Mondo Description Osteogenesis imperfecta type I is a mild type of osteogenesis imperfecta (OI), a genetic disorder characterized by increased bone fragility, low bone mass and susceptibility to bone fractures.

Uniprot Description An autosomal dominant form of osteogenesis imperfecta, a connective tissue disorder characterized by low bone mass, bone fragility and susceptibility to fractures after minimal trauma. Disease severity ranges from very mild forms without fractures to intrauterine fractures and perinatal lethality. Extraskeletal manifestations, which affect a variable number of patients, are dentinogenesis imperfecta, hearing loss, and blue sclerae. OI1 is a non-deforming form with normal height or mild short stature, and no dentinogenesis imperfecta.