title: Age at menarche and near final height after treatment with gonadotropin-releasing hormone agonist alone or combined with growth hormone in Korean girls with central precocious puberty.
abstract: The use of a GnRH agonist (GnRHa) in central precocious puberty (CPP) is known to slow puberty progression, subsequently prevent early menarche, and attenuate the height loss caused by advanced skeletal maturation. But enhancing the final height has been so controversial that an additional approach has been used. We investigated the menarcheal age and near final height (NFH) in girls with CPP treated with GnRHa (N = 61) or GnRHa combined GH (N = 24). GnRHa was started at 8.1 ± 0.7 yr and administered for 2.1 ± 1.0 years. GH was used for 2.1 ± 1.1 yr in subjects with a short predicted adult height (PAH). Menarche occurred at 11.6 ± 0.8 yr of age, which was 15.7 ± 6.4 mo after GnRHa discontinuation. PAH increased significantly from 152.0 ± 7.2 cm to 158.8 ± 5.6 cm during treatment, and the NFH (159.7 ± 4.8 cm) was taller than the midparental height (157.8 ± 3.4 cm). The combined treatment group showed a greater height increment during treatment. Younger age, taller height at the start of treatment, taller parental height and longer duration of treatment were the factors influencing NFH. In conclusion, GnRHa treatment in girls with CPP could improve NFH and delay menarche close to the general population. If GnRHa combined with GH is used in girls with CPP and a short midparental height, it would improve the NFH to a value similar to that in the general population.
authors.affiliation: Department of Pediatrics, Chungbuk National University College of Medicine, Cheongju, Republic of Korea.
authors.forename: YunHee
authors.initials: Y
authors.lastname: Gyon
authors.affiliation: Department of Pediatrics, Chungbuk National University College of Medicine, Cheongju, Republic of Korea.
authors.forename: Yeong Ju
authors.initials: YJ
authors.lastname: Yun
authors.affiliation: Department of Preventive Medicine, Chungbuk National University College of Medicine, Cheongju, Republic of Korea.
authors.forename: Yong-Dae
authors.initials: YD
authors.lastname: Kim
authors.affiliation: Department of Pediatrics, Chungbuk National University College of Medicine, Cheongju, Republic of Korea.
authors.forename: Heon-Seok
authors.initials: HS
authors.lastname: Han
keywords: GH; GnRH; height; menarche; precocious puberty