According to single factor analysis reported by Desai and Neuberger [74], age, gender, Caucasian, past malignancies, multiple organ transplantation, alcoholic liver disease, primary sclerosing cholangitis, and nonalcoholic steatohepatitis were associated with primary diseases, obesity, diabetes, age of donors, and use of mTOR inhibitors during transplantation. This evidence concerns the gene MTOR and diabetes mellitus.