What is the genetic predisposition for ulcerative colitis (UC)?

Updated: Oct 17, 2017
  • Author: William A Rowe, MD; Chief Editor: BS Anand, MD  more...
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Answer

The genetic predisposition for ulcerative colitis appears to be lesser in magnitude than Crohn disease but consists of a set of genetic susceptibilities that shows significant overlap with Crohn disease. One genome-wide association study found a previously unknown susceptibility locus at ECM1 and also showed several risk loci that were common to both ulcerative colitis and Crohn disease. [26] Genes that confer risk for both diseases appear to influence the immune milieu of the intestine, whereas the genes that influence only Crohn disease appear to be involved mainly in autophagy. [26, 27]


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