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Primary biliary cholangitis is an autoimmune liver disease. Here, the authors show that variants in interleukin genes which potentially deregulate their expression are associated with this condition, and suggest that the IL21 signalling pathway may have a role in disease aetiology.
Results from genetic studies of primary sclerosing cholangitis have identified a number of risk loci associated with the disease. Here, Jiang and Karlsen comprehensively discuss the identity and function of risk genes, the potential roles they have in pathogenesis and future research efforts.
In 2016, obeticholic acid became the first new licensed therapy for primary biliary cholangitis in >20 years. This therapeutic came at a time of improved disease understanding from biliary and immunological mechanistic insights.
Although a colonoscopy for the evaluation of IBD and the surveillance of colitis-associated neoplasia should be performed at the time of the diagnosis of primary sclerosing cholangitis (PSC), the results from a new study suggest that screening for PSC with magnetic resonance cholangiography in patients with long-term IBD might be needed.