Monarch Disease Ontology id MONDO_0014107 (hypogonadotropic hypogonadism 21 with or without anosmia) is any hypogonadotropic hypogonadism in which the cause of the disease is a mutation in the FLRT3 gene. Also known as: FLRT3 hypogonadotropic hypogonadism, hypogonadotropic hypogonadism 21 with anosmia, hypogonadotropic hypogonadism caused by mutation in FLRT3.