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Bharat Kumar Surisetti 1 Article
Utility of Clinical Exome Sequencing in Dystonia: A Single-Center Study From India
Vikram Venkappayya Holla, Koti Neeraja, Albert Stezin, Shweta Prasad, Bharat Kumar Surisetti, Manjunath Netravathi, Nitish Kamble, Ravi Yadav, Pramod Kumar Pal
J Mov Disord. 2022;15(2):156-161.   Published online March 16, 2022
DOI: https://doi.org/10.14802/jmd.21146
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AbstractAbstract PDFSupplementary Material
Objective
With the use of next-generation sequencing in clinical practice, several genetic etiologies of dystonia have been identified. This study aimed to ascertain the utility of clinical exome sequencing (CES) in dystonia and factors suggestive of a genetic etiology.
Methods
This study was a retrospective chart review of patients with dystonia who had undergone CES for the evaluation of dystonia.
Results
Forty-eight patients (35 males, 46 families) with dystonia were studied, with a mean age at onset of 16.0 ± 14.1 (1–58) years. A pathogenic/likely pathogenic variant was found in 20 patients (41.7%) among which 14 patients (29.2%) carried a novel variant. CES was more likely to detect a genetic diagnosis in patients with an early age at onset, i.e., ≤ 20 years.
Conclusion
CES is a useful tool in the diagnostic evaluation of dystonia, with a yield of close to 40%. Patients with an earlier age at onset have a higher likelihood of having dystonia due to a genetic cause than those with a later age at onset.

Citations

Citations to this article as recorded by  
  • Whole exome sequencing and clinical investigation of young onset dystonia: What can we learn?
    Jong Hyeon Ahn, Ah Reum Kim, Woong-Yang Park, Jin Whan Cho, Jongkyu Park, Jinyoung Youn
    Parkinsonism & Related Disorders.2023; 115: 105814.     CrossRef

JMD : Journal of Movement Disorders