction proceed to blinatumomab block 1 as soon as marrow results are known, irrespective of ANC or platelet values.
BLINATUMOMAB BLOCK 1: Patients receive dexamethasone PO, NG, or IV on day 1 or days 1 and 8, blinatumomab IV on days 1-28, 1-7, or 8-28, and intrathecal therapy IT on days 15 and 29. Patients who are MRD >= 1% or who have residual non-central nervous system (CNS) extramedullary disease at the end of blinatumomab block 1 (day 35) discontinue protocol therapy. All other patients proceed directly to consolidation on the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
CONSOLIDATION: Patients receive cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine subcutaneously (SC) QD or IV over 1-30 minutes on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO or NG QD on days 1-14 and 29-42, and intrathecal therapy IT on day 29. Patients who are MRD >= 0.01% at the end of consolidation therapy (day 56) discontinue protocol therapy. All other patients proceed directly to MARMA the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
MARMA: Patients receive mercaptopurine PO or NG QD on days 1-14, high dose methotrexate IV over 24 hours on days 1 and 8, leucovorin PO, NG, or IV or levoleucovorin IV on days 3-4 and 10-11, intrathecal therapy IT on days 1 and 8, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM on days 23 and 30. At the end of MARMA (day 49), all patients proceed directly to blinatumomab block 2 the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
BLINATUMOMAB BLOCK 2: Patients receive blinatumomab IV on days 1-28 and intrathecal therapy IT on days 1 and 15. At the end of blinatumomab block 2 (day 35), all patients proceed directly to delayed intensification the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
DELAYED INTENSIFICATION: Patients receive calaspargase pegol IV over 1-2 hours on day 1, dexamethasone PO, NG, or IV TID on days 1-21, thioguanine PO or NG on days 1-28 and 36-49, vincristine IV on days 1, 8, 15, and 22, daunorubicin IV over 1-15 minutes on days 1, 8, 15, and 22, cytarabine SC or IV over 1-30 minutes on days 2-5, 9-12, 16-19, 23-26, 37-40, and 44-47, cyclophosphamide IV over 15-30 minutes on days 36 and 50, and intrathecal therapy IT on days 1 and 15. At the end of delayed intensification (day 63), all patients proceed directly to maintenance the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
MAINTENANCE: Patients receive mercaptopurine PO or NG on days 1-84 of each cycle, methotrexate PO, NG, or IV on days 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, and 78 of each cycle, and intrathecal therapy IT on day 1 of cycles 1-3. Cycles repeat every 12 weeks (84 days) for up to 2 years from the start of MARMA in the absence of disease progression or unacceptable toxicity.
EXPANSION PHASE: After completion of Safety phase, patients who are KMT2A gene rearrangement positive are randomized to Arm A or Arm B.
ARM A:
INDUCTION: Patients receive daunorubicin IV over 1-15 minutes on days 1 and 2, cytarabine SC or IV over 1-30 minutes on days 1-14, vincristine IV on days 1, 8, 15, and 22, dexamethasone PO, NG, or IV TID on days 1-28, calaspargase pegol IV over 1-2 hours on day 4, and intrathecal therapy IT on days 1, 15, and 29, or days 1, 8, 15, 22, and 29. Patients with \< 5% blasts by morphology in the bone marrow at the end of induction (day 35) proceed directly to blinatumomab block 1 on the next day or when ANC >= 500/uL and platelets >= 50,000/uL. Patients with >= 5% blasts by morphology in the bone marrow at the end of induction proceed to blinatumomab block 1 as soon as marrow results are known, irrespective of ANC or platelet values.
BLINATUMOMAB BLOCK 1: Patients receive dexamethasone PO, NG, or IV on day 1 or days 1 and 8, blinatumomab IV on days 1-28, 1-7, or 8-28, and intrathecal therapy IT on days 15 and 29. Patients who are MRD >= 1% or who have residual non-CNS extramedullary disease at the end of blinatumomab block 1 (day 35) discontinue protocol therapy. All other patients proceed directly to consolidation on the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
CONSOLIDATION: Patients receive cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 1-30 minutes on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO or NG QD on days 1-14 and 29-42, and intrathecal therapy IT on day 29. Patients who are MRD >= 0.01% at the end of consolidation therapy (day 56) discontinue protocol therapy. All other patients proceed directly to MARMA the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
MARMA: Patients receive mercaptopurine PO or NG QD on days 1-14, high dose methotrexate IV over 24 hours on days 1 and 8, leucovorin PO, NG, or IV or levoleucovorin IV on days 3-4 and 10-11, intrathecal therapy IT on days 1 and 8, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM on days 23 and 30. At the end of MARMA (day 49), all patients proceed directly to blinatumomab block 2 the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
BLINATUMOMAB BLOCK 2: Patients receive blinatumomab IV on days 1-28 and intrathecal therapy IT on days 1 and 15. At the end of blinatumomab block 2 (day 35), all patients proceed directly to delayed intensification the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
DELAYED INTENSIFICATION: Patients receive calaspargase pegol IV over 1-2 hours on day 1, dexamethasone PO, NG, or IV TID on days 1-21, thioguanine PO or NG on days 1-28 and 36-49, vincristine IV on days 1, 8, 15, and 22, daunorubicin IV over 1-15 minutes on days 1, 8, 15, and 22, cytarabine SC or IV over 1-30 minutes on days 2-5, 9-12, 16-19, 23-26, 37-40, and 44-47, cyclophosphamide IV over 15-30 minutes on days 36 and 50, and intrathecal therapy IT on days 1 and 15. At the end of delayed intensification (day 63), all patients proceed directly to maintenance the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
MAINTENANCE: Patients receive mercaptopurine PO or NG on days 1-84 of each cycle, methotrexate PO, NG, or IV on days 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, and 78 of each cycle, and intrathecal therapy IT on day 1 of cycles 1-3. Cycles repeat every 12 weeks (84 days) for up to 2 years from the start of MARMA in the absence of disease progression or unacceptable toxicity.
ARM B: Patients are assigned to 1 of 4 cohorts.
COHORT 1:
INDUCTION + VENETOCLAX: Patients receive venetoclax PO or NG QD on days 1-14, daunorubicin IV over 1-15 minutes on days 1 and 2, vincristine IV on days 1, 8, 15, and 22, dexamethasone PO, NG, or IV TID on days 1-28, calaspargase pegol IV over 1-2 hours on day 4, and intrathecal therapy IT on days 1, 15, and 29 or days 1, 8, 15, 22, and 29. Patients with \< 5% blasts by morphology in the bone marrow at the end of induction (day 35) proceed directly to blinatumomab block 1 on the next day or when ANC >= 500/uL and platelets >= 50,000/uL. Patients with >= 5% blasts by morphology in the bone marrow at the end of induction proceed to blinatumomab block 1 as soon as marrow results are known, irrespective of ANC or platelet values.
