04/05/2026 Mirum Pharmaceuticals’ Volixibat met its primary endpoint in a Phase 2b study in Patients with PSC Mirum Pharmaceuticals’ Volixibat met its primary endpoint in a Phase 2b study in Patients with PSC (Ref) Mirum Pharmaceuticals announced that the primary endpoint was met in the Phase 2b, VISTAS study, which evaluated volixibat (an IBAT inhibitor) in patients with primary sclerosong cholangitis (PSC). Volixibat demonstrated a statistically significant and clinically m