This phase II trial studies how well giving an umbilical cord blood transplant together with
cyclophosphamide, fludarabine, and total-body irradiation (TBI) works in treating patients
with hematologic disease. Giving chemotherapy, such as cyclophosphamide and fludarabine, and
TBI before a donor umbilical cord blood transplant helps stop the growth of cancer and
abnormal cells and 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.
Sometimes the transplanted cells from a donor can make an immune response against the body's
normal cells. Giving cyclosporine and mycophenolate mofetil after transplant may stop this
from happening.
Description
OUTLINE: Patients are assigned to 1 of 2 arms.
ARM I: Patients receive myeloablative conditioning comprising fludarabine intravenously (IV)
over 30 minutes on days -8 to -6, cyclophosphamide IV on days -7 and -6, and undergo
high-dose TBI twice daily (BID) on days -4 to -1. Patients then undergo single- or
double-unit UCBT on day 0.
ARM II: Patients receive myeloablative conditioning comprising fludarabine IV over 30-60
minutes on days -6 to -2, cyclophosphamide IV on day -6, thiotepa IV over 2-4 hours on days
-5 and -4, and middle-intensity TBI once daily (QD) on days -2 and -1. Patients then undergo
single- or double-unit UCBT on day 0.
Patients receive GVHD prophylaxis comprising cyclosporine IV over 1 hour every 8 or 12 hours,
then cyclosporine orally (PO) (if tolerated), on days -3 to 100 with taper on day 101.
Patients also receive mycophenolate mofetil IV every 8 hours on days 0 to 7 and then PO (if
tolerated) three times daily (TID) on days 8-30. Mycophenolate mofetil is tapered to BID on
day 30 or 7 days after engraftment if there is no acute GVHD, and then tapered over 2-3 weeks
beginning on day 45 (or 15 days after engraftment if engraftment occurred > day 30) after
engraftment if there continues to be no evidence of acute GVHD.
After completion of study treatment, patients are followed up at 6 months, 1 year, and 2
years.
If you are confirmed eligible after full screening, you will be required to understand and sign the informed consent if you decide to enroll in the study. Once enrolled you may be asked to make scheduled visits over a period of time.
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