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Undergo allogeneic bone marrow, peripheral blood stem cell, or umbilical cord blood transplantation

allogeneic bone marrow transplantation

peripheral blood stem cell transplantation

umbilical cord blood transplantation

radiation therapy

Kirk Schultz

This phase II trial is studying how well combination chemotherapy with or without donor peripheral stem cell transplant works in treating children with acute lymphoblastic leukemia. Giving combination chemotherapy before a donor peripheral stem cell transplant helps stop the growth of cancer cells. It also helps stop the patient's immune system from rejecting the donor's stem cells. When the healthy stem cells from a donor are infused into the patient they may help the patient's bone marrow make stem cells, red blood cells, white blood cells, and platelets.

PRIMARY OBJECTIVES:

I. Determine the feasibility of treatment with intensified chemotherapy, in terms of toxicity and patient accrual, in children with very high-risk acute lymphoblastic leukemia.

II. Determine the feasibility and efficacy of following intensified chemotherapy with allogeneic hematopoietic stem cell transplantation in patients with HLA-matched related donors.

III. Determine the toxicity of imatinib mesylate in combination with intensified chemotherapy in Philadelphia chromosome-positive patients.

IV. Determine the event-free survival of patients treated with this regimen. V. Determine whether minimal residual disease (MDR) after induction therapy and prior to intensification therapy can predict relapse in these patients.

VI. Determine whether MDR after intensification is prognostically significant. VII. Determine whether gene expression patterns predict disease recurrence or response to imatinib mesylate.

OUTLINE: This is a multicenter study. This is also a dose-escalation study of imatinib mesylate in Philadelphia chromosome-positive (Ph+) patients. Patients are stratified according to Philadelphia chromosome (Ph) status (Ph-positive vs Ph-negative or indeterminate), hypodiploidy (yes vs no), MLL translocation (11q23) AND slow early response to prior induction therapy (yes vs no), and failed prior induction therapy (yes vs no).

Cohorts of 8-12 Ph+ patients receive escalating doses of imatinib mesylate, according to the guidelines for each treatment block of this study, until the maximum tolerated dose (MTD) for each treatment combination is determined. The MTD is defined as the dose preceding that at which 2 of 6 patients experience dose-limiting toxicity. An additional 35 patients are treated at the MTD.

CONSOLIDATION BLOCK 1: Patients receive etoposide IV over 1 hour followed by ifosfamide IV over 1.5 hours on days 1-5. Patients also receive methotrexate intrathecally on day 1 and filgrastim (G-CSF) subcutaneously (SC) on days 6-15 or until blood counts recover. Patients with CNS 2/3 at diagnosis also receive intrathecal triple therapy comprising methotrexate, hydrocortisone, and cytarabine (ITT) on days 8 and 15. Ph+ patients in cohorts 3, 4, and 5 receive oral imatinib mesylate on days 1-21. Within 4 days of starting consolidation therapy, patients with biopsy-proven testicular leukemia undergo radiotherapy daily for 12 days.

CONSOLIDATION BLOCK 2: Patients receive high-dose methotrexate IV over 24 hours and ITT on day 1 followed by high-dose cytarabine IV over 3 hours, every 12 hours on days 2 and 3. Patients also receive leucovorin calcium IV or orally every 6 hours for 3 doses beginning on day 2, and G-CSF SC on days 4-13 or until blood counts recover. Ph+ patients in cohorts 2, 3, 4, and 5 receive oral imatinib mesylate as in consolidation block 1. Patients undergoing allogeneic hematopoietic stem cell transplantation (HSCT) proceed to preparative chemotherapy. All other patients proceed to reinduction block 1.

REINDUCTION BLOCK 1: Patients receive vincristine IV on days 1, 8, and 15; daunorubicin IV on days 1 and 2; cyclophosphamide IV over 30 minutes, every 12 hours on days 3 and 4; pegaspargase intramuscularly (IM) on day 4; and ITT on days 1 and 15. Patients also receive oral dexamethasone twice daily on days 1-7 and 15-21 and G-CSF SC on days 5-14 or until blood counts recover. Ph+ patients in cohorts 2, 4, and 5 receive imatinib mesylate as in consolidation block 1.

INTENSIFICATION BLOCK 1: Patients receive high-dose methotrexate IV over 24 hours on days 1 and 15 and ITT on days 1 and 22. Patients also receive leucovorin calcium IV or orally every 6 hours for 3 doses beginning on days 2 and 16. Patients receive etoposide IV over 2 hours followed by cyclophosphamide IV over 30 minutes on days 22-24; G-CSF SC on days 27-36 or until blood counts recover; high-dose cytarabine IV over 3 hours, every 12 hours on days 43 and 44; and asparaginase IM on day 44. Ph+ patients in cohorts 1 and 4 receive oral imatinib mesylate on days 43-63, and patients in cohort 5 receive oral imatinib mesylate on days 1-56.

REINDUCTION BLOCK 2: Patients receive vincristine, daunorubicin, cyclophosphamide, pegaspargase, dexamethasone, and G-CSF as in reinduction block 1. Patients also receive ITT on days 1 and 15. Ph+ patients receive imatinib mesylate as in reinduction block 1.

