for people ages 18-70 (full criteria)
at San Francisco, California and other locations
study started
estimated completion



The primary objective of this study is to evaluate whether cilofexor reduces the risk of fibrosis progression among non-cirrhotic adults with primary sclerosing cholangitis (PSC).

Official Title

A Phase 3, Randomized, Double-Blind, Placebo-Controlled Study Evaluating the Safety, Tolerability, and Efficacy of GS-9674 in Non-Cirrhotic Subjects With Primary Sclerosing Cholangitis


Primary Sclerosing Cholangitis Cholangitis Cholangitis, Sclerosing Cilofexor


For people ages 18-70

Key Inclusion Criteria:

  • Diagnosis of large duct PSC
  • Liver biopsy at screening that is deemed acceptable for interpretation and demonstrates stage F0 - F3 fibrosis in the opinion of the central reader
  • Individual has the following laboratory parameters at the screening visit, as determined by the central laboratory:
  • Platelet count ≥ 150,000/mm3

  • Estimated glomerular filtration rate (eGFR) ≥ 30 milliliter/minute (mL/min), as calculated by the Cockcroft-Gault equation
  • ALT ≤ 8 x upper limit of the normal range (ULN)
  • Total bilirubin < 2 mg/dL, unless the individual is known to have Gilbert's syndrome or hemolytic anemia
  • International normalized ratio (INR) ≤ 1.4, unless due to therapeutic anticoagulation
  • Negative anti-mitochondrial antibody

Key Exclusion Criteria:

  • Current or prior history of any of the following:
  • Cirrhosis
  • Liver transplantation
  • Cholangiocarcinoma or hepatocellular carcinoma (HCC)
  • Ascending cholangitis within 30 days of screening
  • Presence of a percutaneous drain or biliary stent
  • Other causes of liver disease
  • Current or prior history of unstable cardiovascular disease
  • Current moderate to severely active inflammatory bowel disease (IBD)

Note: Other protocol defined Inclusion/Exclusion criteria may apply


  • University of California, San Francisco Liver Clinic accepting new patients
    San Francisco California 94143 United States
  • Stanford Hospital accepting new patients
    Palo Alto California 94025 United States


accepting new patients
Start Date
Completion Date
Gilead Sciences
Phase 3
Study Type
Last Updated