Classic Ehlers-Danlos Syndrome, also known as ehlers-danlos syndrome, classic type, is related to ehlers-danlos syndrome, classic type, 2 and ehlers-danlos syndrome, classic type, 1. An important gene associated with Classic Ehlers-Danlos Syndrome is COL5A1 (Collagen Type V Alpha 1 Chain), and among its related pathways/superpathways are Integrin Pathway and Phospholipase-C Pathway. The drug Thrombin has been mentioned in the context of this disorder. Affiliated tissues include skin and bone, and related phenotypes are striae distensae and hyperextensible skin