Clinical Research Directory

Inclusion Criteria: * Girls are diagnosed as Idiopathic precocious puberty, and their age of onset ≤7.5years; * Tanner stages of breast in female patients ≤ Tanner III stage, diameters of mammillary nucleus ≤ 3cm; •B-type ultrasonography: the volume of uterus≥ 3ml, the volume of ovary≥1.5ml, the diameter of follicle≥4mm; * Bone age: compared the chronological age, the bone age is less than 1 year and the bone age \<10 years old; * No GnRH analogs or Sex hormones were administrated in the past; and All above are needed at the same time. Exclusion Criteria: * Precocity caused by the central nervous system organic diseases; * Precocious precocity caused by congenital hypothyroidism, congenital adrenal hyperplasia, adrenal tumor and ovarian or testicular neoplasms as well as McCune-Albright syndrome, etc; * Precocious precocity with a family history of diseases such as tumor, leukemia, diabetes, systemic lupus erythematous; * Pseudo sexual precocity and partial precocious puberty.