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-mknl 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. 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: 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 15-30 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 or crisantaspase IM or IV over 1-2 hours 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 15-30 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 15-30 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 15-30 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 or crisantaspase IM or IV over 1-2 hours 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 15-30 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, 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 15-30 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, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM or crisantaspase IM or IV over 1-2 hours 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 15-30 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, 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, cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 15-30 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 or crisantaspase IM or IV over 1-2 hours 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 15-30 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, 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, cyclophosphamide IV over 30-60 minutes on days 1 and 29, cytarabine SC QD or IV over 15-30 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, high dose cytarabine IV over 3 hours on days 22-23 and 29-30, and recombinant crisantaspase IM or crisantaspase IM or IV over 1-2 hours 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 15-30 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, 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 15-30 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 or crisantaspase IM or IV over 1-2 hours 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 15-30 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 15-30 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 15-30 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 TID 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 15-30 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 of 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 each cycle, 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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
153
Given recombinant crisantaspase IM or crisantaspase IM or IV
Undergo collection of blood samples
Given IV
Undergo bone marrow aspiration
Given IV
Undergo CT
Given IV
Given IT or IV
Given IV
Given PO or NG or IV
Given IV
Undergo ECHO
Undergo FDG-PET
Given PO or NG or IV
Given IV
Undergo lumbar puncture
Undergo MRI
Given PO or NG
Given IT or IV or PO or NG
Given IV
Undergo MUGA
Given PO or NG
Given PO or NG
Given IT
Given PO or NG
Given PO or NG
Given IV
Children's Hospital of Alabama
Birmingham, Alabama, United States
RECRUITINGProvidence Alaska Medical Center
Anchorage, Alaska, United States
RECRUITINGBanner Children's at Desert
Mesa, Arizona, United States
RECRUITINGArkansas Children's Hospital
Little Rock, Arkansas, United States
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.
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
This platform is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional.
Loma Linda University Medical Center
Loma Linda, California, United States
RECRUITINGUCSF Benioff Children's Hospital Oakland
Oakland, California, United States
RECRUITINGKaiser Permanente-Oakland
Oakland, California, United States
RECRUITINGChildren's Hospital of Orange County
Orange, California, United States
RECRUITINGUCSF Medical Center-Mission Bay
San Francisco, California, United States
RECRUITINGChildren's Hospital Colorado
Aurora, Colorado, United States
RECRUITING...and 90 more locations