BLINATUMOMAB BLOCK 1: Patients receive dexamethasone PO, NG, or IV on day 1 or days 1 and 8, blinatumomab IV on days 1-28, 1-7, or 8-28, and intrathecal therapy IT on days 15 and 29. Patients who are MRD >= 1% or who have residual non-CNS extramedullary disease at the end of blinatumomab block 1 (day 35) discontinue protocol therapy. All other patients proceed directly to consolidation on the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
CONSOLIDATION: Patients receive cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 1-30 minutes on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO or NG QD on days 1-14 and 29-42, and intrathecal therapy IT on day 29. Patients who are MRD >= 0.01% at the end of consolidation therapy (day 56) discontinue protocol therapy. All other patients proceed directly to MARMA the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
MARMA + VENETOCLAX: Patients receive mercaptopurine PO or NG QD on days 1-14, high dose methotrexate IV over 24 hours on days 1 and 8, leucovorin PO, NG, or IV or levoleucovorin IV on days 3-4 and 10-11, intrathecal therapy IT on days 1 and 8, venetoclax PO or NG QD on days 22-35, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM on days 23 and 30. At the end of MARMA (day 49), all patients proceed directly to blinatumomab block 2 the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
BLINATUMOMAB BLOCK 2: Patients receive blinatumomab IV on days 1-28 and intrathecal therapy IT on days 1 and 15. At the end of blinatumomab block 2 (day 35), all patients proceed directly to delayed intensification the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
DELAYED INTENSIFICATION: Patients receive calaspargase pegol IV over 1-2 hours on day 1, dexamethasone PO, NG, or IV TID on days 1-21, thioguanine PO or NG on days 1-28 and 36-49, vincristine IV on days 1, 8, 15, and 22, daunorubicin IV over 1-15 minutes on days 1, 8, 15, and 22, cytarabine SC or IV over 1-30 minutes on days 2-5, 9-12, 16-19, 23-26, 37-40, and 44-47, cyclophosphamide IV over 15-30 minutes on days 36 and 50, and intrathecal therapy IT on days 1 and 15. At the end of delayed intensification (day 63), all patients proceed directly to maintenance the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
MAINTENANCE: Patients receive mercaptopurine PO or NG on days 1-84 of each cycle, methotrexate PO, NG, or IV on days 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, and 78 of each cycle, and intrathecal therapy IT on day 1 of cycles 1-3. Cycles repeat every 12 weeks (84 days) for up to 2 years from the start of MARMA in the absence of disease progression or unacceptable toxicity.
COHORT 2:
INDUCTION + VENETOCLAX: Patients receive venetoclax PO or NG QD on days 1-14, daunorubicin IV over 1-15 minutes on days 1 and 2, vincristine IV on days 1, 8, 15, and 22, dexamethasone PO, NG, or IV TID on days 1-28, calaspargase pegol IV over 1-2 hours on day 4, and intrathecal therapy IT on days 1, 15, and 29 or days 1, 8, 15, 22, and 29. Patients with \< 5% blasts by morphology in the bone marrow at the end of induction (day 35) proceed directly to blinatumomab block 1 on the next day or when ANC >= 500/uL and platelets >= 50,000/uL. Patients with >= 5% blasts by morphology in the bone marrow at the end of induction proceed to blinatumomab block 1 as soon as marrow results are known, irrespective of ANC or platelet values.
BLINATUMOMAB BLOCK 1: Patients receive dexamethasone PO, NG, or IV on day 1 or days 1 and 8, blinatumomab IV on days 1-28, 1-7, or 8-28, and intrathecal therapy IT on days 15 and 29. Patients who are MRD >= 1% or who have residual non-CNS extramedullary disease at the end of blinatumomab block 1 (day 35) discontinue protocol therapy. All other patients proceed directly to consolidation on the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
CONSOLIDATION + VENETOCLAX: Patients receive venetoclax PO or NG QD on days 1-14 and 29-42, cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 1-30 minutes on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO or NG QD on days 1-14 and 29-42, and intrathecal therapy IT on day 29. Patients who are MRD >= 0.01% at the end of consolidation therapy (day 56) discontinue protocol therapy. All other patients proceed directly to MARMA the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
MARMA: Patients receive mercaptopurine PO or NG QD on days 1-14, high dose methotrexate IV over 24 hours on days 1 and 8, leucovorin PO, NG, or IV or levoleucovorin IV on days 3-4 and 10-11, intrathecal therapy IT on days 1 and 8, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM on days 23 and 30. At the end of MARMA (day 49), all patients proceed directly to blinatumomab block 2 the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
BLINATUMOMAB BLOCK 2: Patients receive blinatumomab IV on days 1-28 and intrathecal therapy IT on days 1 and 15. At the end of blinatumomab block 2 (day 35), all patients proceed directly to delayed intensification the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
DELAYED INTENSIFICATION: Patients receive calaspargase pegol IV over 1-2 hours on day 1, dexamethasone PO, NG, or IV TID on days 1-21, thioguanine PO or NG on days 1-28 and 36-49, vincristine IV on days 1, 8, 15, and 22, daunorubicin IV over 1-15 minutes on days 1, 8, 15, and 22, cytarabine SC or IV over 1-30 minutes on days 2-5, 9-12, 16-19, 23-26, 37-40, and 44-47, cyclophosphamide IV over 15-30 minutes on days 36 and 50, and intrathecal therapy IT on days 1 and 15. At the end of delayed intensification (day 63), all patients proceed directly to maintenance the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
MAINTENANCE: Patients receive mercaptopurine PO or NG on days 1-84 of each cycle, methotrexate PO, NG, or IV on days 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, and 78 of each cycle, and intrathecal therapy IT on day 1 of cycles 1-3. Cycles repeat every 12 weeks (84 days) for up to 2 years from the start of MARMA in the absence of disease progression or unacceptable toxicity.
