Summary

This randomized phase III trial studies combination chemotherapy with blinatumomab to see how well it works compared to induction chemotherapy alone in treating patients with newly diagnosed breakpoint cluster region (BCR)-c-abl oncogene 1, non-receptor tyrosine kinase (ABL)-negative B lineage acute lymphoblastic leukemia. Drugs used in chemotherapy 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. Immunotherapy with monoclonal antibodies, such as blinatumomab, may help the body’s immune system attack the cancer, and may interfere with the ability of tumor cells to grow and spread. It is not yet known whether combination chemotherapy is more effective with or without blinatumomab in treating newly diagnosed acute lymphoblastic leukemia.

Objectives

PRIMARY OBJECTIVE:
I. To compare the overall survival (OS) of blinatumomab in conjunction with chemotherapy to chemotherapy alone in patients with BCR-ABL-negative B cell precursor acute lymphoblastic leukemia (ALL) who are minimal residual disease (MRD) negative after induction and intensification chemotherapy, based on multiparameter flow cytometric (MFC) assessment of residual blasts.

SECONDARY OBJECTIVES:
I. To compare the relapse-free survival (RFS) of blinatumomab in conjunction with chemotherapy to chemotherapy alone in MRD negative patients after induction and intensification chemotherapy.
II. To compare the OS and RFS of those patients who are MRD positive (+) at step 3 randomization/registration and then convert to MRD negative (-) after 2 cycles of blinatumomab to those patients who are MRD- at randomization and remain MRD- after 2 cycles of blinatumomab or consolidation chemotherapy.
III. To assess the toxicities of blinatumomab in this patient population.
IV. To assess the toxicities of the modified E2993 chemotherapy regimen in this patient population.
V. To describe the outcome of patients who proceed to allogeneic blood or marrow transplant after treatment with or without blinatumomab.

LABORATORY OBJECTIVES:
I. To determine differences in MRD kinetics among patients with the BCR/ABL1-like B-lineage ALL, and to compare the OS (and RFS) of patients with BCR-ABL-like phenotype with those without BCR-ABL-like phenotype.
II. To evaluate the incidence of anti-blinatumomab antibody formation.

OUTLINE:
INDUCTION CHEMOTHERAPY: Patients receive cytarabine intrathecally (IT) on day 1; daunorubicin hydrochloride intravenously (IV) over 10-15 minutes on days 1, 8, 15, and 22; vincristine sulfate IV on days 1, 8, 15, and 22; dexamethasone orally (PO) daily on days 1-7 (and 15-21 for patients age < 55 years only); methotrexate IT on day 14; pegaspargase intramuscularly (IM) or IV on day 18 (patients age < 55 years); and CD20 positive patients may optionally receive rituximab IV on day 8 and 15. Beginning on day 29, patients with absolute neutrophil count (ANC) >= 0.75 x 10^9/L and platelets > 75 x 10^9/L (patients with delayed hematologic recovery) (patients with residual disease that is delaying count begin treatment immediately) receive cyclophosphamide IV over 30 minutes on days 1 and 29, cytarabine IV over 30 minutes or subcutaneously (SC) on days 1-4, 8-11, 29-32, and 36-39, mercaptopurine PO on days 1-14, 29-42, pegaspargase IM or IV on day 15 (patients age < 55 years), patients receiving treatment for central nervous system (CNS) 2 or 3 leukemia in cycle 1 receive methotrexate IT on days 1, 8, 15, and 22, and CD20 positive patients may optionally receive rituximab IV on days 8 and 15.

INTENSIFICATION THERAPY: Beginning 4 weeks after the completion of cycle 2 of induction therapy, patients receive intensification therapy comprising high-dose methotrexate IV over 2 hours on days 1 and 8, and pegaspargase IM or IV on day 9.

Patients are then randomized to 1 of 2 treatment arms.

Patients randomized to the blinatumomab group receive blinatumomab IV continuously on days 1-28. Treatment repeats every 6 weeks for 2 cycles in the absence of disease progression or unacceptable toxicity. Patients may then undergo allogeneic stem cell transplant (SCT) or proceed to consolidation therapy per investigator discretion.

