PMID- 23053960 OWN - NLM STAT- MEDLINE DCOM- 20130409 LR - 20211021 IS - 1573-4978 (Electronic) IS - 0301-4851 (Linking) VI - 39 IP - 12 DP - 2012 Dec TI - Genome-wide pathway analysis of genome-wide association studies on systemic lupus erythematosus and rheumatoid arthritis. PG - 10627-35 LID - 10.1007/s11033-012-1952-x [doi] AB - The aim of this study was to explore candidate single nucleotide polymorphisms (SNPs) and candidate mechanisms of systemic lupus erythematosus (SLE) and rheumatoid arthritis (RA). Two SLE genome-wide association studies (GWASs) datasets were included in this study. Meta-analysis was conducted using 737,984 SNPs in 1,527 SLE cases and 3,421 controls of European ancestry, and 4,429 SNPs that met a threshold of p < 0.01 in a Korean RA GWAS dataset was used. ICSNPathway (identify candidate causal SNPs and pathways) analysis was applied to the meta-analysis results of the SLE GWAS datasets, and a RA GWAS dataset. The most significant result of SLE GWAS meta-analysis concerned rs2051549 in the human leukocyte antigen (HLA) region (p = 3.36E-22). In the non-HLA region, meta-analysis identified 6 SNPs associated with SLE with genome-wide significance (STAT4, TNPO3, BLK, FAM167A, and IRF5). ICSNPathway identified five candidate causal SNPs and 13 candidate causal pathways. This pathway-based analysis provides three hypotheses of the biological mechanism involved. First, rs8084 and rs7192 --> HLA-DRA --> bystander B cell activation. Second, rs1800629 --> TNF --> cytokine network. Third, rs1150752 and rs185819 --> TNXB --> collagen metabolic process. ICSNPathway analysis identified three candidate causal non-HLA SNPs and four candidate causal pathways involving the PADI4, MTR, PADI2, and TPH2 genes of RA. We identified five candidate SNPs and thirteen pathways, involving bystander B cell activation, cytokine network, and collagen metabolic processing, which may contribute to SLE susceptibility, and we revealed candidate causal non-HLA SNPs, genes, and pathways of RA. FAU - Lee, Young Ho AU - Lee YH AD - Division of Rheumatology, Department of Internal Medicine, Korea University Anam Hospital, Korea University College of Medicine, 126-1, 5-ga, Anam-dong, Seongbuk-gu, Seoul, 136-705, Korea. lyhcgh@korea.ac.kr FAU - Bae, Sang-Cheol AU - Bae SC FAU - Choi, Sung Jae AU - Choi SJ FAU - Ji, Jong Dae AU - Ji JD FAU - Song, Gwan Gyu AU - Song GG LA - eng PT - Journal Article PT - Meta-Analysis PT - Research Support, Non-U.S. Gov't DEP - 20121007 PL - Netherlands TA - Mol Biol Rep JT - Molecular biology reports JID - 0403234 RN - 0 (HLA Antigens) SB - IM MH - Arthritis, Rheumatoid/*genetics/immunology MH - Databases, Genetic MH - *Genetic Predisposition to Disease MH - *Genome-Wide Association Study MH - HLA Antigens/genetics MH - Humans MH - Linkage Disequilibrium/genetics MH - Lupus Erythematosus, Systemic/*genetics MH - Polymorphism, Single Nucleotide/genetics MH - Signal Transduction/*genetics EDAT- 2012/10/12 06:00 MHDA- 2013/04/10 06:00 CRDT- 2012/10/12 06:00 PHST- 2011/12/08 00:00 [received] PHST- 2012/10/01 00:00 [accepted] PHST- 2012/10/12 06:00 [entrez] PHST- 2012/10/12 06:00 [pubmed] PHST- 2013/04/10 06:00 [medline] AID - 10.1007/s11033-012-1952-x [doi] PST - ppublish SO - Mol Biol Rep. 2012 Dec;39(12):10627-35. doi: 10.1007/s11033-012-1952-x. Epub 2012 Oct 7.