Many people with type 1 diabetes may choose to have pancreas transplants and many doctors think islet transplants are a better option even after performing clinical trials on islet transplants. Islets are clusters of cells in the pancreas that make insulin.

If people have a type 1 diabetes then islet cells destroyed.  Only 1-2% of the pancreas is made up of islet cells. In pancreatic islet transplantation, cells are taken from a donor pancreas and transferred into another person. The most common cause of cirrhosis requiring liver transplantation.