GH1 and central precocious puberty: Concerning the curative effect of GH alone, it has been reported that the final height (-2.5 SD) of 5 adults treated with GH was slightly better than that of 65 adults without GH treatment (-3.0 SD).[7] However, the special situation was that the child had breast development after 6 months of treatment, which was diagnosed as idiopathic CPP after gonadotropin releasing hormone stimulation test using Triptorelin (Diphereline).