This is a prospective cohort study of subjects with portal hypertension to examine whether increased sphingosine 1 phosphate : ceramide ratio and circulating bile acids are associated with HPS in patients with advanced liver disease. The study will consist of 400 individuals who are evaluated for liver transplantation at the Field Centers. This population has advanced liver disease and will represent the population with cirrhosis at the Centers. As is considered standard of clinical care for these patients and required for liver transplant evaluation, patients will undergo phlebotomy, interviews, pulmonary function testing, echocardiography, and arterial blood gas sampling at their initial evaluation. During the clinical phlebotomy, additional samples will be drawn for research purposes. If any of these procedures does not occur during the clinical visit, it may be conducted for research purposes. Six minute walk testing, frailty scales, SF36, and optional actigraphy, all of which are research-only assessments, will be performed at baseline. Subjects will then be followed via phone for the duration of the study period.

TARGET-HCC is a 5-year, longitudinal, observational study of the natural history and management of patients with HCC. The study will address important clinical questions that remain unanswered in the management of HCC with a unique research registry of participants with HCC from academic and community real-world practices. TARGET-HCC is disease focused, not drug specific, which allows for continuous acquisition of real-world evidence regarding the natural history, management, and outcomes of treatment with current therapies and new treatments that may be utilized in usual clinical practice.

This is a 5-year, longitudinal, observational study of patients with NAFL or NASH designed to specifically address important clinical questions that remain incompletely answered from registration trials. In addition to the study database, a bio specimen repository will also be included so that translational studies of genomics and biomarkers of response may be performed.