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A new case of de novo 19p13.2p13.12 deletion in a girl with overgrowth and severe developmental delay

Abstract : Background: We report clinical and molecular cytogenetic characterization of a 2 year-old girl with 19p13.2p13.12 microdeletion and compare her clinical features with those of three other patients reported before. Result: Array comparative genomic hybridization (aCGH) revealed in the present patient a de novo microdeletion of 1.45 Mb within 19p13.2p13.12. The deletion includes seven OMIM genes: MAN2B1, RNASEH2A, KLF1, GCDH, NFIX, CACNA1A and CC2D1A. Discussion: The present case and three other patients with partially overlapping 19p13 microdeletion share the following features: psychomotor and language delay, intellectual disability, seizures, hypotonia, skeletal anomalies and facial dysmorphism. The smallest region of overlapping between all four reported patients is around 300 kb and spans only two genes: NFIX and CACNA1A. Their haploinsufficincy could be the base for the phenotype -genotype correlation.
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Abdelhafid Natiq, Siham Chafai Elalaoui, Sevrine Miesch, Céline Bonnet, Philippe Jonveaux, et al.. A new case of de novo 19p13.2p13.12 deletion in a girl with overgrowth and severe developmental delay. Molecular Cytogenetics, BioMed Central, 2014, 7, pp.40. ⟨10.1186/1755-8166-7-40⟩. ⟨hal-01687084⟩

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