COHORT 3:
INDUCTION + VENETOCLAX: Patients receive venetoclax PO or NG QD on days 1-14, daunorubicin IV over 1-15 minutes on days 1 and 2, vincristine IV on days 1, 8, 15, and 22, dexamethasone PO, NG, or IV TID on days 1-28, calaspargase pegol IV over 1-2 hours on day 4, and intrathecal therapy IT on days 1, 15, and 29 or days 1, 8, 15, 22, and 29. Patients with \< 5% blasts by morphology in the bone marrow at the end of induction (day 35) proceed directly to blinatumomab block 1 on the next day or when ANC >= 500/uL and platelets >= 50,000/uL. Patients with >= 5% blasts by morphology in the bone marrow at the end of induction proceed to blinatumomab block 1 as soon as marrow results are known, irrespective of ANC or platelet values.
BLINATUMOMAB BLOCK 1: Patients receive dexamethasone PO, NG, or IV on day 1 or days 1 and 8, blinatumomab IV on days 1-28, 1-7, or 8-28, and intrathecal therapy IT on days 15 and 29. Patients who are MRD >= 1% or who have residual non-CNS extramedullary disease at the end of blinatumomab block 1 (day 35) discontinue protocol therapy. All other patients proceed directly to consolidation on the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
CONSOLIDATION + VENETOCLAX: Patients receive venetoclax PO or NG QD on days 1-14 and 29-42, cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 1-30 minutes on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO or NG QD on days 1-14 and 29-42, and intrathecal therapy IT on day 29. Patients who are MRD >= 0.01% at the end of consolidation therapy (day 56) discontinue protocol therapy. All other patients proceed directly to MARMA the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
MARMA + VENETOCLAX: Patients receive mercaptopurine PO or NG QD on days 1-14, high dose methotrexate IV over 24 hours on days 1 and 8, leucovorin PO, NG, or IV or levoleucovorin IV on days 3-4 and 10-11, intrathecal therapy IT on days 1 and 8, venetoclax PO or NG QD on days 22-35, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM on days 23 and 30. At the end of MARMA (day 49), all patients proceed directly to blinatumomab block 2 the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
BLINATUMOMAB BLOCK 2: Patients receive blinatumomab IV on days 1-28 and intrathecal therapy IT on days 1 and 15. At the end of blinatumomab block 2 (day 35), all patients proceed directly to delayed intensification the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
DELAYED INTENSIFICATION: Patients receive calaspargase pegol IV over 1-2 hours on day 1, dexamethasone PO, NG, or IV TID on days 1-21, thioguanine PO or NG on days 1-28 and 36-49, vincristine IV on days 1, 8, 15, and 22, daunorubicin IV over 1-15 minutes on days 1, 8, 15, and 22, cytarabine SC or IV over 1-30 minutes on days 2-5, 9-12, 16-19, 23-26, 37-40, and 44-47, cyclophosphamide IV over 15-30 minutes on days 36 and 50, and intrathecal therapy IT on days 1 and 15. At the end of delayed intensification (day 63), all patients proceed directly to maintenance the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
MAINTENANCE: Patients receive mercaptopurine PO or NG on days 1-84 of each cycle, methotrexate PO, NG, or IV on days 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, and 78 of each cycle, and intrathecal therapy IT on day 1 of cycles 1-3. Cycles repeat every 12 weeks (84 days) for up to 2 years from the start of MARMA in the absence of disease progression or unacceptable toxicity.
COHORT 4:
INDUCTION + VENETOCLAX: Patients receive venetoclax PO or NG QD on days 1-14, daunorubicin IV over 1-15 minutes on days 1 and 2, vincristine IV on days 1, 8, 15, and 22, dexamethasone PO, NG, or IV TID on days 1-28, calaspargase pegol IV over 1-2 hours on day 4, and intrathecal therapy IT on days 1, 15, and 29 or days 1, 8, 15, 22, and 29. Patients with \< 5% blasts by morphology in the bone marrow at the end of induction (day 35) proceed directly to blinatumomab block 1 on the next day or when ANC >= 500/uL and platelets >= 50,000/uL. Patients with >= 5% blasts by morphology in the bone marrow at the end of induction proceed to blinatumomab block 1 as soon as marrow results are known, irrespective of ANC or platelet values.
BLINATUMOMAB BLOCK 1: Patients receive dexamethasone PO, NG, or IV on day 1 or days 1 and 8, blinatumomab IV on days 1-28, 1-7, or 8-28, and intrathecal therapy IT on days 15 and 29. Patients who are MRD >= 1% or who have residual non-CNS extramedullary disease at the end of blinatumomab block 1 (day 35) discontinue protocol therapy. All other patients proceed directly to consolidation on the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
CONSOLIDATION: Patients receive cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 1-30 minutes on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO or NG QD on days 1-14 and 29-42, and intrathecal therapy IT on day 29. Patients who are MRD >= 0.01% at the end of consolidation therapy (day 56) discontinue protocol therapy. All other patients proceed directly to MARMA the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
MARMA: Patients receive mercaptopurine PO or NG QD on days 1-14, high dose methotrexate IV over 24 hours on days 1 and 8, leucovorin PO, NG, or IV or levoleucovorin IV on days 3-4 and 10-11, intrathecal therapy IT on days 1 and 8, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM on days 23 and 30. At the end of MARMA (day 49), all patients proceed directly to blinatumomab block 2 the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
BLINATUMOMAB BLOCK 2: Patients receive blinatumomab IV on days 1-28 and intrathecal therapy IT on days 1 and 15. At the end of blinatumomab block 2 (day 35), all patients proceed directly to delayed intensification the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
DELAYED INTENSIFICATION: Patients receive calaspargase pegol IV over 1-2 hours on day 1, dexamethasone PO, NG, or IV TID on days 1-21, thioguanine PO or NG on days 1-28 and 36-49, vincristine IV on days 1, 8, 15, and 22, daunorubicin IV over 1-15 minutes on days 1, 8, 15, and 22, cytarabine SC or IV over 1-30 minutes on days 2-5, 9-12, 16-19, 23-26, 37-40, and 44-47, cyclophosphamide IV over 15-30 minutes on days 36 and 50, and intrathecal therapy IT on days 1 and 15. At the end of delayed intensification (day 63), all patients proceed directly to maintenance the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
MAINTENANCE: Patients receive mercaptopurine PO or NG on days 1-84 of each cycle, methotrexate PO, NG, or IV on days 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, and 78 of each cycle, and intrathecal therapy IT on day 1 of cycles 1-3. Cycles repeat every 12 weeks (84 days) for up to 2 years from the start of MARMA in the absence of disease progression or unacceptable toxicity.
