Evidence map›Paper›PMID 19345148›Full record

ArticleThe Lancet. Neurology2009

Mutations in THAP1 (DYT6) and generalised dystonia with prominent spasmodic dysphonia: a genetic screening study.

Ana Djarmati, Susanne A Schneider, Katja Lohmann, Susen Winkler, Heike Pawlack, Johann Hagenah, Norbert Brüggemann, Simone Zittel, Tania Fuchs, Aleksandar Raković and 9 more

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Article in The Lancet. Neurology, 2009. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 59 papers.

0numbers the graph read from it
0cells of the map it votes in
59citing papers in PubMed
14.5field-weighted citation impact, top 1% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

59 citing papers in PubMed, 146 citations in OpenAlex.

  1. Laryngeal dystonia: a comprehensive review of aetiology, clinical presentation, diagnosis, and treatment approaches.European archives of oto-rhino-laryngology : official journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery · 2026
    Review
  2. Article
  3. Spasmodic Dysphonia.World journal of otorhinolaryngology - head and neck surgery · 2025
    Review
  4. Generalized dystonia unraveled: Molecular mechanisms, diagnostic strategies, and treatment paradigms.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025
    Review
  5. Review
  6. Article
  7. Article
  8. Review
  9. Review
  10. Article
  11. Article
  12. Article
  13. Isolated dystonia: clinical and genetic updates.Journal of neural transmission (Vienna, Austria : 1996) · 2021
    Review
  14. Reduced Expression of GABAFrontiers in cell and developmental biology · 2021
    Article
  15. Article
  16. Diverse Mechanisms Lead to Common Dysfunction of Striatal Cholinergic Interneurons in Distinct Genetic Mouse Models of Dystonia.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2019
    Article
  17. Review
  18. Article
  19. Risk Factor Genes in Patients with Dystonia: A Comprehensive Review.Tremor and other hyperkinetic movements (New York, N.Y.) · 2018
    Review
  20. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

19 authors at 7 institutions in 4 countries.

Ana DjarmatiSchilling Department of Clinical and Molecular Neurogenetics, University of Lübeck, Lübeck, Germany.
Susanne A Schneider
Katja Lohmann
Susen Winkler
Heike Pawlack
Johann Hagenah
Norbert Brüggemann
Simone Zittel
Tania Fuchs
Aleksandar Raković
Alexander Schmidt
Hans-Christian Jabusch
Robert Wilcox
Vladimir S Kostić
Hartwig Siebner
Eckart Altenmüller
Alexander Münchau
Laurie J Ozelius
Christine Klein
University of Lübeck · DEIcahn School of Medicine at Mount Sinai · USUniversity Medical Center Hamburg-Eppendorf · DECarl Maria von Weber College of Music · DECopenhagen University Hospital · DKHanover University of Music Drama and Media · DEPrince Charles Hospital · AU

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundDYT6 is a primary, early-onset torsion dystonia; however, unlike in DYT1 dystonia, the symptoms of DYT6 dystonia frequently involve the craniocervical region. Recently, two mutations in THAP1, the gene that encodes THAP (thanatos-associated protein) domain-containing apoptosis-associated protein 1 (THAP1), have been identified as a cause of DYT6 dystonia.

methodsWe screened THAP1 by sequence analysis and quantitative real-time polymerase chain reaction (PCR) in 160 white patients of European ancestry who had dystonia with an early age at onset (n=64), generalised dystonia (n=35), a positive family history of dystonia (n=56), or facial or laryngeal dystonia. Another 160 patients with dystonia were screened for reported and novel variants in THAP1. 280 neurologically healthy controls were screened for the newly identified and previously reported changes in THAP1 and these and an additional 75 controls were screened for a rare non-coding mutation.

findingsWe identified two mutations in THAP1 (388_389delTC and 474delA), respectively, in two (1%) German patients from the 160 patients with dystonia. Both mutation carriers had laryngeal dystonia that started in childhood and both went on to develop generalised dystonia. Thus, two of three patients with early-onset generalised dystonia with orobulbar involvement had mutations in THAP1. One of the identified patients with DYT6 dystonia had two family members with subtle motor signs who also carried the same mutation. A rare substitution in the 5'untranslated region (-236_235GA-->TT) was found in 20 of 320 patients and in seven of 355 controls (p=0.0054).

interpretationAlthough mutations in THAP1 might have only a minor role in patients with different, but mainly focal, forms of dystonia, they do seem to be associated with early-onset generalised dystonia with spasmodic dysphonia. This combination of symptoms might be a characteristic feature of DYT6 dystonia and could be useful in the differential diagnosis of DYT1, DYT4, DYT12, and DYT17 dystonia. In addition to the identified mutations, a rare non-coding substitution in THAP1 might increase the risk of dystonia.

fundingDeutsche Forschungsgemeinschaft; Volkswagen Foundation; Dystonia Medical Research Foundation; University of Lübeck.

Indexed as

AdolescentAdultAgedAge of OnsetApoptosis Regulatory ProteinsChildChild, PreschoolDNA-Binding ProteinsDNA Mutational AnalysisDystoniaFamilyFemaleGenetic TestingHumansInfantMaleApoptosis Regulatory ProteinsDNA-Binding ProteinsNuclear ProteinsTHAP1 protein, human

Identifiers

PMID19345148
OpenAlexW2157939085

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.