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FOXC1 haploinsufficiency due to 6p25 deletion in a patient with rapidly progressing aortic valve disease

By Caroline Ovaert, Tiffany Busa, Emilie Faure, Chantal Missirian, Nicole Philip, Florent Paoli, Mathieu Milh, Loic Mace and Stéphane Zaffran

Abstract

International audience6p25 deletion is a rare but well-known entity. The main clinical features include an abnormal facial appearance, developmental delay, and ocular anomalies. Cardiac anomalies are frequently seen but remain poorly delineated. We describe a 4-year-old girl with 6p25.3 deletion, which includes the FOXC1 gene, typical dysmorphic features associated with developmental delay and oculo-motor anomalies. Aortic valve dysplasia was diagnosed early in life. The cardiac lesion progressed very rapidly between the age of 3 and 4 years requiring aortic valve replacement. Genomic analysis of blood and excised valve tissue showed down-regulation of FOXC1 but also FOXC2 expression in the diseased aortic valve. This allows us to speculate on the potential role of FOXC1 in aortic valve anomalies

Topics: 6p25 deletion, aortic valve disease, FOXC1, genetics, [SDV.GEN.GH]Life Sciences [q-bio]/Genetics/Human genetics
Publisher: 'Wiley'
Year: 2017
DOI identifier: 10.1002/ajmg.a.38331
OAI identifier: oai:HAL:hal-01741720v1
Provided by: HAL AMU
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