Inotuzumab Ozogamicin and Combination Chemotherapy in Treating Patients With Acute Lymphoblastic Leukemia

Inotuzumab Ozogamicin and Combination Chemotherapy in Treating Patients With Acute Lymphoblastic Leukemia

Phase I/II Study of the Combination of Inotuzumab Ozogamycin (CMC-544) With Low-Intensity Chemotherapy in Patients With Acute Lymphoblastic Leukemia (ALL)

This phase I/II trial studies the side effects and best dose of inotuzumab ozogamicin and to see how well it works when given together with combination chemotherapy in treating patients with acute lymphoblastic leukemia. Inotuzumab ozogamicin is a monoclonal antibody, called inotuzumab, linked to a toxic agent called N-acetyl-gamma-calicheamicin dimethyl hydrazide (CalichDMH). Inotuzumab attaches to CD22 positive cancer cells in a targeted way and delivers CalichDMH to kill them. 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. 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. Giving inotuzumab ozogamicin together with combination chemotherapy may be a better treatment for acute lymphoblastic leukemia.

PRIMARY OBJECTIVES: I. Determine the maximum tolerated dose (MTD) of inotuzumab ozogamicin (inotuzumab ozogamycin) in combination with low-intensity chemotherapy in elderly patients (age 60 or older) with acute lymphoblastic leukemia (ALL). (Phase I) II. Evaluate the efficacy of inotuzumab ozogamycin in combination with low-intensity chemotherapy in elderly and unfit to receive intensive therapy patients with ALL. (Phase II) III. To evaluate the side effects of the treatment. (Phase II) IV. Evaluate the regimen efficacy in refractory-relapsed ALL. (Phase II) EXPLORATORY OBJECTIVES: I. To identify genomic alterations in adult ALL predictive for response and long-term outcomes with the combination of hyper-CVD (cyclophosphamide, dexamethasone, methotrexate, and cytarabine) + inotuzumab + blinatumomab. II. To evaluate the impact of next generation sequencing (NGS)-based minimal residual disease (MRD) assay on outcomes and to compare with standard flow cytometry MRD assays. OUTLINE: This is a phase I, dose-escalation study of inotuzumab ozogamicin followed by a phase II study. Patients are assigned to 1 of 3 arms. ARM I (UNTREATED): CYCLES 1, 3, 7, AND 9: Patients receive cyclophosphamide intravenously (IV) over approximately 3 hours twice daily (BID) on days 1-3; vincristine IV over 30 minutes on days 1 and 8; dexamethasone IV or orally (PO) on days 1-4 and 11-14; inotuzumab ozogamicin IV over approximately 1 hour on day 3 of cycle 1 and day 2 or 3 of cycle 3; methotrexate intrathecally (IT) on day 2 of cycles 1 and 3; and cytarabine IT on day 8 of cycles 1 and 3. Patients may also receive rituximab IV on days 1 and 8 of cycles 1 and 3. Cycles alternate every 3-4 weeks in the absence of disease progression or unacceptable toxicity. CYCLES 2, 4, 8, AND 10: Patients receive methotrexate IV over approximately 2 hours and then continuously over approximately 22 hours on day 1; cytarabine IV over approximately 3 hours BID on days 2-3; inotuzumab ozogamicin IV over approximately 1 hour on day 2 or 3 of cycles 2 and 4; cytarabine IT on day 5 of cycles 2 and 4; and methotrexate IT on day 8 of cycles 2 and 4. Patients may also receive rituximab IV on days 1 and 8 of cycles 2 and 4. Cycles alternate every 3-4 weeks in the absence of disease progression or unacceptable toxicity. CYCLES 5-8: Patients receive blinatumomab as a continuous intravenous infusion (CIVI) on days 1-29. Patients also receive dexamethasone IV over 15-30 minutes on day 1 and 3 of cycle 5 and then day 1 of cycles 6-8. Treatment repeats every 42 days for 4 cycles in the absence of disease progression or unacceptable toxicity. MAINTENANCE THERAPY: Patients receive mercaptopurine PO BID and methotrexate PO once weekly for 3 years. Patients also receive vincristine IV over 30 minutes once monthly and prednisone PO daily five times a month for 1 year. Patients receive blinatumomab CIVI on days 1-28 of cycles 4, 8, 12, and 16. Cycles repeat every 42 days for 3 years in the absence of disease progression or unacceptable toxicity. ARM II (RELAPSED/REFRACTORY): CYCLES 1, 3, AND 5: Patients receive cyclophosphamide IV over approximately 3 hours BID on days 1-3; vincristine IV over 30 minutes on day 1; rituximab IV over 2-6 hours on days 1 and 8 of cycles 1 and 3; dexamethasone IV or PO on days 1-4; inotuzumab ozogamicin IV over 1 hour on days 2 and 8; methotrexate IT on day 2 of cycles 1 and 3; cytarabine IT on day 8 of cycles 1 and 3; and blinatumomab CIVI on days 4-21. Cycles alternate every 4 weeks in the absence of disease progression or unacceptable toxicity. CYCLES 2, 4, AND 6: Patients receive methotrexate IV over 24 hours on day 1; cytarabine IV over approximately 3 hours BID on days 2-3; rituximab IV over 2-6 hours on days 1 and 8 of cycles 2 and 4; inotuzumab ozogamicin IV over 1 hour on days 2 and 8 of cycles 2 and 4; cytarabine IT on day 2 of cycles 2 and 4, methotrexate IT on day 8 of cycles 2 and 4; and blinatumomab CIVI on days 4-21. Cycles alternate every 4 weeks in the absence of disease progression or unacceptable toxicity. MAINTENANCE THERAPY: Patients receive mercaptopurine PO BID and methotrexate PO once weekly for 3 years. Patients also receive vincristine IV over 30 minutes once monthly and prednisone PO daily five times a month for 1 year. Patients receive blinatumomab CIVI on days 1-28 of cycles 4, 8, 12, and 16. Cycles repeat every 42 days for 3 years in the absence of disease progression or unacceptable toxicity. ARM III (70 YEARS AND OLDER): INDUCTION CYCLE (CYCLE 1): Patients receive dexamethasone IV or PO on days 1-4; vincristine IV over 30 minutes on day 1; inotuzumab ozogamicin IV over 1 hour on days 1 and 8 of cycle 1; blinatumomab CIVI on days 15-28. Patients may also receive rituximab IV on days 2 and 9. INTRATHECAL PROPHYLAXIS: Patients receive methotrexate IT alternating with cytarabine IT on days 2 and 8 of cycles 1 and 3, and cytarabine IT alternating with methotrexate IT on days 2 and 8 of cycles 2 and 4. Treatment repeats every 42 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. CONSOLIDATION (CYCLES 2-5): Patients receive blinatumomab CIVI on days 1-28; inotuzumab ozogamicin IV over 1 hour on days 1 and 8 of cycles 2-4. Patients may also receive rituximab IV on days 2 and 9 of cycles 2-4. Treatment repeats every 42 days for up to 4 cycles in the absence of disease progression or unacceptable toxicity. After completion of study treatment, patients are followed up at 30 days and every 4 months.