CONSOLIDATION THERAPY: Beginning after the second cycle of blinatumomab (patients randomized to the blinatumomab group) or after intensification therapy (patients not randomized to blinatumomab), patients receive cytarabine IV over 30 minutes or SC on days 1-5, etoposide IV over 1 hour on days 1-5, methotrexate IT on day 1, and pegaspargase IM or IV on day 5, and CD20 positive patients may optionally receive rituximab IV on day 5. Beginning 4 weeks from day 1 of cycle 1, patients receive cytarabine, etoposide, methotrexate, and CD20 positive patients may receive rituximab as in cycle 1. Beginning 4 weeks from day 1 of cycle 2, patients receive daunorubicin hydrochloride IV over 10-15 minutes on day 1, 8, 15, and 22; vincristine sulfate IV on days 1, 8, 15, and 22; dexamethasone PO daily on days 1-7 (and 15-21 for patients age < 55 years); methotrexate IT on day 2; cyclophosphamide IV over 30 minutes on day 29; cytarabine IV over 30 minutes or SC on days 30-33 and 37-40; mercaptopurine PO on days 29-42 and CD20 positive patients may receive rituximab on day 8. Beginning 8 weeks from day 1 of cycle 3, patients receive cytarabine, etoposide, methotrexate, and CD20 positive patients may optionally receive rituximab as in cycle 1. Patients randomized to blinatumomab repeat cycle 4 and then receive blinatumomab IV continuously on days 1-28.

MAINTENANCE THERAPY: Within 6 weeks after beginning last cycle of consolidation therapy, patients receive mercaptopurine PO daily, methotrexate PO or IV over 2 hours once weekly for 2.5 years, vincristine sulfate IV on day 1 every 3 months, prednisone PO on days 1-5 every 3 months, and methotrexate IT on day 1 every 3 months. Treatment continues for up to 2.5 years in the absence of disease progression or unacceptable toxicity.

Patients undergo x-ray imaging during screening, lumbar puncture while on study, and bone marrow aspiration, bone marrow biopsy, and blood sample collection throughout the study.

After completion of study treatment, patients are followed up every 3 months for 2 years, every 6 months for 3 years, and then every 12 months for 5 years.

