Last month, Mirum completed enrollment in its phase III EXPAND study evaluating Livmarli (maralixibat) for cholestatic pruritus in patients aged six months and older with rare liver diseases, including biliary atresia. The study’s primary goal is to assess the reduction in itch severity by week 20, with additional biomarkers as secondary endpoints, and results are expected in the fourth quarter of 2026. The study could support a label expansion for Livmarli, an oral IBAT inhibitor already approved for Alagille syndrome and certain progressive familial intrahepatic cholestasis patients. This has likely been driving the stock price gain for the company.