PMID- 20335219 OWN - NLM STAT- MEDLINE DCOM- 20100719 LR - 20221207 IS - 1528-0020 (Electronic) IS - 0006-4971 (Linking) VI - 115 IP - 23 DP - 2010 Jun 10 TI - Impact of highly conserved HLA haplotype on acute graft-versus-host disease. PG - 4664-70 LID - 10.1182/blood-2009-10-251157 [doi] AB - Although the effects of human leukocyte antigen (HLA) locus matching on clinical outcome in unrelated hematopoietic stem cell transplantations have been characterized, the biologic implications of HLA haplotypes have not been defined. We demonstrated the genetic fixity of Japanese conserved extended haplotypes by multi-single nucleotide polymorphism analysis in 1810 Japanese donor-recipient pairs matching with HLA-A, -B, -C, -DRB1, and -DQB1 alleles. Three major Japanese conserved extended haplotypes (named HP-P1, HP-P2, and HP-P3) were essentially completely conserved at least in the 3.3-Mb HLA region from HLA-A to -DPB1, and extended far beyond HLA-A. The risk of acute graft-versus-host disease (GVHD) of these HLA haplotypes was assessed with multivariate Cox regression in 712 patients transplanted from HLA fully (HLA-A, B, C, DRB1, DQB1, and DPB1) matched unrelated donors. HP-P2 itself reduced the risk of grade 2 to 4 acute GVHD (hazard ratio [HR] = 0.63; P = .032 compared with HP-P2-negative), whereas HP-P3 tended to increase the risk (HR = 1.38; P = .07). Among 381 patients with HP-P1, HP-P1/P3 (HR = 3.35; P = .024) significantly increased the risk of acute GVHD compared with homozygous HP-P1. This study is the first to demonstrate that a genetic difference derived from HLA haplotype itself is associated with acute GVHD in allogeneic hematopoietic stem cell transplantation. FAU - Morishima, Satoko AU - Morishima S AD - Department of Hematology and Cell Therapy, Aichi Cancer Center Hospital, Nagoya, Japan. FAU - Ogawa, Seishi AU - Ogawa S FAU - Matsubara, Aiko AU - Matsubara A FAU - Kawase, Takakazu AU - Kawase T FAU - Nannya, Yasuhito AU - Nannya Y FAU - Kashiwase, Koichi AU - Kashiwase K FAU - Satake, Masahiro AU - Satake M FAU - Saji, Hiroo AU - Saji H FAU - Inoko, Hidetoshi AU - Inoko H FAU - Kato, Shunichi AU - Kato S FAU - Kodera, Yoshihisa AU - Kodera Y FAU - Sasazuki, Takehiko AU - Sasazuki T FAU - Morishima, Yasuo AU - Morishima Y CN - Japan Marrow Donor Program LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20100324 PL - United States TA - Blood JT - Blood JID - 7603509 RN - 0 (Histocompatibility Antigens Class I) SB - IM MH - Acute Disease MH - Adolescent MH - Adult MH - Aged MH - Aged, 80 and over MH - Asian People MH - Child MH - Child, Preschool MH - Female MH - *Genetic Loci MH - Genome-Wide Association Study MH - Graft vs Host Disease/*genetics/prevention & control MH - *Haplotypes MH - Hematologic Neoplasms/genetics/therapy MH - Hematopoietic Stem Cell Transplantation MH - Histocompatibility Antigens Class I/*genetics MH - Humans MH - Infant MH - Infant, Newborn MH - Japan MH - Male MH - Middle Aged MH - *Polymorphism, Single Nucleotide MH - Retrospective Studies MH - Risk Factors MH - Transplantation, Homologous EDAT- 2010/03/26 06:00 MHDA- 2010/07/20 06:00 CRDT- 2010/03/26 06:00 PHST- 2010/03/26 06:00 [entrez] PHST- 2010/03/26 06:00 [pubmed] PHST- 2010/07/20 06:00 [medline] AID - S0006-4971(20)34884-9 [pii] AID - 10.1182/blood-2009-10-251157 [doi] PST - ppublish SO - Blood. 2010 Jun 10;115(23):4664-70. doi: 10.1182/blood-2009-10-251157. Epub 2010 Mar 24.