The purpose of this study is to determine whether RPC1063 is effective in the treatment of Ulcerative Colitis (UC).

The purpose of this study is to demonstrate the superiority of SER-109 vs placebo to reduce recurrence of CDI in adults up to 8 weeks after initiation of treatment.

The purpose of the trial is to determine the safety and efficacy of RPC1063 in patients diagnosed with moderate to severe ulcerative colitis.

The primary objectives of this study are to evaluate the safety and efficacy of filgotinib in the induction and maintenance treatment of moderately to severely active ulcerative colitis (UC) in participants who are biologic-naive and biologic-experienced.

The primary objective of this study is to observe the long-term safety of filgotinib in adults who have completed or met protocol specified efficacy discontinuation criteria in a prior Gilead-sponsored filgotinib treatment study in ulcerative colitis (UC).

The purpose of this study is to evaluate the safety and efficacy of Mirikizumab in participants with moderately to severely active ulcerative colitis (UC) who have had an inadequate response to, loss of response, or intolerant to conventional or biologic therapy for UC.

The purpose of this study is to evaluate the efficacy and safety of atezolizumab in combination with bevacizumab compared with sorafenib in participants with locally advanced or metastatic Hepatocellular Carcinoma (HCC) who have received no prior systemic treatment.

The primary objectives of this study are to evaluate the safety and efficacy of filgotinib during induction and maintenance treatment of moderately to severely active Crohn's disease (CD) in participants who are biologic-naive and biologic-experienced.

This non-interventional clinical study will be conducted to prospectively collect serial plasma samples from subjects with chronic HBV infection who are initiating antiviral therapy.

This is a Phase 2, open-label,randomized, multiple dose, varied administration regimen study with 2 parts (Parts A and B) in Subjects Infected with Chronic Hepatitis B Virus

This Registry is designed to provide long term clinical and virologic follow up in subjects who have achieved sustained virologic response (SVR) while participating in a previous Gilead sponsored Hepatitis C Virus (HCV) study.

The purpose of this study is to evaluate safety and efficacy of ozanimod in subjects with moderately to severely active Crohn's Disease.

The primary objectives of this study are to evaluate safety, efficacy and tolerability of treatment with sofosbuvir (Sovaldi®)/velpatasvir (Epclusa®; SOF/VEL) for 12 weeks in adults with chronic hepatitis C virus (HCV) infection who are on dialysis for End Stage Renal Disease (ESRD).

This is a randomized, multicenter, open-label trial of the combination regimen of MK-5172 (grazoprevir [GZR]) (100 mg), MK-3682 (450 mg) and MK-8408 (ruzasvir) (60 mg) for 16 weeks with ribavirin (RBV) or 24 weeks without RBV in cirrhotic (C) or non-cirrhotic (NC) hepatitis C virus (HCV) genotype

The primary objectives of this study are to evaluate the effect of Obeticholic Acid treatment compared to placebo on 1) histological improvement and 2) liver-related clinical outcomes in patients with non-cirrhotic nonalcoholic steatohepatitis (NASH) with liver fibrosis.

The primary objective of this study is to evaluate the safety and tolerability of GS-9674 in adults with primary biliary cholangitis (PBC).

The purpose of this study is to confirm the efficacy and safety of cenicriviroc (CVC) for the treatment of liver fibrosis in adult subjects with Nonalcoholic Steatohepatitis (NASH).

The purpose of this study is to identify the safety, tolerability and maximum-tolerated-dose of the oral formulation of SLC-0111 in combination with IV gemcitabine in those with metastatic pancreatic ductal cancer.