Osteogenesis Imperfecta, Type Ii, also known as osteogenesis imperfecta type 2, is related to osteogenesis imperfecta, type viii and osteogenesis imperfecta, type vii. An important gene associated with Osteogenesis Imperfecta, Type Ii is COL1A1 (Collagen Type I Alpha 1 Chain), and among its related pathways/superpathways are Phospholipase-C Pathway and Collagen chain trimerization. Affiliated tissues include bone and eye, and related phenotypes are thin ribs and thoracic hypoplasia