Dyskeratosis Congenita, Autosomal Dominant 2, also known as autosomal recessive dyskeratosis congenita 4, is related to dyskeratosis congenita, autosomal dominant 1 and idiopathic aplastic anemia. An important gene associated with Dyskeratosis Congenita, Autosomal Dominant 2 is TERT (Telomerase Reverse Transcriptase), and among its related pathways/superpathways are Regulation of Telomerase and Telomere Extension by Telomerase. Affiliated tissues include bone marrow and bone, and related phenotypes are osteoporosis and premature graying of hair