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Profile of mecasermin for the long-term treatment of growth failure in children and adolescents with severe primary IGF-1 deficiency

Authors Fintini D, Brufani C, Cappa M

Published 16 July 2009 Volume 2009:5 Pages 553—559

DOI https://doi.org/10.2147/TCRM.S6178

Review by Single-blind

Peer reviewer comments 3

Danilo Fintini, Claudia Brufani, Marco Cappa

Endocrinology Unit, “Bambino Gesù” Children’s Hospital-IRCCS, Rome, Italy

Abstract: Growth hormone insensitivity syndrome (GHI) or insulin-like growth factor-1 (IGF-1) deficiency (IGFD) is characterized by deficit of IGF-1 production due to alteration of response of growth hormone (GH) receptor to GH. This syndrome is due to mutation of GH receptor or IGF-1 gene and patients affected showed no response to GH therapy. The only treatment is recombinant IGF-1 (mecasermin), which has been available since 1986, but approved in the United States by the US Food and Drug Administration only in 2005 and in Europe by the European Medicines Agency in 2007. To date, few studies are available on long-term treatment with mecasermin in IGFD patients and some of them have a very small number of subjects. In this review we discuss briefly clinical features of severe primary IGFD, laboratory findings, and indications for treatment. Results of long-term therapy with rhIGF1 (mecasermin) in patients affected by severe primary IGFD and possible side effects are explained.

Keywords: mecasermin, therapy, Laron syndrome, IGF-1

General overview

Insulin-like growth factor 1 (IGF-1) is one of the principal mediators of growth hormone (GH) action on linear growth. The lack of IGF-1, called GH insensitivity syndrome (GHI) or IGF-1 deficiency (IGFD), is usually due to a mutation of GH receptor. Affected patients showed specific clinical features and a very short stature with no response to GH therapy. The only treatment to date is recombinant IGF-1 (mecasermin) available since 1986, but approved by the US Food and Drug Administration only in 2005 and by the European Medicines Agency in 2007. To date few studies are available about long-term treatment with mecasermin in IGFD patients and some of them are on a very small number of subjects. In this review we discuss briefly the clinical features of severe primary IGFD, laboratory findings, and indications to treatment. We explain the available results to date regarding long-term therapy with mecasermin in patients affected by severe primary IGFD and possible side effects.

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