ARM C:
INDUCTION: Patients receive daunorubicin IV over 1-15 minutes on days 1 and 2, cytarabine SC or IV over 1-30 minutes on days 1-14, vincristine IV on days 1, 8, 15, and 22, dexamethasone PO, NG, or IV TID on days 1-28, calaspargase pegol IV over 1-2 hours on day 4, and intrathecal therapy IT on days 1, 15, and 29, or days 1, 8, 15, 22, and 29. Patients with \< 5% blasts by morphology in the bone marrow at the end of induction (day 35) proceed directly to blinatumomab block 1 on the next day or when ANC >= 500/uL and platelets >= 50,000/uL. Patients with >= 5% blasts by morphology in the bone marrow at the end of induction proceed to blinatumomab block 1 as soon as marrow results are known, irrespective of ANC or platelet values.
BLINATUMOMAB BLOCK 1: Patients receive dexamethasone PO, NG, or IV on day 1 or days 1 and 8, blinatumomab IV on days 1-28, 1-7, or 8-28, and methotrexate IT on days 15 and 29. Patients who are MRD >= 1% or who have residual non-CNS extramedullary disease at the end of blinatumomab block 1 (day 35) discontinue protocol therapy. All other patients proceed directly to consolidation on the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
CONSOLIDATION: Patients receive cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 1-30 minutes on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO or NG QD on days 1-14 and 29-42, methotrexate IT on days 8, 15, and 22, vincristine IV on days 15, 22, 43, and 50, and calaspargase pegol IV over 1-2 hours on days 15 and 43. Patients who are MRD >= 0.01% at the end of consolidation therapy (day 56) discontinue protocol therapy. All other patients proceed directly to interim maintenance 1 the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
INTERIM MAINTENANCE 1: Patients receive vincristine IV on days 1, 15, 29, and 43, high dose methotrexate IV over 24 hours on days 1, 15, 29, and 43, mercaptopurine PO or NG on days 1-14, 15-28, 29-42, and 43-56, methotrexate IT on days 1 and 29, and leucovorin PO or NG or IV or levoleucovorin IV on days 3-4, 17-18, 31-32, and 45-46. At the end of interim maintenance 1 (day 63), all patients proceed directly to blinatumomab block 2 the next day or when peripheral counts recover to ANC >= 500/uL and platelets >= 50,000/uL.
BLINATUMOMAB BLOCK 2: Patients receive blinatumomab IV on days 1-28, and methotrexate IT on days 1 and 15. At the end of blinatumomab block 2 (day 35), all patients proceed directly to delayed intensification the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
DELAYED INTENSIFICATION: Patients receive methotrexate IT on days 1, 29, and 36, dexamethasone PO, NG, or IV BID on days 1-7 and 15-21, vincristine IV on days 1, 8, 15, 43, and 50, doxorubicin IV over 3-15 minutes on days 1, 8, and 15, calaspargase pegol IV over 1-2 hours on days 4 and 43, cyclophosphamide IV over 30-60 minutes on day 29, thioguanine PO or NG on days 29-42, and cytarabine SC or IV over 1-30 minutes on days 29-32 and 36-39. At the end of delayed intensification (day 63), all patients proceed directly to interim maintenance 2 the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
INTERIM MAINTENANCE 2: Patients receive vincristine IV on days 1, 11, 21, 31, and 41, methotrexate IV push over 2-5 minutes or IV over 10-15 minutes on days 1, 11, 21, 31, and 41, methotrexate IT on days 1 and 31, and calaspargase pegol IV over 1-2 hours on days 2 and 23. At the end of interim maintenance 2 (day 56), all patients proceed directly to maintenance the next day or when peripheral counts recover to ANC >= 750/uL and platelets >= 75,000/uL.
MAINTENANCE: Patients receive methotrexate IT on day 1 of cycles 1-3, vincristine IV on day 1 of each cycle, prednisone or prednisolone PO or NG BID or methylprednisolone IV BID on days 1-5 of each cycle, mercaptopurine PO or NG on days 1-84 of each cycle, and methotrexate PO, NG, or IV on days 1, 8, 15, 22, 29, 36, 43, 50, 57, 64, 71, and 78 of each cycle. Cycles repeat every 12 weeks (84 days) for up to 2 years from the start of interim maintenance 1 in the absence of disease progression or unacceptable toxicity.
All patients undergo bone marrow aspiration, collection of blood samples and echocardiography (ECHO) or multigated acquisition scan (MUGA) throughout the trial. Patients may undergo computed tomography (CT), magnetic resonance imaging (MRI), fludeoxyglucose-positron emission tomography (FDG-PET), and/or lumbar puncture if clinically indicated.
After completion of study treatment, patients are followed up for up to 3 years.
246 studies on the registry are indexed under Leukemia, Biphenotypic, Acute; 56 are open to participants now.
This study's planned enrollment of 153 is above the median of 50 across 185 interventional studies indexed under Leukemia, Biphenotypic, Acute.
Browse Leukemia, Biphenotypic, Acute studies →National Cancer Institute (NCI) is the lead sponsor of 3,556 studies on the registry; 336 are open to participants now.
Of its 411 completed or terminated interventional studies of FDA-regulated products, 373 (91%) have results posted.
Counted across the registry records on this site, refreshed daily.
Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.
Patients must have newly diagnosed B-acute lymphoblastic leukemia (B-ALL, 2017 World Health Organization [WHO] classification), also termed B-precursor ALL, or acute leukemia of ambiguous lineage (ALAL), which includes mixed phenotype acute leukemia. For patients with ALAL, the immunophenotype of the leukemia must comprise at least 50% B lineage
Exclusion Criteria:
Patients must not have received any cytotoxic chemotherapy for either the current diagnosis of infant ALL or for any cancer diagnosis prior to the initiation of protocol therapy, with the exception of:
pretreatment:
Intrathecal cytarabine or methotrexate:
Hydroxyurea:
Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Cancer (malignancy)
Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.
Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Corticosteroids (steroids)
Anti-inflammatory medicines such as prednisone, prednisolone and dexamethasone — not the anabolic steroids used for muscle.
Studies differ in what they allow: check which steroid medicines, routes (tablets, injections, creams, inhalers, eye drops) and doses this study accepts.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
Informed consent
Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.
You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.
Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.
See Detailed Description for Arm A.
Drug: Asparaginase Erwinia chrysanthemi · Procedure: Biospecimen Collection · Biological: Blinatumomab · Procedure: Bone Marrow Aspiration · Drug: Calaspargase Pegol · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Daunorubicin · Drug: Dexamethasone · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Drug: Leucovorin · Drug: Levoleucovorin · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Mercaptopurine · Drug: Methotrexate · Procedure: Multigated Acquisition Scan · Drug: Therapeutic Hydrocortisone · Drug: Thioguanine · Drug: Vincristine
See Detailed Description for Arm B, Cohort 1.
