Osteogenesis Imperfecta, Type Viii, also known as osteogenesis imperfecta type 8, is related to brittle bone disorder and osteochondrodysplasia. An important gene associated with Osteogenesis Imperfecta, Type Viii is P3H1 (Prolyl 3-Hydroxylase 1), and among its related pathways/superpathways are Collagen chain trimerization and Extracellular matrix organization. Affiliated tissues include bone, and related phenotypes are osteopenia and recurrent fractures