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Dzinovic I, Boesch S, Škorvánek M, Necpál J, Švantnerová J, Pavelekova P, Havránková P, Tsoma E, Indelicato E, Runkel E, Held V, Weise D, Janzarik W, Eckenweiler M, Berweck S, Mall V, Haslinger B, Jech R, Winkelmann J, Zech M. Genetic overlap between dystonia and other neurologic disorders: A study of 1,100 exomes. Parkinsonism Relat Disord 2022; 102:1-6. [PMID: 35872528 DOI: 10.1016/j.parkreldis.2022.07.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2022] [Revised: 06/29/2022] [Accepted: 07/08/2022] [Indexed: 10/17/2022]
Abstract
INTRODUCTION Although shared genetic factors have been previously reported between dystonia and other neurologic conditions, no sequencing study exploring such links is available. In a large dystonic cohort, we aimed at analyzing the proportions of causative variants in genes associated with disease categories other than dystonia. METHODS Gene findings related to whole-exome sequencing-derived diagnoses in 1100 dystonia index cases were compared with expert-curated molecular testing panels for ataxia, parkinsonism, spastic paraplegia, neuropathy, epilepsy, and intellectual disability. RESULTS Among 220 diagnosed patients, 21% had variants in ataxia-linked genes; 15% in parkinsonism-linked genes; 15% in spastic-paraplegia-linked genes; 12% in neuropathy-linked genes; 32% in epilepsy-linked genes; and 65% in intellectual-disability-linked genes. Most diagnosed presentations (80%) were related to genes listed in ≥1 studied panel; 71% of the involved loci were found in the non-dystonia panels but not in an expert-curated gene list for dystonia. CONCLUSIONS Our study indicates a convergence in the genetics of dystonia and other neurologic phenotypes, informing diagnostic evaluation strategies and pathophysiological considerations.
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Affiliation(s)
- Ivana Dzinovic
- Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany; Institute of Human Genetics, School of Medicine, Technical University of Munich, Munich, Germany
| | - Sylvia Boesch
- Department of Neurology, Medical University of Innsbruck, Innsbruck, Austria
| | - Matej Škorvánek
- Department of Neurology, P.J. Safarik University, Kosice, Slovak Republic; Department of Neurology, University Hospital of L. Pasteur, Kosice, Slovak Republic
| | - Ján Necpál
- Department of Neurology, Zvolen Hospital, Slovakia
| | - Jana Švantnerová
- Second Department of Neurology, Faculty of Medicine, Comenius University, University Hospital Bratislava, Bratislava, Slovakia
| | - Petra Pavelekova
- Department of Neurology, P.J. Safarik University, Kosice, Slovak Republic; Department of Neurology, University Hospital of L. Pasteur, Kosice, Slovak Republic
| | - Petra Havránková
- Department of Neurology, Charles University, 1st Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Eugenia Tsoma
- Regional Clinical Center of Neurosurgery and Neurology, Department of Family Medicine and Outpatient Care, Uzhhorod National University, Uzhhorod, Ukraine
| | | | - Eva Runkel
- Klinikum Aschaffenburg-Alzenau, Aschaffenburg, Germany
| | - Valentin Held
- Department of Neurology, Medical Faculty Mannheim, Heidelberg University, Mannheim, Germany
| | - David Weise
- Klinik für Neurologie, Asklepios Fachklinikum Stadtroda, Stadtroda, Germany; Department of Neurology, University of Leipzig, Leipzig, Germany
| | - Wibke Janzarik
- Department of Neuropediatrics and Muscle Disorders, University Medical Center, Faculty of Medicine, University of Freiburg, Germany
| | - Matthias Eckenweiler
- Department of Neuropediatrics and Muscle Disorders, University Medical Center, Faculty of Medicine, University of Freiburg, Germany
| | - Steffen Berweck
- Ludwig Maximilian University of Munich, Munich, Germany; Hospital for Neuropediatrics and Neurological Rehabilitation, Centre of Epilepsy for Children and Adolescents, Schoen Klinik Vogtareuth, Vogtareuth, Germany
| | - Volker Mall
- Lehrstuhl für Sozialpädiatrie, Technische Universität München, Munich, Germany; kbo-Kinderzentrum München, Munich, Germany
| | - Bernhard Haslinger
- Department of Neurology, Klinikum rechts der Isar, Technical University of Munich, School of Medicine, Munich, Germany
| | - Robert Jech
- Department of Neurology, Charles University, 1st Faculty of Medicine and General University Hospital in Prague, Prague, Czech Republic
| | - Juliane Winkelmann
- Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany; Institute of Human Genetics, School of Medicine, Technical University of Munich, Munich, Germany; Lehrstuhl für Neurogenetik, Technische Universität München, Munich, Germany; Munich Cluster for Systems Neurology, SyNergy, Munich, Germany
| | - Michael Zech
- Institute of Neurogenomics, Helmholtz Zentrum München, Munich, Germany; Institute of Human Genetics, School of Medicine, Technical University of Munich, Munich, Germany.
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