PMID- 20628152 OWN - NLM STAT- MEDLINE DCOM- 20101105 LR - 20210206 IS - 1528-0020 (Electronic) IS - 0006-4971 (Linking) VI - 116 IP - 15 DP - 2010 Oct 14 TI - The impact of anti-HLA antibodies on unrelated cord blood transplantations. PG - 2839-46 LID - 10.1182/blood-2009-10-249219 [doi] AB - The majority of cord blood transplantations (CBTs) have human leukocyte antigen (HLA) disparities. We investigated the impact that patients' pretransplantation anti-HLA antibodies have on the outcome of CBTs. Testing for anti-HLA antibody and its specificity was performed retrospectively at the Japanese Red Cross Tokyo Blood Center with sensitive solid-phase antibody detection assays. Among 386 CBTs, which were first myeloablative stem cell transplantations for malignancies and used a single unit of cord blood, 89 tested positive. Among the antibody-positive group, the cord blood did not have the corresponding HLA type for the antibody in 69 cases (ab-positive), while 20 cases had specificity against the cord blood HLA (positive-vs-CB). Cumulative incidence of neutrophil recovery 60 days after transplantation was 83% (95% confidence interval [CI], 79%-87%) for the antibody-negative group (ab-negative), 73% (95% CI, 61%-82%) for ab-positive, but only 32% (95% CI, 13%-53%) for the positive-vs-CB (P < .0001, Gray test). With multivariate analysis, the ab-positive showed significantly lower neutrophil recovery than the ab-negative (relative risk [RR] = 0.69, 95% CI, 0.49-0.96, p = .027). The positive-vs-CB had significantly lower neutrophil recovery (RR = 0.23, 95% CI, 0.09-0.56, P = .001) and platelet recovery (RR = 0.31, 95% CI, 0.12-0.81, P = .017) than the ab-negative. Patients' pretransplantation anti-HLA antibodies should be tested and considered in the selection of cord blood. FAU - Takanashi, Minoko AU - Takanashi M AD - Japanese Red Cross Tokyo Blood Center, Tokyo, Japan. mi-takanashi@tokyo.bc.jrc.or.jp FAU - Atsuta, Yoshiko AU - Atsuta Y FAU - Fujiwara, Koki AU - Fujiwara K FAU - Kodo, Hideki AU - Kodo H FAU - Kai, Shunro AU - Kai S FAU - Sato, Hiroyuki AU - Sato H FAU - Kohsaki, Masatoshi AU - Kohsaki M FAU - Azuma, Hiroshi AU - Azuma H FAU - Tanaka, Hidenori AU - Tanaka H FAU - Ogawa, Atsuko AU - Ogawa A FAU - Nakajima, Kazunori AU - Nakajima K FAU - Kato, Shunichi AU - Kato S LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100713 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Antigens, CD34) RN - 0 (HLA Antigens) RN - 0 (Isoantibodies) SB - IM MH - Adolescent MH - Adult MH - Aged MH - Antigens, CD34/metabolism MH - Child MH - Child, Preschool MH - *Cord Blood Stem Cell Transplantation/adverse effects MH - Female MH - Graft vs Host Disease/etiology/immunology MH - HLA Antigens/*immunology MH - Hematologic Neoplasms/blood/*immunology/mortality/*therapy MH - Humans MH - Infant MH - Infant, Newborn MH - Isoantibodies/*blood MH - Japan/epidemiology MH - Leukocyte Count MH - Male MH - Middle Aged MH - Multivariate Analysis MH - Neutrophils MH - Recurrence MH - Retrospective Studies MH - Risk Factors MH - Treatment Outcome MH - Young Adult EDAT- 2010/07/16 06:00 MHDA- 2010/11/06 06:00 CRDT- 2010/07/15 06:00 PHST- 2010/07/15 06:00 [entrez] PHST- 2010/07/16 06:00 [pubmed] PHST- 2010/11/06 06:00 [medline] AID - S0006-4971(20)31273-8 [pii] AID - 10.1182/blood-2009-10-249219 [doi] PST - ppublish SO - Blood. 2010 Oct 14;116(15):2839-46. doi: 10.1182/blood-2009-10-249219. Epub 2010 Jul 13.