Fanconi Renotubular Syndrome 4 with Maturity-Onset Diabetes of the Young, also known as frts4 with mody, is related to coloboma of macula and maturity-onset diabetes of the young, type 1. An important gene associated with Fanconi Renotubular Syndrome 4 with Maturity-Onset Diabetes of the Young is HNF4A (Hepatocyte Nuclear Factor 4 Alpha). Affiliated tissues include kidney and liver, and related phenotypes are diabetes mellitus and hepatomegaly