Drug: Asparaginase Erwinia chrysanthemi · Procedure: Biospecimen Collection · Biological: Blinatumomab · Procedure: Bone Marrow Aspiration · Drug: Calaspargase Pegol · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Daunorubicin · Drug: Dexamethasone · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Drug: Leucovorin · Drug: Levoleucovorin · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Mercaptopurine · Drug: Methotrexate · Procedure: Multigated Acquisition Scan · Drug: Therapeutic Hydrocortisone · Drug: Thioguanine · Drug: Venetoclax · Drug: Vincristine
See Detailed Description for Arm B, Cohort 2.
Drug: Asparaginase Erwinia chrysanthemi · Procedure: Biospecimen Collection · Biological: Blinatumomab · Procedure: Bone Marrow Aspiration · Drug: Calaspargase Pegol · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Daunorubicin · Drug: Dexamethasone · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Drug: Leucovorin · Drug: Levoleucovorin · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Mercaptopurine · Drug: Methotrexate · Procedure: Multigated Acquisition Scan · Drug: Therapeutic Hydrocortisone · Drug: Thioguanine · Drug: Venetoclax · Drug: Vincristine
See Detailed Description for Arm B, Cohort 3.
Drug: Asparaginase Erwinia chrysanthemi · Procedure: Biospecimen Collection · Biological: Blinatumomab · Procedure: Bone Marrow Aspiration · Drug: Calaspargase Pegol · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Daunorubicin · Drug: Dexamethasone · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Drug: Leucovorin · Drug: Levoleucovorin · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Mercaptopurine · Drug: Methotrexate · Procedure: Multigated Acquisition Scan · Drug: Therapeutic Hydrocortisone · Drug: Thioguanine · Drug: Venetoclax · Drug: Vincristine
See Detailed Description for Arm B, Cohort 4.
Drug: Asparaginase Erwinia chrysanthemi · Procedure: Biospecimen Collection · Biological: Blinatumomab · Procedure: Bone Marrow Aspiration · Drug: Calaspargase Pegol · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Daunorubicin · Drug: Dexamethasone · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Drug: Leucovorin · Drug: Levoleucovorin · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Mercaptopurine · Drug: Methotrexate · Procedure: Multigated Acquisition Scan · Drug: Therapeutic Hydrocortisone · Drug: Thioguanine · Drug: Venetoclax · Drug: Vincristine
See Detailed Description for Arm C.
Procedure: Biospecimen Collection · Biological: Blinatumomab · Procedure: Bone Marrow Aspiration · Drug: Calaspargase Pegol · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Daunorubicin · Drug: Dexamethasone · Drug: Doxorubicin · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Drug: Leucovorin · Drug: Levoleucovorin · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Mercaptopurine · Drug: Methotrexate · Drug: Methylprednisolone · Procedure: Multigated Acquisition Scan · Drug: Prednisolone · Drug: Prednisone · Drug: Therapeutic Hydrocortisone · Drug: Thioguanine · Drug: Vincristine
See Detailed Description for Safety Phase Cohort. (CLOSED TO ACCRUAL 06/03/2026)
Drug: Asparaginase Erwinia chrysanthemi · Procedure: Biospecimen Collection · Biological: Blinatumomab · Procedure: Bone Marrow Aspiration · Drug: Calaspargase Pegol · Procedure: Computed Tomography · Drug: Cyclophosphamide · Drug: Cytarabine · Drug: Daunorubicin · Drug: Dexamethasone · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Drug: Leucovorin · Drug: Levoleucovorin · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Mercaptopurine · Drug: Methotrexate · Procedure: Multigated Acquisition Scan · Drug: Therapeutic Hydrocortisone · Drug: Thioguanine · Drug: Venetoclax · Drug: Vincristine
All patients receive prednisone or prednisolone PO or NG TID or methylprednisolone IV TID for 7 days prior to the start of induction therapy (on days 1-7).
Procedure: Biospecimen Collection · Procedure: Bone Marrow Aspiration · Procedure: Computed Tomography · Procedure: Echocardiography Test · Procedure: FDG-Positron Emission Tomography · Procedure: Lumbar Puncture · Procedure: Magnetic Resonance Imaging · Drug: Methylprednisolone · Procedure: Multigated Acquisition Scan · Drug: Prednisolone · Drug: Prednisone
Given recombinant crisantaspase IM or crisantaspase IM or IV
Also known as: Asparaginase Erwinia chrysanthemi (Recombinant)-rywn, Asparaginase Erwinia chrysanthemi, Recombinant-rywn, Asparaginase Erwinia chrysanthemi-rywn, Crisantaspase, Crisantaspase Biobetter JZP-458, Crisantaspasum, Enrylaze, Erwinase, Erwinaze, JZP 458, JZP-458, JZP458, PF743, RC-P JZP-458, Recombinant Asparaginase erwinia chrysanthemi JZP-458, Recombinant Crisantaspase JZP-458, Recombinant Erwinia asparaginase JZP-458, Rylaze
Undergo collection of blood samples
Also known as: Biological Sample Collection, Biospecimen Collected, Sample Collection, Specimen Collection
Given IV
Also known as: AMG 103, AMG-103, AMG103, Anti-CD19 x Anti-CD3 Bispecific Monoclonal Antibody, Anti-CD19/Anti-CD3 Recombinant Bispecific Monoclonal Antibody MT103, Blincyto, MEDI 538, MEDI-538, MEDI538, MT 103, MT-103, MT103
Undergo bone marrow aspiration
Given IV
