Osteogenesis imperfecta (OI) comprises a heterogeneous group of genetic disorders characterized by increased bone fragility, low bone mass, and susceptibility to bone fractures with variable severity. The disease is MONDO_0019019 (osteogenesis imperfecta). Also known as: Lobstein disease, Lobstein's syndrome, OI, Osteopsathyrosis, Porak and Durante disease, Vrolik's disease, brittle bone disease, glass bone disease.