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Case Report Open Access

Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports

  • Authors:
    • Jiajia Fang
    • Shige Wang
    • Guohua Zhao
    • Li Cao
  • View Affiliations / Copyright

    Affiliations: Department of Neurology, The Fourth Affiliated Hospital, Zhejiang University School of Medicine, Yiwu, Zhejiang 322000, P.R. China, Department of Neurology and Institute of Neurology, Ruijin Hospital Affiliated to Shanghai JiaoTong University School of Medicine, Shanghai 200025, P.R. China
    Copyright: © Fang et al. This is an open access article distributed under the terms of Creative Commons Attribution License.
  • Pages: 309-312
    |
    Published online on: March 17, 2020
       https://doi.org/10.3892/br.2020.1293
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Abstract

Paroxysmal kinesigenic dyskinesia (PKD) is a rare condition characterized by recurrent brief episodes of dystonia, chorea, athetosis or any combination of these, without alterations of consciousness. The proline‑rich transmembrane protein 2 (PRRT2) gene has been widely investigated as a causative gene of PKD. To date, a cluster of pathogenic variants associated with PKD have been identified in the PRRT2 gene. In the present case report, two Chinese patients with sporadic PKD are discussed. Genetic analysis revealed a de novo heterozygous missense mutation, c.955G>T (p.Val319Leu) in exon 3 of the PRRT2 gene. Compared with the commonly reported clinical manifestation of PRRT2‑associated PKD, the patients in this report showed several primary distinctive features. The mutations identified in the present analysis expand upon the mutation spectrum of the PRRT2 gene, and this newly found variant further reinforces the importance of the PRR2 gene in PKD.
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Copy and paste a formatted citation
Spandidos Publications style
Fang J, Wang S, Zhao G and Cao L: Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports. Biomed Rep 12: 309-312, 2020.
APA
Fang, J., Wang, S., Zhao, G., & Cao, L. (2020). Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports. Biomedical Reports, 12, 309-312. https://doi.org/10.3892/br.2020.1293
MLA
Fang, J., Wang, S., Zhao, G., Cao, L."Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports". Biomedical Reports 12.6 (2020): 309-312.
Chicago
Fang, J., Wang, S., Zhao, G., Cao, L."Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports". Biomedical Reports 12, no. 6 (2020): 309-312. https://doi.org/10.3892/br.2020.1293
Copy and paste a formatted citation
x
Spandidos Publications style
Fang J, Wang S, Zhao G and Cao L: Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports. Biomed Rep 12: 309-312, 2020.
APA
Fang, J., Wang, S., Zhao, G., & Cao, L. (2020). Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports. Biomedical Reports, 12, 309-312. https://doi.org/10.3892/br.2020.1293
MLA
Fang, J., Wang, S., Zhao, G., Cao, L."Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports". Biomedical Reports 12.6 (2020): 309-312.
Chicago
Fang, J., Wang, S., Zhao, G., Cao, L."Novel mutation of the PRRT2 gene in two cases of paroxysmal kinesigenic dyskinesia: Two case reports". Biomedical Reports 12, no. 6 (2020): 309-312. https://doi.org/10.3892/br.2020.1293
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