Osteogenesis Imperfecta, Type Xix, also known as oi19, is related to osteogenesis imperfecta, type xi and craniolenticulosutural dysplasia. An important gene associated with Osteogenesis Imperfecta, Type Xix is MBTPS2 (Membrane Bound Transcription Factor Peptidase, Site 2), and among its related pathways/superpathways are Collagen chain trimerization and Extracellular matrix organization. Affiliated tissues include bone and skin, and related phenotypes are osteopenia and recurrent fractures