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CURRENT ISSUEMINERVA ENDOCRINOLOGICA

A Journal on Endocrine System Diseases

Indexed/Abstracted in: EMBASE, PubMed/MEDLINE, Science Citation Index Expanded (SciSearch), Scopus
Impact Factor 1,118

Frequency: Quarterly

ISSN 0391-1977

Online ISSN 1827-1634

 

Minerva Endocrinologica 2016 Jun 15

Is retesting in growth hormone deficient children really useful?

Cristina MEAZZA 1, Chiara GERTOSIO 2, Sara PAGANI 1, Alba PILOTTA 3, Carmine TINELLI 4, Fabio BUZI 5, Giovanni FARELLO 6, Giulia GENONI 7, Gianni BONA 7, Mauro BOZZOLA 1

1 Internal Medicine and Therapeutics Department, Pediatrics and Adolescentology Unit, University of Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; 2 University of Pavia, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy: 3 Auxoendocrinology Centre, Pediatrics Department, University of Brescia, Spedali Civili, Brescia, Italy; 4 Clinical Epidemiology and Biometric Unit, Fondazione IRCCS Policlinico San Matteo, Pavia, Italy; 5 Department of Pediatrics, "Carlo Poma" Hospital, Mantova, Italy; 6 Pediatric Unit, Department of Life Health and Environmental Sciences, University of L'Aquila, L’Aquila, Italy; 7 Division of Pediatrics, Department of Health Sciences, University of "Piemonte Orientale Amedeo Avogadro", Novara, Italy

BACKGROUND: Patients with childhood-onset GH deficiency (GHD) are usually retested after achievement of near final height, to verify whether they need to continue GH treatment. We investigated if GH stimulation test is necessary to confirm a persistent status of GHD or if other parameters could be a reliable predictors of GHD persistence.
METHODS: 164 children with idiopathic GHD (55 females and 109 males) were retested when they reached near final height using GH releasing hormone (GHRH)+arginine test or arginine alone.
RESULTS: At diagnosis, 23.8% of patients showed severe GHD (GH peak at diagnosis <5 ng/ml) and 76.2% showed partial GHD (GH peak <10 ng/ml). At time of retesting, 82.1% of severe GHD and 82.4% of partial GHD patients showed transient GHD. IGF-I levels were not different between persistent (0.18±1.18 SDS) and transient GHD subjects (0.17±0.82 SDS). Furthermore, among persistent severe GHD patients only two showed very reduced levels of IGF-I (<-2.0 SDS).
CONCLUSIONS: The majority of patients idiopathic GHD proved to be transient. IGF-I levels alone do not discriminate subjects with persistent from those with transient GHD. Therefore, after the end of GH substitutive treatment, a re-evaluation of GH secretion is mandatory to verify the persistence of GHD in adulthood.

language: English


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