Munchausen by Proxy, also known as munchausen syndrome by proxy, is related to factitious disorder and hyperinsulinemic hypoglycemia, familial, 1. An important gene associated with Munchausen by Proxy is GCK (Glucokinase), and among its related pathways/superpathways are Disorders of transmembrane transporters and Antiarrhythmic Pathway, Pharmacodynamics. Affiliated tissues include brain and kidney.