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Am J Med Genet A. 2011 Jul;155A(7):1640-5. doi: 10.1002/ajmg.a.34059. Epub 2011 May 27.

5q14.3 neurocutaneous syndrome: a novel continguous gene syndrome caused by simultaneous deletion of RASA1 and MEF2C.

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1
Department of Medicine, Methodist University Hospital/University of Tennessee Health Science Center, Memphis, 38104, USA. chirswearr@hotmail.com

Abstract

Haploinsufficiency of RASA1, located on chromosome 5q14.3, has been identified as the etiology underlying the disorder capillary malformation-arteriovenous malformation (CM-AVM). Recently, haploinsufficiency of MEF2C, located 1.33 Mb distal to RASA1 on chromosome 5q14.3, has been implicated as the genetic etiology underlying a complex array of deficits including mental retardation, hypotonia, absent speech, seizures, and brain anomalies. Here we report a patient who is haploinsufficient in both RASA1 and MEF2C who presents with dermatologic and neurologic abnormalities that constitute a 5q14.3 neurocutaneous syndrome. This finding highlights the need to assess for CM-AVM in patients with neurologic features consistent with MEF2C haploinsufficiency, and vice versa.

PMID:
21626678
DOI:
10.1002/ajmg.a.34059
[Indexed for MEDLINE]
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