The association of severe encephalopathy and question mark ear is highly suggestive of loss of MEF2C function
C T Gordon1,2, A Tessier1,2, Z Demir3
1Laboratory of Embryology and Genetics of Congenital Malformations, Institut National de la Santé et de la Recherche Médicale (INSERM) UMR 1163, Institut Imagine, Paris, France.
Clinical Genetics
|April 30, 2017
Abstract:
Auriculocondylar syndrome and isolated question mark ear result from dysregulation of the endothelin 1-endothelin receptor type A signaling pathway. Animal models have highlighted the role of the transcription factor MEF2C as an effector of this pathway. We report heterozygous MEF2C loss-of-function as a possible cause of question mark ear associated with intellectual deficiency.


