PMID- 23353119 OWN - NLM STAT- MEDLINE DCOM- 20130829 LR - 20240413 IS - 1523-6536 (Electronic) IS - 1083-8791 (Print) IS - 1083-8791 (Linking) VI - 19 IP - 4 DP - 2013 Apr TI - Partially mismatched transplantation and human leukocyte antigen donor-specific antibodies. PG - 647-52 LID - S1083-8791(13)00052-9 [pii] LID - 10.1016/j.bbmt.2013.01.016 [doi] AB - The presence of donor human leukocyte antigen (HLA)-specific antibodies (DSA) increases engraftment failure risk in partially HLA-mismatched, or HLA-haploidentical, allogeneic marrow (alloBMT) transplantation. As pre-existing sensitization to HLA antigens is not well characterized among candidates for HLA-haploidentical alloBMT, we retrospectively evaluated both the incidence and relative strength of DSA in this patient population. Based on correlations of solid-phase antibody assays on the Luminex (Luminex, Austin, TX) platform with actual crossmatch tests, DSA were characterized as weak for results that were consistent with negative flow cytometric crossmatch results or as moderate-to-strong for results consistent with positive flow cytometric or cytotoxicity crossmatches. We evaluated 296 alloBMT candidates; 111 (37.5%) were female. DSA were detected in 43 (14.5%) candidates, mostly among female candidates (42.9% female versus 12.5% male). Moderate-to-strong DSA strength was more frequently encountered when directed against haploidentical donors as compared with mismatched unrelated donors. DSA were most commonly detected in female patients directed against their children. Because the presence of DSA has been considered prohibitive for HLA-mismatched alloBMT, we additionally report a desensitization methodology used to reduce DSA to negative or weak levels, ie, levels well below those detectable in a flow cytometric crossmatch. Nine patients without other available donors underwent desensitization. Eight who reduced their DSA to negative or weak levels proceeded to alloBMT and achieved full donor engraftment. These data support routine DSA evaluation in all patients considered for mismatched alloBMT; however, for patients with no other viable options, desensitization to weak or negative DSA levels may afford the opportunity for successful transplantation. CI - Copyright (c) 2013 American Society for Blood and Marrow Transplantation. Published by Elsevier Inc. All rights reserved. FAU - Gladstone, Douglas E AU - Gladstone DE AD - Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins Medicine, Baltimore, MD 21287, USA. dgladst1@jhmi.edu FAU - Zachary, Andrea A AU - Zachary AA FAU - Fuchs, Ephraim J AU - Fuchs EJ FAU - Luznik, Leo AU - Luznik L FAU - Kasamon, Yvette L AU - Kasamon YL FAU - King, Karen E AU - King KE FAU - Brodsky, Robert A AU - Brodsky RA FAU - Jones, Richard J AU - Jones RJ FAU - Leffell, Mary S AU - Leffell MS LA - eng GR - P01 CA015396/CA/NCI NIH HHS/United States GR - P30 CA006973/CA/NCI NIH HHS/United States GR - P01 CA15396/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural DEP - 20130122 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 (Immunoglobulins, Intravenous) RN - 0 (Isoantibodies) RN - WM0HAQ4WNM (Tacrolimus) SB - IM MH - Adult MH - Aged MH - *Bone Marrow Transplantation MH - Child MH - *Desensitization, Immunologic MH - Female MH - Graft vs Host Disease/blood/*immunology/mortality MH - HLA Antigens/*immunology MH - Haplotypes MH - Histocompatibility Testing MH - Humans MH - Immunoglobulins, Intravenous/therapeutic use MH - Isoantibodies/*blood/immunology MH - Male MH - Middle Aged MH - Retrospective Studies MH - Sex Factors MH - Tacrolimus/therapeutic use MH - Transplantation, Homologous MH - Unrelated Donors PMC - PMC3768172 MID - NIHMS438442 COIS- Conflict of Interest Statement: There are no conflicts of interest to report. EDAT- 2013/01/29 06:00 MHDA- 2013/08/30 06:00 PMCR- 2014/04/01 CRDT- 2013/01/29 06:00 PHST- 2012/11/06 00:00 [received] PHST- 2013/01/17 00:00 [accepted] PHST- 2013/01/29 06:00 [entrez] PHST- 2013/01/29 06:00 [pubmed] PHST- 2013/08/30 06:00 [medline] PHST- 2014/04/01 00:00 [pmc-release] AID - S1083-8791(13)00052-9 [pii] AID - 10.1016/j.bbmt.2013.01.016 [doi] PST - ppublish SO - Biol Blood Marrow Transplant. 2013 Apr;19(4):647-52. doi: 10.1016/j.bbmt.2013.01.016. Epub 2013 Jan 22.