PWE-137 The epidemiology and outcome of biliary atresia in scotland 2002–2013

Introduction Biliary atresia (BA) is a rare and poorly understood liver disease of infancy that is fatal if not treated through early biliary drainage via the Kasai procedure. BA surgery was rationalised to three UK centres in 2002 following data supporting improved outcomes in institutions performing greater than five Kasai procedures per year.1We have previously shown that outcomes in Scottish children were worse than expected in the years following initial rationalisation.2We aimed to expand the post-rationalisation cohort of BA cases in Scotland to examine epidemiology and outcomes. Method Outcomes of the previously published 2002-2009 incident cohort2was first expanded. New incident cases of BA, with a Scottish postcode at birth and born between 2010-2013, were obtained using data from specialist nurse/team knowledge in the three Scottish regional paediatric gastroenterology networks. New data collection focussed on demographics, details of Kasai and outcomes (particularly 2 year transplant-free survival [2YTFS]). Accurate regional and national population data was obtained from the General Register Office for Scotland and statistics performed in R with Poisson regression analysis for incidence trends. Results 48 infants were initially identified, of whom 5 were excluded from outcome analysis (three with Kasai procedures performed in Edinburgh, one with less than 1 yr follow up post-Kasai and one child born outside Scotland). Three infants required immediate liver transplantation; 43 infants underwent Kasai. Median age at Kasai in the full cohort was 56 days (IQR 47-65) and showed significant improvement from 61 days in 2002-2009 to 51 days in 2010-2013 (p = 0.014). Of those with available data, 61% cleared their jaundice (bilirubin