Also known as: Asparaginase (Escherichia coli Isoenzyme II), Conjugate with alpha-(((2,5-Dioxo-1-pyrrolidinyl)oxy)carbonyl)-omega-methoxypoly(oxy-1,2-ethanediyl), Asparlas, Calaspargase Pegol-mknl, EZN-2285, SC-PEG E. Coli L-Asparaginase, Succinimidyl Carbonate Monomethoxypolyethylene Glycol E. coli L-Asparaginase
Undergo CT
Also known as: CAT, CAT Scan, Computed Axial Tomography, Computerized Axial Tomography, Computerized axial tomography (procedure), Computerized Tomography, Computerized Tomography (CT) scan, CT, CT Scan, Diagnostic CAT Scan, Diagnostic CAT Scan Service Type, tomography
Given IV
Also known as: (-)-Cyclophosphamide, 2H-1,3,2-Oxazaphosphorine, 2-[bis(2-chloroethyl)amino]tetrahydro-, 2-oxide, monohydrate, Asta B 518, B 518, B-518, B518, Carloxan, Ciclofosfamida, Ciclofosfamide, Cicloxal, Clafen, Claphene, CP monohydrate, CTX, CYCLO-cell, Cycloblastin, Cycloblastine, Cyclophospham, Cyclophosphamid monohydrate, Cyclophosphamide Monohydrate, Cyclophosphamidum, Cyclophosphan, Cyclophosphane, Cyclophosphanum, Cyclostin, Cyclostine, Cytophosphan, Cytophosphane, Cytoxan, Fosfaseron, Frindovyx, Genoxal, Genuxal, Ledoxina, Mitoxan, Neosar, Revimmune, Syklofosfamid, WR 138719, WR- 138719, WR-138719, WR138719
Given IT or IV
Also known as: .beta.-Cytosine arabinoside, 1-.beta.-D-Arabinofuranosyl-4-amino-2(1H)pyrimidinone, 1-.beta.-D-Arabinofuranosylcytosine, 1-Beta-D-arabinofuranosyl-4-amino-2(1H)pyrimidinone, 1-Beta-D-arabinofuranosylcytosine, 1.beta.-D-Arabinofuranosylcytosine, 2(1H)-Pyrimidinone, 4-Amino-1-beta-D-arabinofuranosyl-, 2(1H)-Pyrimidinone, 4-amino-1.beta.-D-arabinofuranosyl-, Alexan, Ara-C, ARA-cell, Arabine, Arabinofuranosylcytosine, Arabinosylcytosine, Aracytidine, Aracytin, Aracytine, Beta-Cytosine Arabinoside, CHX-3311, Cytarabinum, Cytarbel, Cytosar, Cytosine Arabinoside, Cytosine-.beta.-arabinoside, Cytosine-beta-arabinoside, Erpalfa, Starasid, Tarabine PFS, U 19920, U-19920, Udicil, WR-28453
Given IV
Also known as: Daunomycin, Daunorrubicina, DNR, Leukaemomycin C, Rubidomycin, Rubomycin C
Given PO or NG or IV
Also known as: Aacidexam, Adexone, Aknichthol Dexa, Alba-Dex, Alin, Alin Depot, Alin Oftalmico, Amplidermis, Anemul mono, Auricularum, Auxiloson, Baycadron, Baycuten, Baycuten N, Cortidexason, Cortisumman, Decacort, Decadrol, Decadron, Decadron DP, Decalix, Decameth, Decasone R.p., Dectancyl, Dekacort, Deltafluorene, Deronil, Desamethasone, Desameton, Dexa-Mamallet, Dexa-Rhinosan, Dexa-Scheroson, Dexa-sine, Dexacortal, Dexacortin, Dexafarma, Dexafluorene, Dexalocal, Dexamecortin, Dexameth, Dexamethasone Intensol, Dexamethasonum, Dexamonozon, Dexapos, Dexinoral, Dexone, Dinormon, Dxevo, Fluorodelta, Fortecortin, Gammacorten, Hemady, Hexadecadrol, Hexadrol, LenaDex, Lokalison-F, Loverine, Methylfluorprednisolone, Millicorten, Mymethasone, Orgadrone, Spersadex, TaperDex, Visumetazone, ZoDex
Given IV
Also known as: Adriablastin, Hydroxydaunomycin, Hydroxyl Daunorubicin, Hydroxyldaunorubicin
Undergo ECHO
Also known as: EC, Echocardiography
Undergo FDG-PET
Also known as: FDG, FDG-PET, FDG-PET Imaging
Given PO or NG or IV
Also known as: Folinic acid
Given IV
Also known as: CL-307,782, Elvorine, Isovorin, Levofolene, Levorin, Isovorin, Khapzory, L-Leucovorin, Levofolinate, Levofolinic acid
Undergo lumbar puncture
Also known as: LP, Spinal Tap
Undergo MRI
Also known as: Magnetic Resonance, Magnetic Resonance Imaging (MRI), Magnetic resonance imaging (procedure), Magnetic Resonance Imaging Scan, Medical Imaging, Magnetic Resonance / Nuclear Magnetic Resonance, MR, MR Imaging, MRI, MRI Scan, MRIs, NMR Imaging, NMRI, Nuclear Magnetic Resonance Imaging, sMRI, Structural MRI
Given PO or NG
Also known as: 3H-Purine-6-thiol, 6 MP, 6 Thiohypoxanthine, 6 Thiopurine, 6-Mercaptopurine, 6-Mercaptopurine Monohydrate, 6-MP, 6-Purinethiol, 6-Thiopurine, 6-Thioxopurine, 6H-Purine-6-thione, 1,7-dihydro- (9CI), 7-Mercapto-1,3,4,6-tetrazaindene, Alti-Mercaptopurine, Azathiopurine, Bw 57-323H, Flocofil, Ismipur, Leukerin, Leupurin, Mercaleukim, Mercaleukin, Mercaptina, Mercaptopurinum, Mercapurin, Mern, NCI-C04886, Puri-Nethol, Purimethol, Purine, 6-mercapto-, Purine-6-thiol (8CI), Purine-6-thiol, monohydrate, Purinethiol, Purinethol, U-4748, WR-2785
Given IT or IV or PO or NG
Also known as: Abitrexate, Alpha-Methopterin, Amethopterin, Brimexate, CL 14377, CL-14377, Emtexate, Emthexat, Emthexate, Farmitrexat, Fauldexato, Folex, Folex PFS, Jylamvo, Lantarel, Ledertrexate, Lumexon, Maxtrex, Medsatrexate, Metex, Methoblastin, Methotrexate LPF, Methotrexate Methylaminopterin, Methotrexatum, Metotrexato, Metrotex, Mexate, Mexate-AQ, MTX, Novatrex, Rheumatrex, Texate, Tremetex, Trexeron, Trixilem, WR-19039
Given IV
Also known as: Adlone, Caberdelta M, DepMedalone, Depo Moderin, Depo-Nisolone, Duralone, Emmetipi, Esametone, Firmacort, Medlone 21, Medrate, Medrol, Medrol Veriderm, Medrone, Mega-Star, Meprolone, Methylprednisolonum, Metilbetasone Solubile, Metrocort, Metypresol, Metysolon, Predni-M-Tablinen, Prednilen, Radilem, Sieropresol, Solpredone, Summicort, Urbason, Veriderm Medrol, Wyacort
Undergo MUGA
Also known as: Blood Pool Scan, Equilibrium Radionuclide Angiography, Gated Blood Pool Imaging, Gated Heart Pool Scan, MUGA, MUGA Scan, Multi-Gated Acquisition Scan, Radionuclide Ventriculogram Scan, Radionuclide Ventriculography, RNV Scan, RNVG, SYMA Scanning, Synchronized Multigated Acquisition Scanning
