PMID- 21076979 OWN - NLM STAT- MEDLINE DCOM- 20110207 LR - 20211020 IS - 1432-1203 (Electronic) IS - 0340-6717 (Print) IS - 0340-6717 (Linking) VI - 129 IP - 2 DP - 2011 Feb TI - Conditional meta-analysis stratifying on detailed HLA genotypes identifies a novel type 1 diabetes locus around TCF19 in the MHC. PG - 161-76 LID - 10.1007/s00439-010-0908-2 [doi] AB - The human leukocyte antigen (HLA) class II genes HLA-DRB1, -DQA1 and -DQB1 are the strongest genetic factors for type 1 diabetes (T1D). Additional loci in the major histocompatibility complex (MHC) are difficult to identify due to the region's high gene density and complex linkage disequilibrium (LD). To facilitate the association analysis, two novel algorithms were implemented in this study: one for phasing the multi-allelic HLA genotypes in trio families, and one for partitioning the HLA strata in conditional testing. Screening and replication were performed on two large and independent datasets: the Wellcome Trust Case-Control Consortium (WTCCC) dataset of 2,000 cases and 1,504 controls, and the T1D Genetics Consortium (T1DGC) dataset of 2,300 nuclear families. After imputation, the two datasets have 1,941 common SNPs in the MHC, of which 22 were successfully tested and replicated based on the statistical testing stratifying on the detailed DRB1 and DQB1 genotypes. Further conditional tests using the combined dataset confirmed eight novel SNP associations around 31.3 Mb on chromosome 6 (rs3094663, p = 1.66 x 10(-11) and rs2523619, p = 2.77 x 10(-10) conditional on the DR/DQ genotypes). A subsequent LD analysis established TCF19, POU5F1, CCHCR1 and PSORS1C1 as potential causal genes for the observed association. FAU - Cheung, Yee Him AU - Cheung YH AD - Department of Electrical Engineering, Center for Computational Biology and Bioinformatics, Columbia University, 1300 S.W. Mudd, 500 West 120th Street, New York, NY 10027, USA. FAU - Watkinson, John AU - Watkinson J FAU - Anastassiou, Dimitris AU - Anastassiou D LA - eng GR - WT_/Wellcome Trust/United Kingdom GR - U01 DK062418/DK/NIDDK NIH HHS/United States GR - 076113/WT_/Wellcome Trust/United Kingdom PT - Journal Article PT - Meta-Analysis PT - Research Support, N.I.H., Extramural PT - Research Support, Non-U.S. Gov't DEP - 20101114 PL - Germany TA - Hum Genet JT - Human genetics JID - 7613873 RN - 0 (CCHCR1 protein, human) RN - 0 (Intracellular Signaling Peptides and Proteins) RN - 0 (Octamer Transcription Factor-3) RN - 0 (POU5F1 protein, human) RN - 0 (PSORS1C1 protein, human) RN - 0 (Proteins) RN - 0 (TCF19 protein, human) RN - 0 (Transcription Factors) SB - IM MH - Case-Control Studies MH - Diabetes Mellitus, Type 1/*genetics MH - Female MH - Humans MH - Intracellular Signaling Peptides and Proteins/genetics MH - Male MH - Octamer Transcription Factor-3/genetics MH - *Polymorphism, Single Nucleotide MH - Proteins/genetics MH - Transcription Factors/*genetics PMC - PMC3020293 EDAT- 2010/11/16 06:00 MHDA- 2011/02/08 06:00 PMCR- 2010/11/14 CRDT- 2010/11/16 06:00 PHST- 2010/09/10 00:00 [received] PHST- 2010/10/26 00:00 [accepted] PHST- 2010/11/16 06:00 [entrez] PHST- 2010/11/16 06:00 [pubmed] PHST- 2011/02/08 06:00 [medline] PHST- 2010/11/14 00:00 [pmc-release] AID - 908 [pii] AID - 10.1007/s00439-010-0908-2 [doi] PST - ppublish SO - Hum Genet. 2011 Feb;129(2):161-76. doi: 10.1007/s00439-010-0908-2. Epub 2010 Nov 14.