Hypogonadotropic Hypogonadism 5 with or Without Anosmia, also known as kallmann syndrome 5, is related to hypogonadotropic hypogonadism 2 with or without anosmia and esophageal atresia. An important gene associated with Hypogonadotropic Hypogonadism 5 with or Without Anosmia is CHD7 (Chromodomain Helicase DNA Binding Protein 7). Affiliated tissues include pituitary and ovary, and related phenotypes are anosmia and sensorineural hearing impairment