Genetic Risk Factors in Isolated Dystonia Escape Genome-Wide Association Studies

Björn Hergen Laabs, Katja Lohmann, Eva Juliane Vollstedt, Tobias Reinberger, Lisa Marie Nuxoll, Gamze Kilic-Berkmen, Joel S. Perlmutter, Sebastian Loens, Carlos Cruchaga, Andre Franke, Valerija Dobricic, Frauke Hinrichs, Anne Grözinger, Eckart Altenmüller, Steven Bellows, Sylvia Boesch, Susan B. Bressman, Kevin R. Duque, Alberto J. Espay, Andreas FerbertJeanne S. Feuerstein, Samuel Frank, Thomas Gasser, Bernhard Haslinger, Robert Jech, Frank Kaiser, Christoph Kamm, Katja Kollewe, Andrea A. Kühn, Mark S. LeDoux, Ebba Lohmann, Abhimanyu Mahajan, Alexander Münchau, Trisha Multhaupt-Buell, Alexander Pantelyat, Sarah E. Pirio Richardson, Deborah Raymond, Stephen G. Reich, Rachel Saunders Pullman, Barbara Schormair, Nutan Sharma, Azadeh Hamzehei Sichani, Kristina Simonyan, Jens Volkmann, Aparna Wagle Shukla, Juliane Winkelmann, Laura J. Wright, Michael Zech, Kirsten E. Zeuner, Simone Zittel, Meike Kasten, Yan V. Sun, Tobias Bäumer, Norbert Brüggemann, Laurie J. Ozelius, Hyder A. Jinnah, Christine Klein, Inke R. König

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Despite considerable heritability, previous smaller genome-wide association studies (GWASs) have not identified any robust genetic risk factors for isolated dystonia. Objective: The objective of this study was to perform a large-scale GWAS in a well-characterized, multicenter sample of >6000 individuals to identify genetic risk factors for isolated dystonia. Methods: Array-based GWASs were performed on autosomes for 4303 dystonia participants and 2362 healthy control subjects of European ancestry with subgroup analysis based on age at onset, affected body regions, and a newly developed clinical score. Another 736 individuals were used for validation. Results: This GWAS identified no common genome-wide significant loci that could be replicated despite sufficient power to detect meaningful effects. Power analyses imply that the effects of individual variants are likely very small. Conclusions: Moderate single-nucleotide polymorphism–based heritability indicates that common variants do not contribute to isolated dystonia in this cohort. Sequence-based GWASs (eg, by whole-genome sequencing) might help to better understand the genetic basis.

Original languageEnglish
Pages (from-to)2110-2116
Number of pages7
JournalMovement Disorders
Volume39
Issue number11
DOIs
StatePublished - Nov 2024

Keywords

  • GWAS
  • age at onset
  • case–control
  • clinical score
  • isolated dystonia

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