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The histrelin implant: a novel treatment for central precocious puberty.
Pediatrics. 2005 Dec; 116(6):e798-802.Ped

Abstract

OBJECTIVE

Standard treatment of central precocious puberty (CPP) consists of intramuscular or subcutaneous administration of a gonadotropin-releasing hormone (GnRH) agonist (GnRHa) at 3- to 4-week intervals. Although generally effective in suppressing clinical and laboratory parameters of puberty, GnRHa injections are painful, and the need for monthly clinic visits may contribute to poor compliance. Recently, a subcutaneous implant was developed that releases the GnRHa histrelin at an average rate of 65 microg/day. The aims of this study were to determine if a histrelin implant would suppress gonadotropin and estradiol (E2) in girls with CPP for 1 year and to compare the suppression to standard treatment.

METHODS

We studied 11 girls with CPP to determine if the histrelin implant can maintain long-term gonadotropin suppression. Mean age at diagnosis was 6 years (range: 2-9 years). GnRH (100 microg intravenously) stimulation tests (GnRH-STs) showed peak luteinizing hormone and follicle-stimulating hormone responses of 23 +/- 28 (mean +/- SD) and 20 +/- 25 mIU/mL, respectively. All subjects were initially treated with depot intramuscular GnRHa triptorelin embonate. Implants were inserted subcutaneously under local anesthesia, and depot GnRHa treatment was discontinued. Six girls were followed for 15 months after insertion (group A). For the remaining 5 girls, the implant was removed after 9 months, and a new implant was inserted at the same incision site (group B). GnRH-STs were performed before depot GnRHa treatment, immediately before implant insertion, at the 6- and 9-month visits for each patient and the 12- and 15-month visit for those girls followed for 15 months.

RESULTS

In all girls, breast development regressed, growth velocity decreased, and bone-age advancement was slowed. Basal gonadotropins and their responses to GnRH-STs and E2 levels were suppressed. Peak luteinizing hormone and follicle-stimulating hormone responses to GnRH-STs at preinsertion versus 9 months were 1.30 +/- 1.34 vs 0.25 +/- 0.08 and 1.68 +/- 1.08 vs 1.13 +/- 0.55 mIU/mL, respectively. Basal and stimulated gonadotropin levels and E2 level remained suppressed in all 6 patients followed for 15 months after implant insertion. Patients and parents reported less pain and discomfort and less interference with school activity and work with the implant compared with standard monthly injections.

CONCLUSIONS

The histrelin implant consistently suppresses clinical and laboratory parameters of puberty for 1 year and is a promising new technique for treating CPP without the pain and inconvenience of monthly injections.

Authors+Show Affiliations

Pediatric Day Hospital, Israel.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Clinical Trial
Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

16322137

Citation

Hirsch, Harry J., et al. "The Histrelin Implant: a Novel Treatment for Central Precocious Puberty." Pediatrics, vol. 116, no. 6, 2005, pp. e798-802.
Hirsch HJ, Gillis D, Strich D, et al. The histrelin implant: a novel treatment for central precocious puberty. Pediatrics. 2005;116(6):e798-802.
Hirsch, H. J., Gillis, D., Strich, D., Chertin, B., Farkas, A., Lindenberg, T., Gelber, H., & Spitz, I. M. (2005). The histrelin implant: a novel treatment for central precocious puberty. Pediatrics, 116(6), e798-802.
Hirsch HJ, et al. The Histrelin Implant: a Novel Treatment for Central Precocious Puberty. Pediatrics. 2005;116(6):e798-802. PubMed PMID: 16322137.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The histrelin implant: a novel treatment for central precocious puberty. AU - Hirsch,Harry J, AU - Gillis,David, AU - Strich,David, AU - Chertin,Boris, AU - Farkas,Amicur, AU - Lindenberg,Tzina, AU - Gelber,Hadassa, AU - Spitz,Irving M, PY - 2005/12/3/pubmed PY - 2005/12/24/medline PY - 2005/12/3/entrez SP - e798 EP - 802 JF - Pediatrics JO - Pediatrics VL - 116 IS - 6 N2 - OBJECTIVE: Standard treatment of central precocious puberty (CPP) consists of intramuscular or subcutaneous administration of a gonadotropin-releasing hormone (GnRH) agonist (GnRHa) at 3- to 4-week intervals. Although generally effective in suppressing clinical and laboratory parameters of puberty, GnRHa injections are painful, and the need for monthly clinic visits may contribute to poor compliance. Recently, a subcutaneous implant was developed that releases the GnRHa histrelin at an average rate of 65 microg/day. The aims of this study were to determine if a histrelin implant would suppress gonadotropin and estradiol (E2) in girls with CPP for 1 year and to compare the suppression to standard treatment. METHODS: We studied 11 girls with CPP to determine if the histrelin implant can maintain long-term gonadotropin suppression. Mean age at diagnosis was 6 years (range: 2-9 years). GnRH (100 microg intravenously) stimulation tests (GnRH-STs) showed peak luteinizing hormone and follicle-stimulating hormone responses of 23 +/- 28 (mean +/- SD) and 20 +/- 25 mIU/mL, respectively. All subjects were initially treated with depot intramuscular GnRHa triptorelin embonate. Implants were inserted subcutaneously under local anesthesia, and depot GnRHa treatment was discontinued. Six girls were followed for 15 months after insertion (group A). For the remaining 5 girls, the implant was removed after 9 months, and a new implant was inserted at the same incision site (group B). GnRH-STs were performed before depot GnRHa treatment, immediately before implant insertion, at the 6- and 9-month visits for each patient and the 12- and 15-month visit for those girls followed for 15 months. RESULTS: In all girls, breast development regressed, growth velocity decreased, and bone-age advancement was slowed. Basal gonadotropins and their responses to GnRH-STs and E2 levels were suppressed. Peak luteinizing hormone and follicle-stimulating hormone responses to GnRH-STs at preinsertion versus 9 months were 1.30 +/- 1.34 vs 0.25 +/- 0.08 and 1.68 +/- 1.08 vs 1.13 +/- 0.55 mIU/mL, respectively. Basal and stimulated gonadotropin levels and E2 level remained suppressed in all 6 patients followed for 15 months after implant insertion. Patients and parents reported less pain and discomfort and less interference with school activity and work with the implant compared with standard monthly injections. CONCLUSIONS: The histrelin implant consistently suppresses clinical and laboratory parameters of puberty for 1 year and is a promising new technique for treating CPP without the pain and inconvenience of monthly injections. SN - 1098-4275 UR - https://www.unboundmedicine.com/medline/citation/16322137/The_histrelin_implant:_a_novel_treatment_for_central_precocious_puberty_ DB - PRIME DP - Unbound Medicine ER -