Article
Genotype-phenotype analysis of TCF4 mutations causing Pitt-Hopkins syndrome shows increased seizure activity with missense mutations.
Genetics in medicine : official journal of the American College of Medical Genetics - 1 Nov 2009
Rosenfeld Jill A, Leppig Kathleen, Ballif Blake C, Thiese Heidi, Erdie-Lalena Christine, Bawle Erwati, Sastry Sujatha, Spence J Edward, Bandholz Anne, Surti Urvashi, Zonana Jonathan, Keller Kory, Meschino Wendy, Bejjani Bassem A, Torchia Beth S, Shaffer Lisa G
Abstract excerpt
PURPOSE: Pitt-Hopkins syndrome is characterized by severe mental retardation, characteristic dysmorphic features, and susceptibility to childhood-onset seizures and intermittent episodes of hyperventilation. This syndrome is caused by haploinsufficiency of TCF4, which encodes a basic helix-loop-helix transcription factor. Missense, nonsense, splice-site mutations, and gene deletions have been found in individuals...
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