Osteopetrosis, Autosomal Dominant 2, also known as osteopetrosis autosomal dominant type 2, is related to osteopetrosis, autosomal recessive 7 and osteopetrosis, autosomal dominant 1. An important gene associated with Osteopetrosis, Autosomal Dominant 2 is CLCN7 (Chloride Voltage-Gated Channel 7), and among its related pathways/superpathways are Vitamin D receptor pathway and Clock-controlled autophagy in bone metabolism. The drugs Methotrexate and Alemtuzumab have been mentioned in the context of this disorder. Affiliated tissues include bone and bone marrow, and related phenotypes are macrocephaly and frontal bossing