Article (Scientific journals)
Genetic screening of THAP1 in primary dystonia patients of India.
Giri, Subhajit; Naiya, Tufan; Equbal, Zaffar et al.
2017In Neuroscience Letters, 637, p. 31-37
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Keywords :
THAP1; Apoptosis Regulatory Proteins; DNA-Binding Proteins; Dystonic Disorders; Genetic Testing/methods; Humans; India; Male; Mutation/genetics; Nuclear Proteins; Sequence Analysis, DNA; Indian population; Mutation; Primary dystonia; SNP
Abstract :
[en] BACKGROUND: Primary Dystonia is a common movement disorder manifested by dystonic symptoms only. DYT6, a major genetic factor, plays a significant role in primary pure dystonia pathogenesis. In this study we analyzed THAP1 (DYT 6) gene in primary pure dystonia patients, which has been widely studied in other populations but not in Indians. METHODS: The study cohort contained 227 index primary pure dystonia patients with the involvement of cervical region and 254 neurologically control individuals collected from East Indian population. All three exons of THAP1 and their flanking sequences, including exon-intron boundaries, were screened by PCR, DNA sequencing and/or RFLP analysis. RESULTS: A total of three nucleotide variants were detected, which include a reported missense mutation (c.427 A>G; p.Met143Val) in a juvenile onset generalized dystonia patient, a novel frameshift deletion mutation (c.208-209 ΔAA; p.K70VfsX15) in a juvenile onset cervical dystonia patient and a rare variant in 3' UTR of THAP1 (c.*157 T>C) in an adult-onset blepharospasm patient. In addition, two SNPs (rs71521601 and rs111989331) were detected both in the patients and controls with the major allele of the latter being significantly over represented in the patients. CONCLUSIONS: Our study suggests that the THAP1 is likely to have a causative role in the pathogenesis of Indian primary pure dystonia patients. Though the phenotypic spectrum is extensively diverse, the cervical involvement with dystonic tremor and speech problem is common amongst the patients harboring mutations.
Disciplines :
Genetics & genetic processes
Author, co-author :
Giri, Subhajit ;  Université de Liège - ULiège > Stem Cells-Developmental Neurobiology
Naiya, Tufan
Equbal, Zaffar
Sankhla, Charulata Savant
Das, Shyamal Kumar
Ray, Kunal
Ray, Jharna
Language :
English
Title :
Genetic screening of THAP1 in primary dystonia patients of India.
Publication date :
2017
Journal title :
Neuroscience Letters
ISSN :
0304-3940
eISSN :
1872-7972
Publisher :
Elsevier, Netherlands
Volume :
637
Pages :
31-37
Peer reviewed :
Peer Reviewed verified by ORBi
Commentary :
Copyright © 2016 Elsevier Ireland Ltd. All rights reserved.
Available on ORBi :
since 31 May 2020

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