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- W2111748811 abstract "GNE myopathy is an autosomal recessive distal myopathy caused by biallelic mutation in the GNE gene. It shows great genetic heterogeneity among different ethnic groups. In this study, we summarized the mutational spectrum and clinical profiles in 35 unrelated GNE myopathy patients from mainland China. Molecular analysis revealed 16 novel (p.G47D, p.F66Y, p.E173A, p.Y186H, p.R246L, p.R263*, p.R306*, p.A366D, p.V512M, p.C520Y, p.G545R, p.G548S, p.V622G, p.A638P, IVS2+1G>A and c.2112delC) and 13 reported mutations. Notably, the p.D176V mutation was detected in 65.7% (23/35) of this patient cohort, giving an allele frequency of 34.3% (24/70). We estimated the carrier frequency of p.D176V to be 0.19% (1/520) in the normal population, although haplotype analysis indicated no founder effect in the patients carrying p.D176V mutation. Clinically, 29 patients presented with the classic phenotype of predominant distal weakness, while six patients presented with atypical phenotype. However, muscle magnetic resonance imaging showed that the vastus lateralis was spared in both subgroups. In conclusion, p.D176V mutation in the GNE gene, which was the second most common mutation in Japanese patients, was the most common mutation in this cohort of Chinese patients. Novel GNE mutations found in this study expanded the mutational spectrum associated with GNE myopathy. There is phenotypic heterogeneity among patients with GNE myopathy, but muscle magnetic resonance imaging can be useful for differential diagnosis." @default.
- W2111748811 created "2016-06-24" @default.
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- W2111748811 date "2015-07-01" @default.
- W2111748811 modified "2023-10-17" @default.
- W2111748811 title "Mutational spectrum and clinical features in 35 unrelated mainland Chinese patients with GNE myopathy" @default.
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- W2111748811 doi "https://doi.org/10.1016/j.jns.2015.04.028" @default.
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