The purpose of this study is to compare ridinilazole as a novel antimicrobial for Clostridium difficile Infection (CDI) with the goal of achieving comparable cure rates to standard of care, but reducing rates of recurrent disease.

This is a registry study to evaluate the long-term safety and effectiveness of adalimumab in patients with moderately to severely active UC who are treated as recommended in the product label.

To evaluate the real-life effect of adalimumab on psychological distress/depression symptoms in moderate-to-severe Ulcerative Colitis (UC) patients. 

The purpose of this study is to assess safety and efficacy of SER-109 in reducing recurrence of Clostridium difficile infection (CDI) in adults who had a CDI recurrence within 8 weeks after receipt of SER-109 or Placebo in Study SERES-012.

The purpose of this study is to test the safety and efficacy of RBX2660 in preventing recurrent episodes of CDI measured at 8 weeks after treatment.

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).

Hospitalization for kidney stones in the Inflammatory Bowel Disease (IBD) population is common, particularly among Crohn's patients who had a small bowel resection.

The study is to evaluate the long-term safety of oral GED-0301 (mongersen) in subjects with Crohn's Disease.

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 Crohn's disease (CD).

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.

This three-year study (participants with chronic kidney disease [CKD] or cirrhosis will be followed for five years) multicenter study is being done to follow participants who received at least one dose of grazoprevir (MK-5172) in a previous study to determine if they remain hepatitis C virus (HCV

The main purpose of this study is to evaluate the durability of Sustained virologic response (SVR) in participants who achieved SVR at last post-therapy visit of parent studies (LPVPS) with NCT Numbers NCT02569710 and NCT02765490.

This research project will investigate rates of hepatitis C virus (HCV) reinfection after treatment, as well as characterize behaviours and exposures that predict or protect against reinfection.

This is a prospective, multicenter, randomized, double-blinded, placebo-controlled Phase 3 study of a microbiota suspension of intestinal microbes.

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

The purpose of this study is to evaluate the feasibility of the Liver Incyte system for liver elasticity measurement in healthy volunteers and patients with liver fibrosis, and to evaluate the discriminatory ability of elasticity measurements generated by Liver Incyte for healthy volunteers versu