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Deprecated: Implicit conversion from float 245.2 to int loses precision in C:\Inetpub\vhosts\kidney.de\httpdocs\pget.php on line 534 Horm+Res 2009 ; 71 (4): 185-93 Nephropedia Template TP
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Noonan syndrome and related disorders: a review of clinical features and mutations in genes of the RAS/MAPK pathway #MMPMID19258709
Jorge AA; Malaquias AC; Arnhold IJ; Mendonca BB
Horm Res 2009[]; 71 (4): 185-93 PMID19258709show ga
Noonan syndrome (NS) is one of the most common syndromes transmitted by a mendelian mode. In recent years, germline mutations that affect components of the RAS-MAPK (mitogen-activated protein kinase) pathway were shown to be involved in the pathogenesis of NS and four rare syndromes with clinical features overlapping with NS: Leopard syndrome, cardio-facio-cutaneous syndrome, Costello syndrome and neurofibromatosis type 1. Several hormones act through receptors that stimulate the RAS-MAPK pathway, and therefore, NS and related disorders represent a remarkable opportunity to study the implication of the RAS-MAPK pathway in different endocrine systems. Additionally, children with NS frequently are referred to the endocrinologist because of short stature, delayed puberty and/or undescended testes in males. In this paper, we review the diagnostic, clinical and molecular aspects of NS and NS-related disorders.