Hematopoietic Cell Transplantation for Children with Acute Lymphoblastic Leukemia in Second Complete Remission: Similar Outcomes in Recipients of Unrelated Marrow and Umbilical Cord Blood versus Marrow from HLA Matched Sibling Donors

Probability of (a) LFS and (b) relapse by HSC source. Legend: (a) probability of LFS by HSC source. The probability at 5 years was 0.41 in recipients of MSD, 0.57 in recipients of M-URD, 0.19 in recipients of MM-URD, and 0.43 in recipients of UCB. (b) Probability of relapse by HSC source. The probability at 5 years was 0.50 in recipients of MSD, 0.17 in recipients of M-URD, 0.06 in recipients of MM-URD, and 0.33 in recipients of UCB.