About this trial
This study is being done to determine how long it takes for the engraftment (recovery of blood cell counts) of umbilical cord stem cells and also how often engraftment of umbilical cord stem cells transplanted from an unrelated donor fails. Another purpose will be to document the rate of disease-free survival and the rate of relapse (a return of your disease or syndrome) as well as the incidence and severity of graft versus host disease (GvHD) following cord blood stem cell transplantation. GvHD is a complication of stem cell transplants in which white blood cells from the transplanted tissue (graft) attack the transplant recipient's body (host).
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Immunodeficiency disorders (e.g. Severe Combined Immunodeficiency, Wiskott-Aldrich Syndrome)
Congenital hematopoietic stem cell defects (e.g. Chediak-Higashi Syndrome, Congenital Osteopetrosis, Osteogenesis Imperfecta)
Metabolic disorders (e.g. Hurler's Syndrome)
Severe aplastic anemia
Disqualifiers
Availability of 10/10 or 9/10 HLA-matched related or unrelated donor within a reasonable timeframe dictated by the clinical urgency of the transplant
Autologous HSCT < 6 months prior to proposed UCB transplant
Pregnant or breast feeding
Current uncontrolled infection
Trial design
Cohort
Prospective
Treatments tested in this trial
Total Body Irradiation 1200 cGy
RadiationTotal Body Irradiation 1200 cGy in 8 fractions
Total Body Irradiation 200 cGy
RadiationTotal Body Irradiation 200 cGy in one fraction
Cyclophosphamide
Drug50 mg/kg or 60 mg/kg
Mesna
Drug50 mg/kg or 60 mg/kg plus 10% loading dose
Cord Blood Infusion
Procedure/SurgeryIntravenous infusion of cord blood stem cells
Busulfan
Drug0.8 mg/kg x 16 doses
Fludarabine
Drug30 mg/m2/day x 5 or 40 mg/m2/day x 5
Melphalan
Drug140 mg/m2
Treatment groups
Trial outcomes
Primary outcomes
Engraftment of ANC and Platelets
The date of engraftment of ANC is the first of 3 consecutive days of ANC of 500 or higher based on daily CBC and Differential Counts. The date of engraftment of platelets is the first of three consecutive days of platelet counts of 20,000 or higher in the absence of platelet transfusions for a t least 7 days prior.
Secondary outcomes
Rate of non-engraftment and of secondary graft failure
The percentage of patients who fail to initially engraft ANC will be tabulated as well as the percentage of patients who have primary engraftment of ANC but whose graft fails as evidenced by pancytopenia, failure of bone marrow function and loss of donor chimerism following initial engraftment of ANC.
Incidence of acute graft-versus-host disease
Routine physical exams, liver function tests, and clinical history of diarrhea and upper GI symptoms will be used to assess the presence of, the maximum severity of and the date of onset of Acute GvHD based on the criteria published by Przepioka et al., Bone Marrow Transplant 1995; 15(6):825-8 as used by the Center for International Blood \& Marrow Transplant Research. The percentage of patients developing symptoms of acute graft-versus-host disease will be tabulated.
Incidence of chronic graft-versus-host disease
Assess the presence of and the maximum severity of and the date of onset of chronic GvHD based on Sullivan KM, Blood 1981;57-267 as used by the Cneter for International Blood \& Marrow Transplant Research.
Disease-free survival
Document and update the length of time a subject survives without recurrence of the disease for which they were transplanted at 30 days, 100 days, 6 months and yearly following the infusion of cord blood stem cells for as long as the subjects survive and remain disease-free.
Sponsors and contacts
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