Given PO or NG
Also known as: (11beta)-11,17,21-Trihydroxypregna-1,4-diene-3,20-dione, .delta.1-Hydrocortisone, Adnisolone, Aprednislon, Capsoid, Cortalone, Cortisolone, Dacortin H, Decaprednil, Decortin H, Delta(1)Hydrocortisone, Delta- Cortef, Delta-Cortef, Delta-Diona, Delta-F, Delta-Phoricol, Delta1-dehydro-hydrocortisone, Deltacortril, Deltahydrocortisone, Deltasolone, Deltidrosol, Dhasolone, Di-Adreson-F, Dontisolon D, Estilsona, Fisopred, Frisolona, Gupisone, Hostacortin H, Hydeltra, Hydeltrasol, Klismacort, Kuhlprednon, Lenisolone, Lepi-Cortinolo, Linola-H N, Linola-H-Fett N, Longiprednil, Metacortandralone, Meti Derm, Meticortelone, Opredsone, Panafcortelone, Precortisyl, Pred-Clysma, Predeltilone, Predni-Coelin, Predni-Helvacort, Prednicortelone, Prednisolonum, Prelone, Prenilone, Sterane
Given PO or NG
Also known as: .delta.1-Cortisone, 1, 2-Dehydrocortisone, Adasone, Cortancyl, Dacortin, DeCortin, Decortisyl, Decorton, Delta 1-Cortisone, Delta-Dome, Deltacortene, Deltacortisone, Deltadehydrocortisone, Deltasone, Deltison, Deltra, Econosone, Lisacort, Meprosona-F, Metacortandracin, Meticorten, Ofisolona, Orasone, Panafcort, Panasol-S, Paracort, Perrigo Prednisone, PRED, Predicor, Predicorten, Prednicen-M, Prednicort, Prednidib, Prednilonga, Predniment, Prednisone Intensol, Prednisonum, Prednitone, Promifen, Rayos, Servisone, SK-Prednisone
Given IT
Also known as: Aeroseb-HC, Barseb HC, Barseb-HC, Cetacort, Cort-Dome, Cortef, Cortenema, Cortifan, Cortisol, Cortispray, Cortril, Dermacort, Domolene, Eldecort, Hautosone, Heb-Cort, Hydrocortisone, Hydrocortone, Hytone, Komed-HC, Nutracort, Proctocort, Rectoid
Given PO or NG
Also known as: 2-Amino 6MP, 2-Amino-1,7-dihydro-6H-purine-6-thione, 2-Amino-6-mercaptopurine, 2-Amino-6-purinethiol, 2-Aminopurin-6-thiol, 2-Aminopurine-6(1H)-thione, 2-Aminopurine-6-thiol, 2-Aminopurine-6-thiol Hemihydrate, 2-Mercapto-6-aminopurine, 6-Amino-2-mercaptopurine, 6-Mercapto-2-aminopurine, 6-Mercaptoguanine, 6-TG, 6H-Purine-6-thione, 2-amino-1,7-dihydro- (9CI), BW 5071, Lanvis, Tabloid, Thioguanine Hemihydrate, Thioguanine Hydrate, Tioguanin, Tioguanine, Wellcome U3B, WR-1141, X 27
Given PO or NG
Also known as: ABT 199, ABT-0199, ABT-199, ABT199, GDC 0199, GDC-0199, GDC0199, RG7601, Venclexta, Venclyxto
Given IV
Also known as: LCR, Leurocristine, VCR, Vincrystine
Incidence of dose-limiting toxicities (DLTs) (safety phase)
For the safety phase, DLTs of the induction + venetoclax cycle of KMT2A-rearranged (R) patients will be assessed.
Time frame: For the duration of the induction + venetoclax cycle
Incidence of DLTs (expansion phase)
For the expansion phase, DLTs of Arm B will be assessed and monitored for the cycles that contain venetoclax (induction, consolidation, and MARMA cycles of Arm B).
Time frame: During the induction, consolidation, and MARMA cycles of Arm B
Minimal residual disease (MRD)-negative remission rate
The end of induction MRD-negative remission rate will be compared between Arm A and Arm B. MRD negativity is defined as achievement of complete remission and MRD \< 0.01% by flow cytometry. The MRD-negative remission rate at the end of induction between Arm A and Arm B will be compared using a one-sided Z test of proportions with Type I error of 0.15.
Time frame: At the end of induction
MRD-negative remission rate
MRD-negative remission rate at the end of induction and the standard error or 95% confidence interval will be estimated among infants with KMT2A-R acute lymphoblastic leukemia (ALL) treated with venetoclax at the RP2D. This analysis will include eligible KMT2A-R patients treated with venetoclax at the RP2D in the safety phase, as well as patients randomized to Arm B and treated with venetoclax in the expansion phase. MRD negativity is defined as \< 0.01% by flow cytometry.
Time frame: At the end of induction
Event free survival (EFS) rates of infants with KMT2A-R ALL
The EFS rates from date of randomization of Arm B will be compared to Arm A. Comparison of EFS rates between Arm A and Arm B will be based on a one-sided logrank test with Type I error of 0.15. In addition, EFS rates will be estimated using the Kaplan-Meier method with Greenwood standard errors. Hazard ratios and confidence intervals will be estimated based on Cox regression models as appropriate. Cumulative incidence rates of each EFS event type (relapse, treatment failure, secondary malignant neoplasm and death) will also be estimated and presented with cumulative incidence curves and compared between arms as appropriate.
Time frame: From date of randomization to treatment failure, first documented relapse following achievement of remission-1, occurrence of a second or secondary malignant neoplasm, or death, assessed up to 3 years
3-year EFS of infants with KMT2A-R ALL
For Arm A, the 3-year EFS rate (representing a plateau rate based on the shape of EFS curves of historical data in this patient population) from the date of randomization will be compared to the stable historical 3-year EFS rate of 35% observed in AALL0631 and other international trials.
