Osteogenesis Imperfecta, Type Ix, also known as osteogenesis imperfecta type 9, is related to brittle bone disorder and bone disease. An important gene associated with Osteogenesis Imperfecta, Type Ix is PPIB (Peptidylprolyl Isomerase B), and among its related pathways/superpathways are Collagen chain trimerization and Extracellular matrix organization. Affiliated tissues include bone, and related phenotypes are scoliosis and kyphosis