Osteopetrosis, Autosomal Recessive 2, also known as osteopetrosis, mild autosomal recessive form, is related to osteopetrosis, autosomal recessive 7 and dysosteosclerosis. An important gene associated with Osteopetrosis, Autosomal Recessive 2 is TNFSF11 (TNF Superfamily Member 11), and among its related pathways/superpathways are CNTF Signaling and NF-kappaB Signaling. Affiliated tissues include bone and bone marrow, and related phenotypes are anemia and hepatosplenomegaly