Effects of long-term treatment with recombinant growth hormone on growth outcome in children born small for gestational age: a systematic review

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Abstract
Children born small for gestational age (SGA) are defined as those having birth weight and/or length below -2 SD for gestational age. In approximately 90% of cases, SGA children experience catch-up growth in the first two years of life and a subsequent regular growth rate, reaching normal adult height. However, in the remaining 10% of cases, SGA children fail to have catch-up growth, showing persistent short stature and a constantly impaired growth rate, leading to decreased adult height compared with both general population and their mid-parental height. Therefore, in these children GH treatment may be indicated to improve growth outcome. As it can be started in most countries from the age of 4 years and is usually recommended until the completion of puberty, long-term GH treatment in SGA children (namely, longer than three years) showed a persistent improvement in height and an initial improvement in growth rate in the first year of treatment, followed by a stable, regular growth rate over time. In the present article, we systematically reviewed the currently available reports about efficacy of long-term GH treatment in SGA children, with a particular focus on growth rate over time and adult height.

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