PMID- 17378697 OWN - NLM STAT- MEDLINE DCOM- 20070404 LR - 20220408 IS - 1549-1676 (Electronic) IS - 1549-1277 (Print) IS - 1549-1277 (Linking) VI - 4 IP - 1 DP - 2007 Jan TI - MHC haplotype matching for unrelated hematopoietic cell transplantation. PG - e8 LID - e8 AB - BACKGROUND: Current criteria for the selection of unrelated donors for hematopoietic cell transplantation (HCT) include matching for the alleles of each human leukocyte antigen (HLA) locus within the major histocompatibility complex (MHC). Graft-versus-host disease (GVHD), however, remains a significant and potentially life-threatening complication even after HLA-identical unrelated HCT. The MHC harbors more than 400 genes, but the total number of transplantation antigens is unknown. Genes that influence transplantation outcome could be identified by using linkage disequilibrium (LD)-mapping approaches, if the extended MHC haplotypes of the unrelated donor and recipient could be defined. METHODS AND FINDINGS: We isolated DNA strands extending across 2 million base pairs of the MHC to determine the physical linkage of HLA-A, -B, and -DRB1 alleles in 246 HCT recipients and their HLA-A, -B, -C, -DRB1, -DQB1 allele-matched unrelated donors. MHC haplotype mismatching was associated with a statistically significantly increased risk of severe acute GVHD (odds ratio 4.51; 95% confidence interval [CI], 2.34-8.70, p < 0.0001) and with lower risk of disease recurrence (hazard ratio 0.45; 95% CI, 0.22-0.92, p = 0.03). CONCLUSIONS: The MHC harbors genes that encode unidentified transplantation antigens. The three-locus HLA-A, -B, -DRB1 haplotype serves as a proxy for GVHD risk among HLA-identical transplant recipients. The phasing method provides an approach for mapping novel MHC-linked transplantation determinants and a means to decrease GVHD-related morbidity after HCT from unrelated donors. FAU - Petersdorf, Effie W AU - Petersdorf EW AD - Division of Clinical Research, Fred Hutchinson Cancer Research Center, Seattle, Washington, United States of America. epetersd@fhcrc.org FAU - Malkki, Mari AU - Malkki M FAU - Gooley, Ted A AU - Gooley TA FAU - Martin, Paul J AU - Martin PJ FAU - Guo, Zhen AU - Guo Z LA - eng GR - CA18029/CA/NCI NIH HHS/United States GR - P01 CA018029/CA/NCI NIH HHS/United States GR - AI33484/AI/NIAID NIH HHS/United States GR - P01 AI033484/AI/NIAID NIH HHS/United States GR - R01 CA100019/CA/NCI NIH HHS/United States GR - AI49213/AI/NIAID NIH HHS/United States GR - U24 AI049213/AI/NIAID NIH HHS/United States GR - CA100019/CA/NCI NIH HHS/United States PT - Journal Article PT - Research Support, N.I.H., Extramural PL - United States TA - PLoS Med JT - PLoS medicine JID - 101231360 RN - 0 (HLA-A Antigens) RN - 0 (HLA-B Antigens) RN - 0 (HLA-DR Antigens) RN - 0 (HLA-DRB1 Chains) SB - IM MH - Adolescent MH - Adult MH - Child MH - Child, Preschool MH - Female MH - Genetic Linkage MH - Graft vs Host Disease MH - HLA-A Antigens/genetics/immunology MH - HLA-B Antigens/genetics/immunology MH - HLA-DR Antigens/genetics/immunology MH - HLA-DRB1 Chains MH - Haplotypes/*genetics MH - *Hematopoietic Stem Cell Transplantation MH - Histocompatibility/*genetics/*immunology MH - Humans MH - Infant MH - Major Histocompatibility Complex/*genetics/*immunology MH - Male MH - Middle Aged MH - Mortality MH - Recurrence MH - Treatment Outcome PMC - PMC1796628 COIS- Competing Interests: EWP and ZG have applied for a US non-provisional 111(a) patent for the haplotyping method, serial number 10/843,985. The remaining authors have no conflict of interest. EDAT- 2007/03/24 09:00 MHDA- 2007/04/05 09:00 PMCR- 2007/01/30 CRDT- 2007/03/24 09:00 PHST- 2006/06/09 00:00 [received] PHST- 2006/11/06 00:00 [accepted] PHST- 2007/03/24 09:00 [pubmed] PHST- 2007/04/05 09:00 [medline] PHST- 2007/03/24 09:00 [entrez] PHST- 2007/01/30 00:00 [pmc-release] AID - 06-PLME-RA-0442R3 [pii] AID - 10.1371/journal.pmed.0040008 [doi] PST - ppublish SO - PLoS Med. 2007 Jan;4(1):e8. doi: 10.1371/journal.pmed.0040008.