In a previous study conducted of 20 girls with idiopathic CPP who received GnRHa monotherapy and GnRHa + GH treatment, pretreatment PAH and FAH were 155.5 ± 1.7 cm and 157.1 ± 2.5 cm, respectively, in patients treated with GnRHa alone. Here, GH1 is linked to central precocious puberty.