Prolonged Pulsatile Kisspeptin Administration in Hypogonadotropic Hypogonadism

The goal of this study is to develop novel treatments for patients with a condition called hypogonadotropic hypogonadism (HH) through the use of exogenous kisspeptin.

Inclusion/exclusion criteria: * Age 18 years and older, * Confirmed diagnosis of HH with * Low testosterone or estradiol, * Low or low-normal gonadotropin levels, * Thyroid stimulating hormone (TSH) and prolactin within the reference range, * Absence of abnormal pituitary or hypothalamic findings on Magnetic resonance imaging (MRI), * All other medical conditions stable and well controlled, * No prescription medications known to affect reproductive endocrine function for at least 2 months or for 5 half-lives of the drug (whichever is shorter) except for medications used to treat the subject's reproductive condition, * No history of a medication reaction requiring emergency medical care, * No illicit drug use, * No excessive alcohol consumption (\