Eligibility

1. PRE-REGISTRATION
2. Diagnostic bone marrow and/or peripheral blood specimens must be submitted for immunophenotyping and selected molecular testing, and the establishment of BCR/ABL status; testing will be performed by the Eastern Cooperative Oncology Group (ECOG)-American College of Radiation Imaging Network (ACRIN) Leukemia Translational Research Laboratory (LTRL) and reported to the institution * NOTE: IT IS ESSENTIAL THAT A SAMPLE CONTAINING SUFFICIENT BLAST CELLS BE SUBMITTED TO THE ECOG-ACRIN LTRL AT BASELINE SO THAT SUBSEQUENT BONE MARROW ASSESSMENTS OF MRD CAN BE DONE; IN ADDITION TO ALLOWING THE LTRL TO CONFIRM ELIGIBILITY BASED ON BLAST CELL IMMUNOPHENOTYPE AND BCR/ABL STATUS, IT IS ALSO IMPERATIVE THAT AN ADEQUATE NUMBER OF BLASTS BE BANKED FOR ANALYSIS BY DRS MULLIGHAN/WILLMAN. WITHOUT ADEQUATE BASELINE SAMPLES, PATIENTS WILL NOT BE ABLE TO BE TREATED AND RANDOMIZED ON THIS PROTOCOL; IF A BONE MARROW ASPIRATE IS NOT AVAILABLE FOR LTRL SUBMISSION AT BASELINE, IT IS IMPERATIVE THAT DR PAIETTA FROM THE LTRL IS CALLED TO DISCUSS THE PERIPHERAL BLOOD WHITE BLOOD CELL (WBC) AND BLAST COUNT BEFORE BLOOD ONLY IS SUBMITTED * NOTE: Hydroxyurea can be given for up to 5 days prior to initiation of protocol therapy for control of leukocyte count and/or other symptoms or signs; corticosteroids can be given after pre-registration to the protocol and submission of baseline marrow and blood samples for control of leukocyte count and/or other symptoms or signs prior to initiation of protocol therapy if needed; if corticosteroids are given prior to pre-registration, contact the study chair as the patient may still be eligible to participate
3. INDUCTION ELIGIBILITY CRITERIA-STEP 1
4. Age >= 30 years and =< 70 years
5. New diagnosis of B lineage ALL must be made upon bone marrow or peripheral blood immunophenotyping; cases with myeloid antigen expression, but unequivocal lymphoid immunophenotype, are eligible
6. Negativity for the Philadelphia chromosome must be established by conventional cytogenetics, fluorescence in situ hybridization (FISH) and/or polymerase chain reaction (PCR); patients who are negative for the Philadelphia chromosome by conventional cytogenetics must have FISH or PCR performed for BCR/ABL to exclude occult translocations
7. Cytogenetic analysis must be performed from diagnostic bone marrow (preferred) or if adequate number of circulating blasts from peripheral blood; FISH testing for common B-lineage ALL abnormalities including t(9;22) (BCR/ABL1), t(12;21) (ETS-variant gene 6 [ETV6]/runt-related transcription factor 1 [RUNX1]), t(1;19) (pre-B-cell leukemia homeobox 1 [PBX1]/transcription factor 3 [TCF3]), +4,+10,+17, (centromeric [Cen]4/Cen10/Cen17), t(11q23;var), (myeloid/lymphoid or mixed lineage leukemia [MLL]), deletion (del)(9p) (cyclin-dependent kinase inhibitor 2A [CDKN2A]/Cen9), and t(14;var) (immunoglobulin heavy chain [IGH] is encouraged); if there are few or no circulating blasts and an adequate marrow sample cannot be obtained for cytogenetic analysis, the patient may still enroll on the trial
8. Serum direct bilirubin < 2 mg/dl or serum total bilirubin =< 3 (obtained =< 48 hours prior to registration); NOTE: the above stipulation for normal hepatic function does not apply if liver dysfunction is due to leukemia infiltration
9. Serum creatinine < 2 mg/dl (obtained =< 48 hours prior to registration); NOTE: the above stipulation for normal hepatic function does not apply if liver dysfunction is due to leukemia infiltration
10. Patient should be human leukocyte antigen (HLA) typed (A, B, C, DR and DQ) during induction therapy phase or a written explanation for not undergoing HLA typing on the flow sheet
11. Patients with known human immunodeficiency virus (HIV) infection are eligible if they meet all of the following criteria: * No history of acquired immune deficiency syndrome (AIDS)-related complications other than a history of low CD4+ T-cell count (< 200/mm^3) prior to initiation of combination antiretroviral therapy; on study CD4+ T-cell count may not be informative due to leukemia and should not be used as an exclusion criterion if low * Patient must be healthy on the basis of HIV disease with high likelihood of near normal life span were it not for the leukemia * Patient must have serum HIV viral load of < 200 copies/mm^3 * Patient must be on combination antiretroviral therapy with minimal pharmacokinetic interactions with study therapy and minimal overlapping clinical toxicity with protocol therapy * Patient must not be receiving protease inhibitors or once daily formulations containing cobicistat, stavudine, or on regimens containing stavudine or zidovudine * It is recommended to utilize a regimen of the integrase inhibitor, dolutegravir, combined with either disoproxil fumarate/emtricitabine or dolutegravir combined with tenofovir alafenamide/emtricitabine
12. Patient must have no history of recent myocardial infarction (within three months), uncontrolled congestive heart failure, or uncontrolled cardiac arrhythmia
13. Patient must have a normal cardiac ejection fraction by pretreatment multigated acquisition scan (MUGA) or echocardiogram within 4 weeks prior to registration (resting ejection fraction >= 40% or >= 5% increase with exercise), shortening fraction by echocardiogram >= 24%, or to within the normal range of values for the institution
