Metabolic dysfunction-associated steatohepatitis (MASH) is characterized by lipid accumulation in the liver and inflammation. Sterol O-acyltransferase 2 (SOAT2) is a key enzyme in intestinal absorption and hepatic secretion of cholesterol. PRD Therapeutics Inc. has developed PRD-001, a selective SOAT2 inhibitor currently in phase I trials for MASH.