Journal of Clinical Endocrinology & Metabolism, Vol 77, 1334-1339, Copyright © 1993 by Endocrine Society

ARTICLES

Effect of deslorelin-induced pubertal delay on the growth of adolescents with short stature and normally timed puberty: preliminary results

G Municchi, SR Rose, OH Pescovitz, KM Barnes, FG Cassorla and GB Cutler Jr
Developmental Endocrinology Branch, National Institute of Child Health and Human Development, National Institutes of Health, Bethesda, Maryland 20892.

LH-releasing hormone agonist (LHRHa) treatment slows bone maturation and improves adult height in children with LHRH-dependent precocious puberty. To determine whether pubertal delay induced by LHRHa can enhance final height in patients with short stature and a normally timed puberty, we enrolled 43 short children (28 girls and 15 boys) in a double blind, placebo-controlled trial. Patients were assigned randomly to receive either placebo or LHRHa (deslorelin), administered sc at a dose of 4 micrograms/kg.day for a period of 4 yr. This report describes the preliminary results in 16 children who have completed 4 yr of treatment (9 patients in the deslorelin group and 7 patients in the placebo group). Predicted adult height increased significantly in the deslorelin-treated patients, by 7.6 cm compared to the pretreatment baseline and by 10.3 cm compared to that in the placebo-treated patients (P < 0.005). Four of the 16 patients received concurrent GH treatment (3 among the deslorelin-treated patients and 1 among the placebo-treated patients). Omitting these patients from the analysis did not materially affect the results: predicted adult height in the deslorelin-treated patients increased by 7.2 cm compared to the pretreatment baseline and by 10.9 cm compared to that in the placebo- treated patients (P < 0.005). We conclude that pubertal delay induced by deslorelin significantly increases predicted adult height in adolescents with short stature and a normally timed puberty. Whether deslorelin treatment will increase the final height of these patients cannot be determined until they have stopped growing.

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