Monarch Disease Ontology entry MONDO_0013914 (hypogonadotropic hypogonadism 12 with or without anosmia) is a hypogonadotropic hypogonadism that has material basis in homozygous mutation in the GNRH1 gene on chromosome 8p21. Also known as: eunuchoidism, familial hypogonadotropic, familial hypogonadotrophic eunuchoidism, familial idiopathic gonadotrpin deficiency.