Journal
JOURNAL OF CLINICAL ENDOCRINOLOGY & METABOLISM
Volume 98, Issue 10, Pages 4013-4022Publisher
ENDOCRINE SOC
DOI: 10.1210/jc.2013-2012
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- Pfizer
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Background: The most important reason for treating children with Prader-Willi syndrome (PWS) with GH is to optimize their body composition. Objectives: The aim of this ongoing study was to determine whether long-term GH treatment can counteract the clinical course of increasing obesity in PWS by maintaining the improved body composition brought during early treatment. Setting: This was a multicenter prospective cohort study. Methods: We have been following 60 prepubertal children for 8 years of continuous GH treatment (1 mg/m(2)/d congruent to 0.035 mg/kg/d) and used the same dual-energy x-ray absorptiometry machine for annual measurements of lean body mass and percent fat. Results: After a significant increase during the first year of GH treatment (P < .0001), lean body mass remained stable for 7 years at a level above baseline (P < .0001). After a significant decrease in the first year, percent fat SD score (SDS) and body mass index SDS remained stable at a level not significantly higher than at baseline (P = .06, P = .14, resp.). However, body mass index SDSPWS was significantly lower after 8 years of GH treatment than at baseline (P < .0001). After 8 years of treatment, height SDS and head circumference SDS had completely normalized. IGF-1 SDS increased to +2.36 SDS during the first year of treatment (P < .0001) and remained stable since then. GH treatment did not adversely affect glucose homeostasis, serum lipids, blood pressure, and bone maturation. Conclusion: This 8-year study demonstrates that GH treatment is a potent force for counteracting the clinical course of obesity in children with PWS.
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