Nonalcoholic steatohepatitis (NASH) is a leading cause of liver transplantation and many trials are underway to evaluate potential therapies. The farnesoid X receptor ligand obeticholic acid in NASH treatment trial evaluated the effects of obeticholic acid vs placebo on histologic response (defined as decrease in nonalcoholic fatty liver disease activity score [NAS] by ≥2, with no worsening of fibrosis); 45% of patients had a histologic response to obeticholic acid (25 mg) and 21% had a response to placebo (P<.01).