Nonalcoholic Fatty Liver Disease (NAFLD) Adult Database 2

The NAFLD Database 2 will recruit at least 1,500 new adult participants suspected or known to have NAFLD or nonalcoholic steatohepatitis (NASH)-related cirrhosis and will also invite adult participants from the prior NAFLD Database and related studies (PIVENS trial and TONIC trial) to enroll in the NAFLD Database 2. To elucidate, through the cooperative effort of a multidisciplinary and multicenter group of collaborators, the etiology, natural history, diagnosis, treatment, and prevention of NAFLD, and in particular its more severe form of NASH and its complications.

To add to the existing NAFLD Database an additional 1,500 adult participants with a diagnosis of NAFLD, supported by a recent liver biopsy, with a broad range of severity. Core data collection will include clinical, demographic, laboratory, imaging, and histological features * To increase the population diversity of the NAFLD Database to provide greater representation of Hispanic, Native American, African American, and Asian patients among the new adult participants recruited into the NAFLD Database 2 * To expand the current specimen bank comprised of liver tissue, serum, plasma, and DNA obtained from new participants and continuing participants undergoing repeat liver biopsy with the specific goal of optimizing the collection of plasma or serum suitable for biomarker development studies by obtaining specimens in close temporal proximity to the performance of liver biopsy