Novel THAP1 gene mutations in patients with primary dystonia from Southwest China

作者：Song, Wei; Chen, YongPing; Huang, Rui; Chen, Ke; Pan, PingLei; Yang, Yuan; Shang, Hui-Fang^*

来源：Journal of the Neurological Sciences, 2011, 309(1-2): 63-67.

DOI：10.1016/j.jns.2011.07.023

• Primary dystonia
• Clinical feature
• DYT6/THAP1 gene
• Mutation

Background: Clinical presentation and DYT6/THAP1 mutations among Chinese patients with primary dystonia have not been well studied. @@@ Methods: Patients with primary pure dystonia from Southwest China who did not have a mutation in DYT1 exon 5 were included in the present study. Mutations of the THAP1 gene were screened by direct sequencing. @@@ Results: A total of 231 patients were examined. Cervical dystonia (58.47%) was found to be the most frequent form of focal dystonia. Novel heterozygous missense mutation [c.521A>G (p.E174G)] was found in exon 3 of the THAP1 gene in one patient and one insertion mutation [c.214_215InsA (p.L72fsX86)] in exon 2 in another. Initial symptoms of patients with these mutations were early-onset cervical dystonia. Both patients had no dysarthria. A silent change [c.489C>G (p.L63L)] in exon 3 was identified in three patients with Meige syndrome. @@@ Conclusion: The mutation frequency of the THAP1 gene was 0.87% in Chinese patients with primary pure dystonia, similar to the mutation frequency found in other ethnic groups. Patients presenting with early-onset cervical dystonia should be screened for THAP1 gene mutations to fully assess all the possible etiologies of dystonia. Further studies are needed for p.L63L in THAP1 in Meige syndrome.

• 出版日期2011-10-15
• 单位四川大学