Study of Lupron Depot In The Treatment of Central Precocious Puberty

Inclusion Criteria: * Clinical diagnosis of isosexual central precocious puberty with onset of Tanner scores of Stage II for breast or pubic hair earlier than age 8.0 years in girls or Stage II for pubic hair or genitalia earlier than 9.0 years in boys. * Confirmation of diagnosis by a pubertal response to a gonadotropin-releasing hormone (GnRH) stimulation test (LH \> 10 U/L at baseline). * Chronological age less than 9.0 years in girls or less than 10.0 years in boys at time of first dosing. * Bone age advanced at least 1 year beyond the chronological age at entry into the study. * The condition may be idiopathic or secondary to another lesion. If secondary, therapy of the primary condition will have been undertaken and stabilized. * No evidence of abnormal pituitary, adrenal, thyroid and gonadal function except for premature secretion of gonadotropins. Exclusion Criteria: * Irradiation to the central nervous system. * Prior therapy with medroxyprogesterone acetate and/or with any GnRH analog (including prior treatment with daily subcutaneous and depot formulations of leuprolide acetate).