Spermatogenic Failure 8, also known as spgf8, is related to 46,xy partial gonadal dysgenesis and 45,x/46,xy mixed gonadal dysgenesis. An important gene associated with Spermatogenic Failure 8 is NR5A1 (Nuclear Receptor Subfamily 5 Group A Member 1), and among its related pathways/superpathways is Mammalian disorder of sexual development. Affiliated tissues include testis, and related phenotypes are azoospermia and oligozoospermia