US National OCS Liver Perfusion (OLP) Registry is a study that collects information about liver transplants. The study is observational, which means doctors watch what happens without giving you new treatments. The U.S. government’s transplant registry, called UNOS, collects data about liver transplants. This study looks at data from patients using OCS (Organ Care System) livers and other ways of keeping livers healthy before transplant.

The study wants to learn more about how well different methods work for liver transplants. If you’ve had a liver transplant, you can be part of this study. Doctors at different hospitals will look at the information they already have about your transplant. They will also collect new data about OCS Liver perfusion, which is a way to keep the liver healthy before it's transplanted.

• The study is for all liver transplant patients.
• It collects data from existing records and new information.
• This study is observational, so it doesn't involve any new treatments or medications.