Combined Osteogenesis Imperfecta and Ehlers-Danlos Syndrome 2, is also known as oieds2. An important gene associated with Combined Osteogenesis Imperfecta and Ehlers-Danlos Syndrome 2 is COL1A2 (Collagen Type I Alpha 2 Chain). Affiliated tissues include bone and skin, and related phenotypes are joint hypermobility and bruising susceptibility