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RFT1-CDG: Absence of Epilepsy and Deafness in Two Patients with Novel Pathogenic Variants
D Quelhas1,2, J Jaeken3, A Fortuna4,5
1Unidade de Bioquímica Genética, Centro de Genética Médica, Centro Hospitalar do Porto, Porto, Portugal. dulce.quelhas@chporto.min-saude.pt.
Abstract:
This report is on two novel patients with RFT1-CDG. Their phenotype is characterized by mild psychomotor disability, behavioral problems, ataxia, and mild dysmorphism. Neither of them shows signs of epilepsy, which was observed in all RFT1-CDG patients reported to date (n = 14). Also, deafness, which is often associated with this condition, was not observed in our patients. Molecular analysis of RFT1 showed biallelic missense variants including three novel ones: c.827G > A (p.G276D), c.73C > T (p.R25W), and c.208T > C (p.C70R).
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