Utilize este identificador para referenciar este registo: http://hdl.handle.net/10400.18/3926
Título: A 1.77 Mb deletion in 3p26.3 encompassing CNTN6 and CNTN4 genes: case report
Autor: Brito, Filomena
Marques, Bárbara
Pedro, Sónia
Serafim, Silvia
Gonçalves, Rui
Freixo, João
Correia, Hildeberto
Palavras-chave: Intellectual Disability
3p26.3 Deletion
CNTN6 gene
CNTN4 gene
Doenças Genéticas
Data: Mai-2016
Editora: Nature Publishing Group/European Society of Human Genetics
Citação: Eur J Hum Genet. 2016;24(S1):159
Resumo: Chromosome microarray analysis is a powerful diagnostic tool and is being used as a first-line approach to detect chromosome imbalances associated with intellectual disability, dysmorphic features and congenital abnormalities. This test enables the identification of new copy number variants (CNVs) and their association with new microdeletion/microduplication syndromes in patients previously without diagnosis. We report the case of a 7 year-old female with moderate intellectual disability, severe speech delay and auto and hetero aggressivity with a previous 45,XX,der(13;14)mat karyotype performed at a younger age. Affymetrix CytoScan 750K chromosome microarray analysis was performed detecting a 1.77 Mb deletion at 3p26.3, encompassing 2 OMIM genes, CNTN6 and CNTN4. These genes play an important role in the formation, maintenance, and plasticity of functional neuronal networks. Deletions or mutations in CNTN4 gene have been implicated in intellectual disability and learning disabilities. Disruptions or deletions in the CNTN6 gene have been associated with development delay and other neurodevelopmental disorders. The haploinsufficiency of these genes has been suggested to participate to the typical clinical features of 3p deletion syndrome. Nevertheless inheritance from a healthy parent has been reported, suggesting incomplete penetrance and variable phenotype for this CNV. We compare our patient with other similar reported cases, adding additional value to the phenotype-genotype correlation of deletions in this region.
Peer review: yes
URI: http://hdl.handle.net/10400.18/3926
Versão do Editor: https://www.eshg.org/fileadmin/www.eshg.org/conferences/2016/downloads/ESHG2016_Abstracts_final.pdf
Aparece nas colecções:DGH - Posters/abstracts em congressos internacionais

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