B Acute Lymphoblastic Leukemia With t(9;22)(q34.1;q11.2); BCR-ABL1, B Acute Lymphoblastic Leukemia, Philadelphia Chromosome Negative, Burkitt-Like Lymphoma With 11q Aberration, High Grade B-Cell Lymphoma With MYC and BCL2 and/or BCL6 Rearrangements, High Grade B-Cell Lymphoma, Not Otherwise Specified, Recurrent B Acute Lymphoblastic Leukemia, Recurrent Burkitt Lymphoma, Refractory B Acute Lymphoblastic Leukemia, Refractory Burkitt Lymphoma

Maximum tolerated dose of inotuzumab ozogamicin based on incidence of dose limiting toxicities (Phase I)

Defined as non-hematologic grade 3 or 4 toxicities during the first course. Toxicities will be monitored using the method of Thall, Simon, and Estey. Adverse events will be summarized and toxicity rate will be estimated with a 90% credible interval.

Bayesian time-to-event model will be used. Kaplan and Meier product limit method will be used to estimate the PFS along with the 95% confidence intervals for the median PFS. Univariate and multivariate Cox proportional hazards regression models will be used to identify prognostic factors.

The median and 1-year survival rate will be defined. Kaplan and Meier product limit method will be used to estimate the overall survival (OS) along with the 95% confidence intervals for the median OS. Univariate and multivariate Cox proportional hazards regression models will be used to identify prognostic factors.

Inclusion Criteria: Patients age 60 years or older with previously untreated ALL pre-B, Philadelphia chromosome (Ph-) negative or (Ph+) positive ALL Minimal prior therapy (less than 1 week of steroids, vincristine, and/or 1 dose of anthracycline or alkylating agents) are allowed. Patients unfit ≥ 18 - < 60 years of age with previously untreated ALL pre- B, Philadelphia chromosome (Ph-) negative or (Ph+) positive ALL (includes patients initiated on first cycle of hyper-CVAD before cytogenetics known. These patients could have received one or two cycles of chemotherapy with or without other TKIs and still eligible. These patients are defined as having at least one of the below comorbidities: ECOG performance status ≥ 2 Severe cardiac disorder (e.g., congestive heart failure requiring treatment, ejection fraction ≤ 50%, or chronic stable angina) Severe pulmonary disorder (e.g., DLCO ≤ 65% or FEV1 ≤ 65%) Creatinine clearance < 45 mL/min, and Hepatic disorder with total bilirubin > 1.5 x upper limit of normal If they achieved CR, they are assessable only for event-free and overall survival, or If they failed to achieve CR, they are assessable for CR, event-free, and overall survival Patients age 60 years and older unfit for intensive chemotherapy with one or more comorbidities (e.g., renal insufficiency, heart disease, cardio-vascular disease, uncontrolled hypertension, diabetes, respiratory problems, among others) and a PS of ≥ 1. All ages of Jehovah's witness are eligible. Zubrod performance status 0-3. Adequate liver function (bilirubin < 1.95 mg/dL and SGPT or SGOT < 3 x upper limit of normal [ULN], unless considered due to tumor), and renal function (estimated creatinine clearance ≥50 mL/min/1.73 m2). Even if organ function abnormalities are considered due to tumor, the upper limit for bilirubin is < 2.6 mg/dL and creatinine < 3 mg/dL. Provision of written informed consent. Patients in first remission are eligible. Patients with refractory-relapsed ALL, Burkitt lymphoma, Burkitt-like lymphoma with 11q aberration, high-grade B-cell lymphoma with MYC and BCL2 and/or BCL6 rearrangements, and high-grade B-cell lymphoma not otherwise specified with marrow involvementBof any age are eligible. Exclusion Criteria: Newly diagnosed Burkitt's Leukemia or Lymphoma, T-cell ALL or lymphoblastic lymphoma. Patient with active heart disease (NYHA class > 3 as assessed by history and physical examination). Patients with a cardiac ejection fraction (as measured by either MUGA or echocardiogram) < 40% are excluded. Patients with active hepatitis are excluded. Pregnant or breast-feeding women are excluded.

Shi Z, Zhu Y, Zhang J, Chen B. Monoclonal antibodies: new chance in the management of B-cell acute lymphoblastic leukemia. Hematology. 2022 Dec;27(1):642-652. doi: 10.1080/16078454.2022.2074704.

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