Combined Osteogenesis Imperfecta and Ehlers-Danlos Syndrome 1, also known as oieds1, is related to ehlers-danlos syndrome and ehlers-danlos syndrome, arthrochalasia type, 1. An important gene associated with Combined Osteogenesis Imperfecta and Ehlers-Danlos Syndrome 1 is COL1A1 (Collagen Type I Alpha 1 Chain). Affiliated tissues include bone and skin, and related phenotypes are reduced bone mineral density and joint hypermobility