Abstract
Noonan syndrome (NS; MIM 163950) is an autosomal dominant disorder. With incidence of 1/1000 to 1/2500 live births, NS belongs to the most common genetic disorders. Typical features of NS are: short stature, chest deformities, congenital heart defects, cryptorchidism and dysmorphic features. Mutations of PTPN11 gene (located on chromosome 12q24.1) are responsible for NS and are identified in 33-60% cases. Less than half of the cases are familial. This paper presents current opinion on clinical symptoms, molecular pathogenesis and possibilities of growth hormone therapy. The genotype--phenotype correlation is also discussed.
MeSH terms
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Abnormalities, Multiple / diagnosis
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Abnormalities, Multiple / genetics
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DNA Mutational Analysis
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Genetic Therapy
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Genotype
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Humans
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Intracellular Signaling Peptides and Proteins / genetics*
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Mutation, Missense
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Noonan Syndrome / diagnosis*
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Noonan Syndrome / genetics*
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Noonan Syndrome / therapy
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Phenotype
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Protein Tyrosine Phosphatase, Non-Receptor Type 11
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Protein Tyrosine Phosphatases / genetics*
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SH2 Domain-Containing Protein Tyrosine Phosphatases
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src Homology Domains / genetics*
Substances
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Intracellular Signaling Peptides and Proteins
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PTPN11 protein, human
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Protein Tyrosine Phosphatase, Non-Receptor Type 11
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Protein Tyrosine Phosphatases
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SH2 Domain-Containing Protein Tyrosine Phosphatases