Constitutional delay of growth and adolescence. Results of short-term and long-term treatment with GH.

During recent years numerous reports on the favourable results of short-term trials with GH in patients with constitutional delay of growth and adolescence (CDGA) have been published, but it has been unclear whether such treatment affects final height. In the present study, the results of long-term therapy with GH in replacement doses have been evaluated in 15 patients who were treated with GH for several years (three years on average). At the start of treatment, 10 of the children were prepubertal and 5 were in puberty. All patients were followed up until final height was reached. Mean final height of the 13 male patients was 170.0 +/- 4.4 cm, i.e. -1.58 SDS. In the two female patients, final height was 150.0 cm (-3.5 SDS) and 164.0 cm (-0.8 SDS), respectively. Adult height of the patients lagged behind target height by 5.4 +/- 3.2 cm (mean +/- SD). Measured adult height corresponded to adult height as predicted prior to treatment. In conclusion, GH treatment of patients with CDGA did not increase final height.