Gut & MicrobiomeGenetic Testing Reshapes How We Diagnose and Treat Adult Cholestatic Liver Disease
Cholestatic liver disease — where bile flow is impaired, causing damaging buildup — has long been treated as a late-onset adult condition separate from rare childhood liver syndromes. New DNA sequencing research is blurring that line. This review from the University of Duisburg-Essen examines how genetic variants responsible for severe pediatric conditions like progressive familial intrahepatic cholestasis (PFIC) also appear in milder, adult-onset cholestatic disorders. The key genes involved — ABCB4, ABCB11, and ATP8B1 — are now recognized across a broad disease spectrum. Crucially, a new class of drugs called intestinal bile acid transporter inhibitors (IBATi), approved for pediatric PFIC, may offer real relief for adult patients suffering from cholestatic pruritus (severe itching). The review aims to help clinicians translate genetic findings into personalized treatment strategies.
