Efficacy, Metabolism and BMD of the 3-month TP Compared to the 1-month TP in ICPP

The primary objective of this study is to compare the efficacy of the 3-month formulation and 1-month formulation of triptorelin and to assess the short-term effects of the 3-month formulation of triptorelin on glucose and lipid metabolism, body composition, and bone density in Chinese ICPP patients.

Idiopathic central precocious puberty (CPP) is an important treatable disease causing pubertal growth disorders. Gonadotropin-releasing hormone analogs (GnRHa) are the first-line drugs for treating idiopathic central precocious puberty (ICPP). Currently, the 1-month formulation (3.75mg) is the most widely used in China. The development of long-acting formulations will reduce the number of injections and treatment costs for children, as well as reduce the clinical visit burden. The 3-month formulation of Triptorelin Pamoate (15mg) was approved for use in central precocious puberty in March 2023. At present, there is only one publicly reported small-sample, single-arm clinical study in China, and there are no large-sample, real-world, concurrent controlled clinical study data on the efficacy and safety of the 3-month and 1-month formulations of triptorelin in the treatment of central precocious puberty. In currently reported safety events both domestically and internationally, there are no reports on the effects of the 3-month formulation of triptorelin on patients' glucose and lipid metabolism, body composition, and bone density. Our research team previously observed in a small-sample retrospective study of female patients with ICPP that after 1 year of treatment with the 3-month formulation of GnRHa (11.25mg leuprorelin), it effectively inhibited the hypothalamic-pituitary-gonadal axis and bone age progression, improved predicted adult height, and had no serious safety events. Therefore, based on our previous work, we plan to conduct a large-sample, real-world, concurrent controlled study to evaluate the gonadal axis suppression and predicted adult height benefits of the 3-month formulation of triptorelin compared to the 1-month formulation in patients with central precocious puberty (CPP). Additionally, we will assess the short-term effects of the 3-month formulation of triptorelin on glucose and lipid metabolism, body composition, and bone density in ICPP patients. The study results are expected to provide clinical evidence for the application of the 3-month formulation in the treatment of central precocious puberty in China.