Proximal Symphalangism, also known as symphalangism, proximal, is related to brachydactyly, type b1 and multiple synostoses syndrome. An important gene associated with Proximal Symphalangism is NOG (Noggin), and among its related pathways/superpathways are ERK Signaling and Akt Signaling. Affiliated tissues include bone and skin, and related phenotypes are camptodactyly of finger and synostosis of carpal bones