INTENSIFICATION BLOCK 2: Patients receive methotrexate, leucovorin calcium, etoposide, cyclophosphamide, filgrastim, cytarabine, and asparaginase as in intensification block 1. Ph+ patients receive imatinib mesylate as in intensification block 1.

MAINTENANCE 1: Patients receive high-dose methotrexate IV and leucovorin calcium as in consolidation block 2. Patients also receive ITT and vincristine IV on days 1 and 29; oral dexamethasone twice daily on days 1-5 and 29-33; oral methotrexate on days 8, 15, and 22; oral mercaptopurine on days 8-28; etoposide IV over 2 hours followed by cyclophosphamide IV over 30 minutes on days 29-33; and G-CSF SC on days 34-43. Ph+ patients in cohorts 1-4 receive oral imatinib mesylate on days 29-49 and patients in cohort 5 receive oral imatinib mesylate on days 1-56. Treatment repeats every 8 weeks for 4 courses in the absence of disease progression or unacceptable toxicity.

MAINTENANCE 2: Patients receive vincristine and dexamethasone as in maintenance 1. Beginning on day 1, patients undergo cranial radiotherapy once daily, 5 days a week, for approximately 2 weeks. Patients also receive oral methotrexate on days 8, 15, 22, 29, 36, 43, and 50 and oral mercaptopurine on days 11-56. Ph+ patients in cohorts 1-4 receive oral imatinib mesylate on days 1-21 and 29-49, and patients in cohort 5 receive oral imatinib mesylate on days 1-56.

MAINTENANCE 3: Patients receive vincristine and dexamethasone as in maintenance 2. Patients also receive oral methotrexate on days 1, 8, 15, 22, 29, 36, 43, and 50; and oral mercaptopurine on days 1-56. Ph+ patients receive imatinib mesylate as in maintenance 2. Treatment repeats every 8 weeks for 7 courses (12 courses total in maintenance 1, 2, and 3) in the absence of disease progression or unacceptable toxicity.

Patients may undergo allogeneic HSCT after consolidation block 2 if there is an available HLA-DR matched or HLA-A or -B matched or 1 antigen mismatched relative donor.

Patients with CNS leukemia undergo cranial radiotherapy 3 times daily on days -10 to -8. All patients undergo radiotherapy twice daily on days -7 to -5 and receive etoposide IV on day -4 and cyclophosphamide IV on days -3 and -2. Patients undergo allogeneic bone marrow, peripheral blood stem cell, or umbilical cord blood transplantation on day 0. Patients receive cyclosporine IV beginning on day -1 and continuing every 12 hours, switching to oral administration when possible, until day 60 and tapering thereafter. Patients also receive methotrexate on days 1, 3, and 6. Beginning 16-24 weeks after transplantation, Ph+ patients receive oral imatinib mesylate once daily for 24 weeks.

Patients are followed every 4-8 weeks for 1 year, every 3 months for 1 year, every 6 months for 1 year, and then annually thereafter. Patients undergoing HSCT are followed weekly for the first year.

Combination Chemotherapy With or Without Peripheral Stem Cell Transplant in Treating Children With Acute Lymphoblastic Leukemia

A Children's Oncology Group Pilot Study for the Treatment of Very High Risk Acute Lymphoblastic Leukemia in Children and Adolescents (Imatinib (STI571, GLEEVEC) NSC#716051)

As a target goal, we wish to enroll at least 80% of the potential available patients. The accrual duration for this pilot study will be based on accruing adequate numbers to complete the dose escalation study in the Ph+ subset. The planned study accrual duration should be approximately 1.75 years.

The use of imatinib as given in combination with other agents in a particular cohort will be considered feasible initially if 5 or more of the first 6 evaluable patients complete the phase(s) without evidence of grade 3 or 4 targeted toxicities.

National Cancer Institute (NCI)

Study title	NCT ID	Conditions	Interventions	Eligibility	Organization	Link
Combination Chemotherapy With or Without Peripheral Stem Cell Transplant in Treating Children With Acute Lymphoblastic Leukemia	NCT00022737	Childhood Acute... Recurrent Child...	filgrastim asparaginase cyclophosphamid... cyclosporine cytarabine daunorubicin hy... dexamethasone etoposide ifosfamide imatinib mesyla... leucovorin calc... mercaptopurine ... methotrexate pegaspargase vincristine sul... allogeneic bone... peripheral bloo... umbilical cord ... radiation thera...	1 Year - 21 Years	National Cancer Institute (NCI)
Combination Chemotherapy With or Without Peripheral Stem Cell Transplant in Treating Children With Acute Lymphoblastic Leukemia	NCT00022737	Childhood Acute... Recurrent Child...	filgrastim asparaginase cyclophosphamid... cyclosporine cytarabine daunorubicin hy... dexamethasone etoposide ifosfamide imatinib mesyla... leucovorin calc... mercaptopurine ... methotrexate pegaspargase vincristine sul... allogeneic bone... peripheral bloo... umbilical cord ... radiation thera...	1 Year - 21 Years	National Cancer Institute (NCI)

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