Alemtuzumab and Combination Chemotherapy in Treating Patients With Untreated Acute Lymphoblastic Leukemia

PRIMARY OBJECTIVES:

I. To determine the feasibility and toxicity profiles of escalating doses of Campath-1H (alemtuzumab) given subcutaneously during post-remission intensification treatment of adults with acute lymphoblastic leukemia (ALL).

II. To determine the disease-free survival (DFS) and overall survival (OS) when Campath-1H is used during post-remission intensification treatment of adults with ALL.

III. To determine whether antibody treatment with Campath-1H can further reduce minimal residual disease states in adult ALL.

IV. To obtain preliminary descriptive data on serum levels of Campath-1H during course IV, module D using limited pharmacokinetic sampling during the phase I and II components of the study.

V. To obtain feasibility data on the addition of imatinib to Cancer and Leukemia Group B (CALGB) induction and postremission combination chemotherapy for patients with Philadelphia chromosome positive (Ph+) ALL.

OUTLINE: This is a dose-escalation study of alemtuzumab.

COURSE 1 (module A): Patients receive allopurinol orally (PO) 4 times daily (QID) on days 1-14, cyclophosphamide* intravenously (IV) over 15-30 minutes on day 1, daunorubicin hydrochloride IV on days 1-3, vincristine sulfate IV on days 1, 8, 15, and 22, dexamethasone PO twice daily (BID) on days 1-7 and 15-21, asparaginase subcutaneously (SC) on days 5, 8, 11, 15, 18, and 22, and filgrastim SC on days 4-11. Patients who are Ph+ also receive imatinib mesylate PO on days 15-28.

*Note: Patients who are = 60 years old do not receive cyclophosphamide.

COURSE 2 (module B): Patients receive methotrexate intrathecally (IT) on day 1, cytarabine IV over 3 hours on days 1-3, dexamethasone as eye drops QID on days 1-4, trimethoprim-sulfamethoxazole PO BID 3 times weekly on days 1-29, and cyclophosphamide, asparaginase and filgrastim as in course 1. Patients who are Ph+ also receive imatinib mesylate PO on days 1-28.

COURSE 3 (module C): Patients receive vincristine sulfate IV on days 1, 15, and 29, methotrexate IV over 3 hours and IT on days 1, 15, and 19, methotrexate PO every 6 hours on days 1-2, 15-16, and 29-30, mercaptopurine PO on days 1-35, leucovorin calcium IV on days 2, 16, and 30, leucovorin calcium PO every 6 hours on days 3-4, and trimethoprim-sulfamethoxazole PO BID 3 times weekly on days 1-43. Patients who are Ph+ also receive imatinib mesylate PO on days 1-42.

COURSE 4 (module D): Patients receive alemtuzumab SC 3 times weekly for 4 weeks and begin acyclovir PO QID for 6 months (continuing through course 8).

• Phase I Cohort 1: 10 mg
• Phase I Cohort 2: 20 mg
• Phase I Cohort 3/Phase II MTD: 30 mg

COURSE 5 (module A): Patients repeat course 1, minus allopurinol.

COURSE 6 (module B): Patients repeat course 2.

COURSE 7 (module C): Patients repeat course 3.

COURSE 8: Patients receive mercaptopurine PO, vincristine sulfate IV on day 1, dexamethasone PO on days 1-5, methotrexate PO on days 1, 8, 15, and 22, and trimethoprim-sulfamethoxazole PO BID 3 days weekly. Patients who are Ph+ also receive imatinib mesylate PO on days 1-28. Courses repeat every 28 days for up to 24 months in the absence of disease progression or unacceptable toxicity.

After completion of study treatment, patients are followed up every 6 months for 10 years.

Inclusion criteria

• Unequivocal histologic diagnosis of precursor B or precursor T lymphoblastic leukemia (World Health Organization [WHO] classification), L1 or L2 ALL or acute undifferentiated leukemia (AUL) (French-American-British Cooperative group [FAB] Classification); Burkitt-type ALL (FAB L3, surface immunoglobulin [SIg]+) are excluded
• No prior treatment for leukemia with three permissible exceptions:

• Emergency leukapheresis II. Emergency treatment for hyperleukocytosis with hydroxyurea III. Cranial radiation therapy (RT) for central nervous system (CNS) leukostasis (one dose only)
• All patients must have a pre-treatment bone marrow or peripheral blood sample submitted for central immunophenotyping; only those patients who express CD52 >= 10% in the leukemia blast cell channel will be eligible to receive Campath-1H during module D, course IV