Intercept Pharmaceuticals, Inc., a clinical stage biopharmaceutical company developing novel therapeutics for chronic fibrotic and metabolic diseases, today announced the signing of a cooperative research and development agreement (CRADA) with the National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK) of the National Institutes of Health to conduct a double blind, multi-center, study to evaluate the effects of obeticholic acid in patients with nonalcoholic steatohepatitis (NASH).