OCTNs: Will the Real IBD5 Gene Please Stand Up?
Overview
Authors
Affiliations
Crohn's disease and ulcerative colitis are inflammatory disorders of the gastrointestinal tract with a substantial heritable component. The IBD5 region on chromosome 5q31 is one of only two loci widely confirmed to be associated with Crohn's disease in multiple independent cohorts. Although many populations have demonstrated association with IBD5, there remains uncertainty as to the causal variant within the region. A recent report identified polymorphisms in SLC22A4 (OCTN1) and SLC22A5 (OCTN2) as being responsible for the IBD5 association, however, these findings have not been replicated. This review discusses the data evaluating the IBD5 locus and the OCTN genes and their relationship to inflammatory bowel disease. Several other genes, including IRF1 and P4HA2 may be equally as likely to contain the IBD5 causal variant as the OCTN genes.
Detecting genome-wide directional effects of transcription factor binding on polygenic disease risk.
Reshef Y, Finucane H, Kelley D, Gusev A, Kotliar D, Ulirsch J Nat Genet. 2018; 50(10):1483-1493.
PMID: 30177862 PMC: 6202062. DOI: 10.1038/s41588-018-0196-7.
Role of genetics in the diagnosis and prognosis of Crohn's disease.
Tsianos E, Katsanos K, Tsianos V World J Gastroenterol. 2012; 17(48):5246-59.
PMID: 22219593 PMC: 3247688. DOI: 10.3748/wjg.v17.i48.5246.
Grube M, Ameling S, Noutsias M, Kock K, Triebel I, Bonitz K Am J Pathol. 2011; 178(6):2547-59.
PMID: 21641380 PMC: 3124333. DOI: 10.1016/j.ajpath.2011.02.020.
Human genetic factors and respiratory syncytial virus disease severity.
Miyairi I, DeVincenzo J Clin Microbiol Rev. 2008; 21(4):686-703.
PMID: 18854487 PMC: 2570150. DOI: 10.1128/CMR.00017-08.
The 5q31 variants associated with psoriasis and Crohn's disease are distinct.
Li Y, Chang M, Schrodi S, Callis-Duffin K, Matsunami N, Civello D Hum Mol Genet. 2008; 17(19):2978-85.
PMID: 18614543 PMC: 2536504. DOI: 10.1093/hmg/ddn196.