- GHD of either one of the following criteria: a) Adult onset: subjects who have GHD, either alone or associated with multiple hormone deficiencies (hypopituitarism), as a result of pituitary disease, hypothalamic disease, surgery, radiation therapy, or traumatic brain injury (TBI), b) Childhood Onset: Subjects who were growth hormone deficient during childhood as a result of congenital, genetic, acquired, or idiopathic causes