PMID- 20018024 OWN - NLM STAT- PubMed-not-MEDLINE DCOM- 20111110 LR - 20211020 IS - 1753-6561 (Electronic) IS - 1753-6561 (Linking) VI - 3 Suppl 7 IP - Suppl 7 DP - 2009 Dec 15 TI - On the association between rheumatoid arthritis and classical HLA class I and class II alleles predicted from single-nucleotide polymorphism data. PG - S33 AB - Using single-nucleotide polymorphisms (SNPs), we sought to predict classical class I and class II human leukocyte antigen (HLA) alleles, and test for their associations with rheumatoid arthritis (RA) in the North American Rheumatoid Arthritis Consortium sample of cases and controls, genotyped on the Illumina HumanHap550 BeadChip. We use publicly available databases of SNP data and HLA data to find SNPs or SNP-haplotypes to be used as surrogates for each HLA allele. To reduce the confounding effects of linkage disequilibrium with the HLA-DRB1 locus, we tested for the association conditional on the presence or absence of a shared epitope allele on the same haplotype as the target HLA allele. Using SNP surrogates, we find that components of the DQ8 serotype (DQA1*0301:DQB1*0302) are associated with RA, irrespective of the presence or absence of a shared epitope allele on their respective haplotypes. Knowledge of the haplotype structure in the HLA region is still necessary for better interpretation of the results. FAU - Lemire, Mathieu AU - Lemire M AD - Ontario Institute for Cancer Research, 101 College Street, Suite 800, MaRS Centre, South Tower, Toronto, ON M5G0A3 Canada. mathieu.lemire@oicr.on.ca. LA - eng GR - R01 GM031575/GM/NIGMS NIH HHS/United States GR - R01 GM031575-28/GM/NIGMS NIH HHS/United States PT - Journal Article DEP - 20091215 PL - England TA - BMC Proc JT - BMC proceedings JID - 101316936 PMC - PMC2795931 EDAT- 2009/12/19 06:00 MHDA- 2009/12/19 06:01 PMCR- 2009/12/15 CRDT- 2009/12/19 06:00 PHST- 2009/12/19 06:00 [entrez] PHST- 2009/12/19 06:00 [pubmed] PHST- 2009/12/19 06:01 [medline] PHST- 2009/12/15 00:00 [pmc-release] AID - 1753-6561-3-S7-S33 [pii] AID - 10.1186/1753-6561-3-s7-s33 [doi] PST - epublish SO - BMC Proc. 2009 Dec 15;3 Suppl 7(Suppl 7):S33. doi: 10.1186/1753-6561-3-s7-s33.