PMID- 24516896 OWN - NLM STAT- MEDLINE DCOM- 20140808 LR - 20140210 IS - 1523-6536 (Electronic) IS - 1083-8791 (Linking) VI - 20 IP - 1 DP - 2014 Jan TI - Impact on outcomes of human leukocyte antigen matching by allele-level typing in adults with acute myeloid leukemia undergoing umbilical cord blood transplantation. PG - 106-10 AB - This retrospective study analyzed the impact of directional donor-recipient human leukocyte antigen (HLA) disparity using allele-level typing at HLA-A, -B, -C, and -DRB1 in 79 adults with acute myeloid leukemia (AML) who received single-unit umbilical cord blood (UCB) transplant at a single institution. With extended high-resolution HLA typing, the donor-recipient compatibility ranged from 2/8 to 8/8. HLA disparity showed no negative impact on nonrelapse mortality (NRM), graft-versus-host (GVH) disease or engraftment. Considering disparities in the GVH direction, the 5-year cumulative incidence of relapse was 44% and 22% for patients receiving an UCB unit matched >/= 6/8 and < 6/8, respectively (P = .04). In multivariable analysis, a higher HLA disparity in the GVH direction using extended high-resolution typing (Risk ratio [RR] 2.8; 95% confidence interval [CI], 1.5 to 5.1; P = .0009) and first complete remission at time of transplantation (RR 2.1; 95% CI, 1.2 to 3.8; P = .01) were the only variables significantly associated with an improved disease-free survival. In conclusion, we found that in adults with AML undergoing single-unit UCBT, an increased number of HLA disparities at allele-level typing improved disease-free survival by decreasing the relapse rate without a negative effect on NRM. FAU - Sanz, Jaime AU - Sanz J FAU - Jaramillo, Francisco J AU - Jaramillo FJ FAU - Planelles, Dolores AU - Planelles D FAU - Montesinos, Pau AU - Montesinos P FAU - Lorenzo, Ignacio AU - Lorenzo I FAU - Moscardo, Federico AU - Moscardo F FAU - Martin, Guillermo AU - Martin G FAU - Lopez, Francisca AU - Lopez F FAU - Martinez, Jesus AU - Martinez J FAU - Jarque, Isidro AU - Jarque I FAU - de la Rubia, Javier AU - de la Rubia J FAU - Larrea, Luis AU - Larrea L FAU - Sanz, Miguel A AU - Sanz MA FAU - Sanz, Guillermo F AU - Sanz GF LA - eng PT - Clinical Trial PT - Journal Article PL - United States TA - Biol Blood Marrow Transplant JT - Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation JID - 9600628 RN - 0 (HLA Antigens) RN - 0 (Myeloablative Agonists) SB - IM MH - Adolescent MH - Adult MH - *Alleles MH - *Cord Blood Stem Cell Transplantation MH - Donor Selection MH - Female MH - Graft Survival MH - Graft vs Host Disease/prevention & control MH - HLA Antigens/genetics/*immunology MH - Histocompatibility Testing MH - Humans MH - Leukemia, Myeloid, Acute/*genetics/immunology/mortality/*therapy MH - Male MH - Middle Aged MH - Multivariate Analysis MH - Myeloablative Agonists/*therapeutic use MH - Recurrence MH - Remission Induction MH - Retrospective Studies MH - Survival Analysis MH - Tissue Donors MH - *Transplantation Conditioning MH - Transplantation, Homologous EDAT- 2014/02/12 06:00 MHDA- 2014/08/13 06:00 CRDT- 2014/02/12 06:00 PHST- 2014/02/12 06:00 [entrez] PHST- 2014/02/12 06:00 [pubmed] PHST- 2014/08/13 06:00 [medline] PST - ppublish SO - Biol Blood Marrow Transplant. 2014 Jan;20(1):106-10.