The overarching objective of this study is to use novel precision medicine strategies based on inherited and acquired leukemia-specific genomic features and targeted treatment approaches to improve the cure rate and quality of life of children with acute lymphoblastic leukemia (ALL) and acute lymphoblastic lymphoma (LLy).
Primary Therapeutic Objectives:
Secondary Therapeutic Objectives:
Biological Objectives:
Supportive Care Objectives
There are several Exploratory Objectives.
Participants will be classified into one of three categories (low-, standard-, or high-risk) based on the presenting age, leukocyte count/lymphoma staging, presence or absence of CNS-3 status or testicular disease, immunophenotype, molecular genetics, DNA index, and early response to therapy.
Treatment will consist of three main phases: Remission Induction, Consolidation, and Continuation. Early Intensification therapy will be given prior to Consolidation to patients with provisional standard-risk or high-risk ALL/LLy or any provisional low-risk patients with Day 15 MRD ≥1% as well as provisional low-risk LLy patients who do not obtain complete response at the end of Induction. Patients with mixed phenotype acute leukemia (MPAL) are treated by using the same treatment stratification used in ALL although analysis is performed separately from ALL or LLy cohorts.
Brief outline of treatment plan:
Patients will be assigned to treatment based on risk group: Low-Risk, Standard-Risk and High-Risk and cell type (T or B cell).
Remission Induction initially consists of prednisone (28 days), vincristine (4 weekly doses), daunorubicin (1 to 3 weekly doses), and pegaspargase 1 dose for all patients and 2 doses for those with Day 15 MRD 1% or higher. The second part (given over 2 weeks and overlapping with the last week of the first part of induction) consists of cyclophosphamide, cytarabine, and mercaptopurine combinations. Dasatinib will be added for patients with Ph+ and Ph-like ABL-class fusions and bortezomib will be given to patients with no targetable lesions and Day 15 or Day 22 minimal residual disease (MRD) ≥ 5% on Days 29 and 32.
Early Intensification will be given prior to Consolidation to patients with provisional standard-risk or high-risk ALL/LLy or any provisional low-risk patients with Day 15 MRD ≥1% as well as provisional low-risk LLy patients who do not obtain complete response at the end of Induction. For patients with Ph-like ALL that is targetable with JAK inhibitor and Day 15 or Day 22 MRD level ≥5% or end of Remission Induction ≥1% as well as all patients with early T cell precursor (ETP) ALL and T/M MPAL, ruxolitinib will be used. This includes, but is not limited to CRLF2, JAK2, and EPOR rearrangements and sequence/structural changes in JAK1/2, TYK2, IL7R, and SH2B3. Ruxolitinib will be added in LLy patients with activation of JAK-STAT signaling that can be inhibited by ruxolitinib whose responses do not qualify complete response at the end of Remission Induction. Dasatinib will continue for patients with ABL-class fusions. Bortezomib will be added for patients with no targetable lesions and Day 15 or Day 22 MRD ≥ 5% or LLy patients without complete response at the End of Induction.
Consolidation Treatment will consist of high dose methotrexate (HDMTX) (every other week for 4 doses); daily mercaptopurine and IT chemotherapy on the same dates of HDMTX. Dasatinib will continue for patients with ABL-class fusions. Ruxolitinib will continue for patients with activation of JAK-STAT signaling that can be inhibited by ruxolitinib and Day 15 or Day 22 MRD ≥5% or Day 42 MRD ≥1% (or for LLy patients who do not qualify complete response at the end of Remission Induction) and all cases with ETP ALL and T/M MPAL.
Immunotherapy: CAR T-cell therapy will be considered for High-risk B-ALL and B-LLy patients. Blinatumomab will be given to patients with Standard-risk B-ALL and B-LLy with residual disease at the end of induction and High-risk B-ALL and B-LLy patients who are not able to receive CAR T-cell therapy. Blinatumomab is also given to patients with the following genetic subtypes (BCR-ABL1, ABL-class fusion, JAK-STAT activating mutation, hypodiploid, iAMP21, ETV6-RUNX1-like, MEF2D, TCF3/HLF, or BCL2/MYC) or with Down syndrome, regardless of MRD level and/or Total 17 risk category.
Reintensification therapy will be offered to certain High-risk patients with persistent MRD after Immunotherapy (B-ALL and B-LLy) or Early Intensification (T-ALL and T-LLy), or those who cannot receive Immunotherapy.
Continuation Treatment will consist of 120 weeks of risk-directed therapy. Dasatinib will continue in patients with ABL-class fusion. Ruxolitinib will continue in patients with activation of JAK-STAT signaling that can be inhibited by ruxolitinib and Day 15 or Day 22 MRD ≥5% or Day 42 MRD ≥1% (or for LLy patients who do not qualify complete response at the end of Remission Induction) and all cases with ETP ALL. T-ALL and T-LLy patients with leukemia/lymphoma cells in cerebrospinal fluid at diagnosis or MRD ≥0.01% at the end of Induction will receive nelarabine. ALL/LLy Patients with the CEP72 rs904627T/T genotype (16% of patients) will be randomized (unblinded design except those who evaluate neuropathies) to receive either 1.5 mg/m2 or 1 mg/m2 of vincristine after Continuation Week 1. Patients in low- risk will complete vincristine in Week 49 and those in standard/high-risk will complete in Week 101. Standard/high-risk patients with either a CEP72 rs904627 C/T or C/C genotype (84% of patients) will be randomized to receive vincristine and dexamethasone pulses through Week 49 of Continuation Treatment or through Week 101 of Continuation Treatment. Low-risk patients will complete vincristine in Week 49.
Intrathecal therapy is given throughout the treatment. The number of intrathecal therapy is based on the risk factors of central nervous system relapse.
Condition | Acute Lymphoblastic Leukemia, Acute Lymphoblastic Lymphoma |
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Treatment | Rituximab, cyclophosphamide, methotrexate, cytarabine, etoposide, prednisone, Ruxolitinib, Dexamethasone, vincristine, doxorubicin, Pegaspargase, Bortezomib, Vorinostat, Mercaptopurine, Idarubicin, Clofarabine, Daunorubicin, Thioguanine, dasatinib, Blinatumomab, Nelarabine, Erwinase®, calaspargase pegol, Asparaginase Erwinia chrysanthemi (recombinant)-rywn |
Clinical Study Identifier | NCT03117751 |
Sponsor | St. Jude Children's Research Hospital |
Last Modified on | 7 October 2022 |
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