has material basis in germline mutation in CLCN7 autosomal dominant osteopetrosis 2 https://github.com/monarch-initiative/mondo/issues/4948 https://www.malacards.org/card/osteopetrosis_autosomal_dominant_2 A sclerosing disorder of the skeleton characterized by increased bone density that classically displays the radiographic sign of ''sandwich vertebrae'' (dense bands of sclerosis parallel to the vertebral endplates). Albers-Schönberg osteopetrosis SCTID:725050005 UMLS:C3179239 GARD:0000383 autosomal dominant osteopetrosis type 2 MEDGEN:465707 DOID:0110938 Orphanet:53 osteopetrosis, autosomal dominant 2 MONDO:0008156 osteopetrosis, autosomal dominant type 2 OPTA2 osteopetrosis autosomal dominant type 2 OMIM:166600 obsolete unclassified primitive or secondary maculopathy hereditary optic neuropathy autosomal dominant osteopetrosis