Using the Icelandic genealogical database to define the familial risk of primary biliary cholangitis
Kristjan T. Örnolfsson, Sigurdur Olafsson, Ottar M. Bergmann, M. Eric Gershwin, Einar S. Björnsson – 21 November 2017 – Hereditary factors in primary biliary cholangitis (PBC) have been well defined in genome‐wide association studies, but there are few direct data available that define the relative risk (RR) for family members with an affected proband. An increased risk in first‐degree relatives has been demonstrated in a variety of studies, but data have been lacking on further detailed associations for subsequent generations.