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GH Dose Reduction Maintains Normal Prepubertal Height Velocity After Initial Catch-Up Growth in Short Children
Umeå universitet, Medicinska fakulteten, Institutionen för klinisk vetenskap, Pediatrik.
Vise andre og tillknytning
2019 (engelsk)Inngår i: Journal of Clinical Endocrinology and Metabolism, ISSN 0021-972X, E-ISSN 1945-7197, Vol. 104, nr 3, s. 835-844Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Context: GH responsiveness guides GH dosing during the catch-up growth (CUG) period; however, little is known regarding GH dosing during the prepubertal maintenance treatment period.

Objective: To evaluate whether SD score (SDS) channel parallel growth with normal height velocity can be maintained after CUG by reducing the GH dose by 50% in children receiving doses individualized according to estimated GH responsiveness during the catch-up period.

Design and Settings: Prepubertal children (n = 98; 72 boys) receiving GH during CUG (GH deficient, n = 33; non–GH deficient, n = 65), were randomized after 2 to 3 years to either a 50% reduced individualized dose (GHRID; n = 27; 20 boys) or unchanged individualized dose (GHUID; n = 38; 27 boys). Another 33 children (25 boys) continued a standard weight-based dose [43 µg/kg/d (GHFIX)].

Main Outcome Measures: The primary endpoint was the proportion of children with ΔheightSDS within ±0.3 at 1 year after GH dose reduction compared with two control groups: GHUIDand GHFIX. The hypothesis was that heightSDS could be maintained within ±0.3 with a reduced individualized GH dose.

Results: For the intention-to-treat population at 1 year, 85% of the GHRIDgroup maintained ΔheightSDS within ±0.3 vs 41% in the GHUIDgroup (P = 0.0055) and 48% in the GHFIXgroup (P = 0.0047). The ΔIGF-ISDS in the GHRID group was −0.75 ± 1.0 at 3 months (P = 0.003) and −0.72 ± 1.2 at 1 year compared with the GHUID group (0.15 ± 1.2; P = 0.005) and GHFIX group (0.05 ± 1.0; P = 0.02).

Conclusions: Channel parallel growth (i.e., normal height velocity) and IGF-ISDS levels within ±2 were maintained after completed CUG using a 50% lower individualized dose than that used during the CUG period.

sted, utgiver, år, opplag, sider
Oxford University Press, 2019. Vol. 104, nr 3, s. 835-844
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Identifikatorer
URN: urn:nbn:se:umu:diva-158115DOI: 10.1210/jc.2018-01006ISI: 000462737000034PubMedID: 30339244OAI: oai:DiVA.org:umu-158115DiVA, id: diva2:1304472
Forskningsfinansiär
Swedish Research Council, 522-2005-7238Swedish Research Council, 7509Tilgjengelig fra: 2019-04-12 Laget: 2019-04-12 Sist oppdatert: 2019-04-12bibliografisk kontrollert

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