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      Efficacy and safety of leuprolide acetate 3-month depot 11.25 milligrams or 30 milligrams for the treatment of central precocious puberty.

      The Journal of Clinical Endocrinology and Metabolism

      Child, Child, Preschool, Dose-Response Relationship, Drug, Estradiol, blood, Female, Follicle Stimulating Hormone, Humans, Infant, Leuprolide, administration & dosage, adverse effects, therapeutic use, Luteinizing Hormone, Male, Puberty, Precocious, drug therapy, Testosterone, Treatment Outcome

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          Abstract

          GnRH agonist (GnRHa) monthly injections are frequently used in the treatment of central precocious puberty (CPP). The 3-month leuprolide depot 11.25- and 30-mg formulations are newly approved treatment options. The aim of the study was to investigate the safety and efficacy of leuprolide acetate 3-month depot formulations for the treatment of CPP in children. This was a phase III, randomized, open-label, dose-ranging 6-month study. Twenty-two U.S. medical centers (including Puerto Rico) participated. Children diagnosed with CPP (n = 84), who were either treatment naive or previously treated with GnRHa, were recruited. Chronological age at onset of pubertal signs was less than 8 yr in girls and less than 9 yr in boys, and bone age was advanced over chronological age at least 1 yr. Leuprolide acetate depot (11.25 or 30 mg) was administered im every 3 months. Biochemical [peak-stimulated LH, estradiol (girls), and testosterone (boys)] and anthropometric (growth rate, bone age acceleration, pubertal progression) parameters and safety were assessed. Peak-stimulated LH was suppressed in the 11.25- and 30-mg dose groups in 78.4 and 95.2%, respectively, of children from months 2 through 6. There were nine treatment failures (peak-stimulated LH >4 IU/liter) in the 11.25-mg group and two in the 30-mg group. Basal sex steroid suppression, growth rates, pubertal progression, bone age advancement, and adverse events were similar with either dose. Treatment with leuprolide acetate 3-month depot formulations (11.25 and 30 mg) effectively suppressed the GnRH axis, was well tolerated, and may positively impact patient convenience and compliance.

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          Journal
          22344198
          10.1210/jc.2011-2704

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