Lynch Syndrome 1, also known as colorectal cancer, hereditary nonpolyposis, type 1, is related to lynch syndrome 4 and lynch syndrome 5. An important gene associated with Lynch Syndrome 1 is MSH2 (MutS Homolog 2), and among its related pathways/superpathways are Homology Directed Repair and Regulation of TP53 Activity. The drugs Fluorouracil and Oxaliplatin have been mentioned in the context of this disorder. Affiliated tissues include colon and small intestine, and related phenotypes are colon cancer and Synthetic lethal with MLN4924 (a NAE inhibitor)