Mondo Description Autosomal dominant osteopetrosis type I (ADO I) is a sclerosing bone disorder characterized by skeletal densification that predominantly involves the cranial vault.

Uniprot Description A rare genetic disease characterized by abnormally dense bone, due to defective resorption of immature bone. Osteopetrosis occurs in two forms: a severe autosomal recessive form occurring in utero, infancy, or childhood, and a benign autosomal dominant form occurring in adolescence or adulthood. OPTA1 is an autosomal dominant form characterized by generalized osteosclerosis most pronounced in the cranial vault. Patients are often asymptomatic, but some suffer from pain and hearing loss. It appears to be the only type of osteopetrosis not associated with an increased fracture rate.

Disease Ontology Description An osteopetrosis characterized by autosomal dominant inheritance of generalized osteosclerosis that is most pronounced in the cranial vault, absence of increased fractures and has_material_basis_in heterozygous mutation in the LRP5 gene on chromosome 11q13.