Acute Leukemias, Chronic Leukemias, Juvenile Myelomonocytic Leukemia, Myelodysplastic Syndrome
Conditions
Keywords
Stem-cells, Transplantation, Busulfex, Cyclophosphamide, Total-Body-Ittadiation
Brief summary
Long-term follow-up studies have demonstrated significant late toxicities of total body irradiation (TBI), which are most marked in children radiated at a young age. Growth failure, decline in cognitive function, and endocrine abnormalities have all been described. Good outcomes can be achieved with alkylating agents only as a preparative regimen. This plan will use a combination of busulfan and cyclophosphamide (Bu/Cy) with or without antithymocyte globulin (ATG) to reduce the late toxicities of therapy that includes TBI.
Interventions
Conditioning regimen: Cyclophosphamide 50mg/kg/day for 4 days + Busulfan 0.8-1.0mg/kg/day for 4 days.
Sponsors
Study design
Eligibility
Inclusion criteria
* Suitable cord blood from matched unrelated or related donor. * Cardiac (Echo/EKG): shortening fraction ≥ 27% * Electrolytes within normal CCHMC limits. * Pulmonary function tests: DLCO ≥ 50% * Renal: creatinine clearance/GFR ≥ 60 ml/minute/1.73m2 * Lumbar puncture: no leukemic infiltrate. * CBC: ANC ≥ 1000ml and unsupported platelet count of ≥ 50,000/ml * Documented HSV and CMV titers, Hepatitis B surface antigen, Hepatitis C by serology, HIV by serology: all negative. * Hepatic transaminases \< 2.5x normal; Total bilirubin \< 2 mg/dl Patients who do not meet above organ function criteria (liver, cardiac, renal), due to the presence of a tumor compromising these organs, may have exception made for these criteria and remain eligible for treatment plan after consultation with Program Director of Blood and Marrow Transplant
Exclusion criteria
* Patients with neoplastic or non-neoplastic disease of any major organ system that would compromise their ability to withstand the pre-transplant conditioning regimen. * Patients with uncontrolled (culture or biopsy positive) infections requiring intravenous antivirals, antibiotics, or antifungals. Patients on prolonged antifungal therapy with a history of fungal infection should be considered for a non-myeloablative protocol. * Patients who are pregnant or lactating. Patients of childbearing potential must practice an effective method of birth control while participating on this treatment plan. * HIV seropositive patients
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Overall survival | Five years |
Secondary
| Measure | Time frame |
|---|---|
| Disease free survival | Five years |