Published online August 10, 2009
PEDIATRICS Vol. 124 No. 3 September 2009, pp. e519-e531 (doi:10.1542/peds.2009-0293)
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REVIEW ARTICLE

Impact of Growth Hormone Therapy on Adult Height of Children Born Small for Gestational Age

Arianna Maiorana, MD, PhD and Stefano Cianfarani, MD

"Rina Balducci" Center of Pediatric Endocrinology, Department of Public Health and Cell Biology, Tor Vergata University, Rome, Italy

CONTEXT: Use of growth hormone (GH) therapy to promote growth in short children born small for gestational age (SGA) was recently approved in the United States and Europe, but there is still disagreement about the magnitude of effectiveness of GH.

OBJECTIVE: To determine the impact of GH therapy on adult height in short SGA children by a meta-analysis of randomized, controlled trials (RCTs).

METHODS: We performed a systematic review of controlled studies using as data sources the Cochrane Central Register of Controlled Trials, Medline, and the bibliographic references from all retrieved articles describing RCTs up to November 2008. A meta-analysis of all RCT studies conducted up to the achievement of adult height was performed. Inclusion criteria were birth weight and/or length below –2 SD score (SDS), initial height less than –2 SDS, and GH dose range of 33 to 67 µg/kg per day. Adult height SDS and overall height gain SDS were the primary outcome measures.

RESULTS: Four RCTs (391 children) met the inclusion criteria. The adult height of the GH-treated group significantly exceeded controls by 0.9 SDS. Mean height gain was 1.5 SDS in treated versus 0.25 SDS in untreated SGA subjects. No significant difference in adult height was observed between the 2 GH dose regimens.

CONCLUSIONS: GH therapy seems to be an effective approach to partially reduce the adult height deficit in short SGA children. However, the response to therapy is highly variable, and additional studies are needed to identify the responders.

Key Words: small for gestational age • SGA • growth hormone • GH • therapy • meta-analysis • systematic review

Abbreviations: SGA—small for gestational age • GH—growth hormone • SDS—SD score(s) • MPH—midparental height • RCT—randomized, controlled trial • GHD—growth hormone deficiency • CI—confidence interval

Accepted Apr 16, 2009.


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Effect of Growth Hormone on Adult Height of Children Born Small for Gestational Age
Journal Watch (General), September 22, 2009; 2009(922): 3 - 3.
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