14. Women must not be pregnant or breast-feeding due to administration of teratogenic chemotherapy and must not become pregnant or breastfeed during protocol therapy and for at least 3 months after protocol therapy; woman of childbearing potential must abstain from sexual activity or be willing to use 2 highly effective forms of contraception throughout protocol therapy and for at least an additional 3 months after the last dose of protocol-specified therapy; all females of childbearing potential must have a blood test or urine study within 2 weeks prior to registration to rule out pregnancy; a female of childbearing potential is any woman, regardless of sexual orientation or whether they have undergone tubal ligation, who meets the following criteria: has not undergone a hysterectomy or bilateral oophorectomy; or has not been naturally postmenopausal for at least 24 consecutive months (i.e., has had menses at any time in the preceding 24 consecutive months)
15. Men who have a female partner of childbearing potential must be willing to use 2 highly effective forms of contraception throughout protocol therapy and for at least an additional 3 months after the last dose of protocol-specified therapy; men who have a pregnant partner must be willing to use a condom during sexual activity throughout protocol therapy and for 3 months after the last dose of protocol-specified therapy
16. ECOG performance score 0-3
17. Patient must have given written informed consent
18. POST-INDUCTION THERAPY ELIGIBILITY CRITERIA (PRIOR TO INTENSIFICATION-STEP 2)
19. ECOG performance status 0-2
20. Patients must have achieved a CR or CRi
21. Patients who have achieved a CR or CRi must have maintained peripheral blood evidence of a CR or CRi
22. Patient must be CNS (cerebrospinal fluid [CSF]) negative for leukemia
23. Patients must have resolved any serious infectious complications related to induction
24. Any significant medical complications related to induction must have resolved
25. Serum creatinine =< 2.0 mg/dl (obtained =< 48 hours prior to registration)
26. Serum direct bilirubin < 2 mg/dL or serum total bilirubin =< 3 (obtained =< 48 hours prior to registration)
27. Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) < 3 x upper limit of normal (ULN) (obtained =< 48 hours prior to registration)
28. RANDOMIZATION OR ASSIGNMENT TO BLINATUMOMAB OR NO BLINATUMOMAB-STEP 3
29. Patients must have an ECOG performance status of 0-2
30. Patients must have maintained peripheral blood evidence of a remission and must have a CR or CRi, confirmed on restaging bone marrow (BM) aspirate and biopsy
31. Patients must have resolved any serious infectious complications related to therapy
32. Any significant medical complications related to therapy must have resolved
33. Direct or total bilirubin < 1.5 x ULN (unless related to Gilbert’s or Meulengracht’s syndrome); the values must be obtained within 48 hours prior to randomization
34. Serum creatinine < 1.5 x ULN; the values must be obtained within 48 hours prior to randomization
35. Bone marrow aspirates must be submitted for centralized minimal residual disease (MRD) assessment performed by the ECOG-ACRIN Leukemia Translational Research Laboratory
36. MRD results will be reported to the submitting institution * NOTE: FOR MRD ASSESSMENTS, AN ASPIRATE FROM A SEPARATE BONE MARROW ASPIRATION SITE MUST BE SUBMITTED (THE NEEDLE CAN BE RE-DIRECTED THROUGH THE SAME SKIN PUNCTURE SITE); ONLY SUBMIT ASPIRATES FROM THE FIRST PULL OF AN ASPIRATION SITE FOR MRD TESTING; DO NOT SUBMIT SAMPLES FROM THE SECOND OR THIRD PULL OF THE SAME ASPIRATION SITE * In B-lineage ALL, MRD levels in peripheral blood or from a dilute marrow aspiration can be 300% lower, on average, than those in bone marrow at a given time point; submitting a first pull from a separate aspiration site will ensure that MRD determinations used in randomization and trial interpretation are accurate ** NOTE: failure to submit bone marrow aspirates will result in a major violation at the time of an audit
37. CRITERIA FOR ALLOGENEIC TRANSPLANTATION
38. A suitable donor must be identified; there are no restrictions on donor type and can include a matched sibling, a matched or mismatched unrelated donor, a family haplotype matched donor or a cord blood donor (single or double)
39. Patients should meet the eligibility criteria for RANDOMIZATION OR ASSIGNMENT TO BLINATUMOMAB OR NO BLINATUMOMAB-STEP 3
40. Patients must be considered reliable enough to comply with the medication regimen and follow-up, and have social support necessary to allow this compliance
41. CRITERIA FOR MAINTENANCE THERAPY-STEP 4: Patients must have an ECOG performance status of 0-3
42. CRITERIA FOR MAINTENANCE THERAPY-STEP 4: Patients must have maintained peripheral blood evidence of a remission and must have a CR or CRi, confirmed on restaging BM aspirate and biopsy
43. CRITERIA FOR MAINTENANCE THERAPY-STEP 4: Patients must have resolved any serious infectious complications related to therapy
44. CRITERIA FOR MAINTENANCE THERAPY-STEP 4: Any significant medical complications related to therapy must have resolved