Time frame: From date of randomization to treatment failure, first documented relapse following achievement of remission-1, occurrence of a second or secondary malignant neoplasm, or death, assessed up to 3 years
Proportion of KMT2A-germline (G) patients in Arm C who are able to receive all treatment cycles before maintenance
The feasibility of treating KMT2A-G patients with a high-risk ALL backbone and two cycles of blinatumomab (Arm C) will be assessed. Arm C treatment will be considered feasible for KMT2A-G patients if the proportion of KMT2A-G patients in Arm C who are able to receive all treatment cycles before maintenance (i.e., up to interim maintenance 2) is more than 76.8%. The proportion of patients receiving all cycles before Maintenance will be compared to 76.8% with a one-sample exact test of proportion with Type I error of 0.15.
Time frame: Up to interim maintenance 2
3-year EFS of infants with KMT2A-G ALL treated on Arm C
The 3-year EFS rate from date of enrollment of KMT2A-G patients in Arm C will be estimated with the Kaplan-Meier method.
Time frame: From date of enrollment to treatment failure, first documented relapse following achievement of remission-1, occurrence of a second or secondary malignant neoplasm, or death, assessed up to 3 years
Pharmacokinetics (PK) of venetoclax in infants
PK samples will be collected from patients enrolled in the safety phase of the study as well as from patients randomized to Arm B in the expansion phase who consent to participate, to determine the major secondary objective of characterizing the PK of venetoclax in infants. PK samples will be evaluated in batches and standard nonlinear mixed effect modeling will be used for model building and refinement of time-concentration data. After model refinement, a non-parametric bootstrap analysis will be performed reporting the 95% confidence intervals for each PK parameter.
Time frame: On days 7, 10, and 14 of induction
3-year EFS of infants with KMT2A-R ALL treated on Arm B
Arm B, the 3-year EFS rate from date of randomization will be estimated, and will be compared to Arm A as described in the secondary objective, and to historical 3-year EFS. Comparison to historical rate will be based on a one-sample test of proportion with one-sided Type I error of 0.15.
Time frame: From date of randomization to treatment failure, first documented relapse following achievement of remission-1, occurrence of a second or secondary malignant neoplasm, or death, assessed up to 3 years
Use of high-throughput sequencing (HTS) for MRD detection in infant ALL compared to centralized flow cytometry
Pre-treatment HTS clonality and HTS MRD tracking results will be collected and compared to the required centralized flow cytometry-based MRD data to evaluate the feasibility and prognostic utility of HTS MRD evaluation in the infant ALL population.
Time frame: Up to 3 years
PK of calaspargase pegol in infants with ALL
PK of calaspargase pegol will be analyzed by monitoring asparaginase activity levels. Once a PK model is developed for calaspargase pegol, standard regression analysis will be used to describe the relationship between drug exposure and asparaginase activity. Additionally, asparaginase-associated toxicities will be described for the entire study population and correlated with activity levels when possible. The result of this analysis will be an estimation of potential optimal exposure expected to yield the maximum efficacy while limiting toxicity. These analyses will be exploratory and descriptive.
Time frame: At completion of the trial, up to 3 years
Incidence of CD19-negative relapse and myeloid switch relapse with protocol therapy
For patients who experience relapse, will collect information regarding the immunophenotype of the leukemic blasts at time of relapse. Will report on the rate of CD19 negative relapse as well as myeloid switch relapse for all patients enrolled on study. This analysis will be exploratory and descriptive.
Time frame: At the time of relapse, up to 3 years
Impact of venetoclax in combination with chemotherapy on T-cell subsets and function
BCL-2 inhibition is reported to alter T-cell subsets, including increased activation, enhanced cytotoxicity against leukemia cells and heightened resistance to cell death. Peripheral blood and bone marrow samples will be collected prior to and following the first course of venetoclax to evaluate effects on T-cell subsets and function following venetoclax exposure.
Time frame: Prior to and following the first course of venetoclax
Feasibility of T-cell collection and success of T-cell manufacturing for infants with KMT2A-R ALL who receive chimeric antigen receptor (CAR) T-cell therapy
For patients that undergo T-cell collection, will collect data regarding the feasibility of T-cell collection in the context of protocol therapy. Additionally, for patients who proceed with CAR T-cell therapy after coming off protocol therapy, will collect data regarding the success of T-cell manufacturing, infusion and response to therapy in this young population, as the success of this subsequent therapy may be heavily impacted by the effect of protocol therapy on T-cell function. These analyses will be exploratory and descriptive.
Time frame: After coming off protocol therapy
Predictors of response and resistance to venetoclax and overall protocol therapy
Will study the inter- and intra- patient variability in the expression of apoptotic proteins (e.g., BCL-2, MCL-1, BCL-XL) and apoptotic priming at diagnosis and identify changes that occur during induction therapy in relationship to venetoclax exposure. Will then determine whether the state of BCL-2 specific apoptotic priming correlates with outcome. Will also integrate genomic and molecular features (such as developmental state, signaling, epigenomic, transcriptomic, proteomic and metabolomic states) before and after venetoclax exposure, for those assays where this type of analysis is feasible, to determine biomarkers of response and resistance to therapy for infants with ALL.
Time frame: Before and after venetoclax exposure, up to 3 years
Impact of subsequent anti-cancer therapy on overall survival
For all patients who remain in study follow-up after coming off protocol therapy, data will be collected regarding subsequent cancer directed therapies received as well as relapse and survival status in order to evaluate the impact of subsequent cancer directed therapy on the overall survival of patients enrolled on this study. These analyses will be exploratory and descriptive.
Time frame: After coming off protocol therapy
Overall survival (OS) rates
Will compare OS rates of infants by arms and to historical OS rates. The OS rates from the date of randomization of patients with KMT2A-R ALL will be compared between Arm A and Arm B. Comparison of OS rates between Arm A and Arm B will be based on a one-sided logrank test with Type I error of 0.15. In addition, OS rates of KMT2A-R patients in Arm A and Arm B will be compared to historical rates observed in similar patients in completed studies such as AALL0631 or AALL15P1. In addition, OS from enrollment of KMT2A-G patients will be compared to historical rates. OS rates will be estimated using the Kaplan-Meier method with Greenwood standard errors. Hazard ratios and confidence intervals will be estimated based on Cox regression models as appropriate. These analyses will be largely exploratory.
Time frame: From randomization to death due to any cause, up to 3 years
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Plan to share: Yes — NCI is committed to sharing data in accordance with NIH policy. For more details on how clinical trial data is shared, access the link to the NIH data sharing policy page.
Data sharing details ↗ · grants.nih.gov
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Studies of the drugs tested here: Blinatumomab · Methylprednisolone · Prednisolone · Prednisone · Venetoclax
Leukemia, Biphenotypic, Acute →
National Cancer Institute (NCI) →