We chose alanine transaminase (ALT), aspartate transaminase (AST), lactate dehydrogenase (LDH), gamma-glutamyltransferase (GGT), alkaline phosphatase (ALP), glucose (GLU), immunoglobulin A (IgA), IgG, IgM, and ALB as parameters to evaluate the nutritional status of breast cancer patients. This evidence concerns the gene GPT and breast cancer.