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Horm Res. 2009 Dec;72 Suppl 2:57-63. doi: 10.1159/000243782. Epub 2009 Dec 22.

Genetic and pathogenetic aspects of Noonan syndrome and related disorders.

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Institute of Human Genetics, University Hospital Erlangen, University of Erlangen-Nuremberg, Germany.


Noonan syndrome (NS) and the clinically overlapping disorders cardio-facio-cutaneous syndrome, LEOPARD syndrome, Costello syndrome and Neurofibromatosis-Noonan syndrome share the clinical features of short stature, the same spectrum of congenital heart defects, and a similar pattern of craniofacial anomalies. It is now known that all these disorders are caused by mutations in components of the RAS-MAPK signaling pathway. This pathway was previously known for its involvement in tumorigenesis. This article reviews the current knowledge on underlying genetic alterations and possible pathogenetic mechanisms responsible for NS and related disorders. It discusses the relationship between a group of developmental disorders and oncogenes. Potential future treatment prospects are based on the possibility of inhibiting RAS-MAPK signaling by pharmaceuticals.

[Indexed for MEDLINE]

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