Evidence map›Paper›PMID 34981563›Full record

ArticleAnnals of neurology2022

Risk Factors for Phenoconversion in Rapid Eye Movement Sleep Behavior Disorder.

Hui Zhang, Alex Iranzo, Birgit Högl, Isabelle Arnulf, Luigi Ferini-Strambi, Raffaele Manni, Tomoyuki Miyamoto, Wolfgang H Oertel, Yves Dauvilliers, Yo-Ei Ju and 15 more

Abstract read
PubMed Publisher
In one paragraph

Article in Annals of neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 1 pooled it
7.2field-weighted citation impact, top 2% 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

37 citing papers in PubMed, 1 synthesis or guideline pooled it, 60 citations in OpenAlex.

  1. Pooled it
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  4. Article
  5. Article
  6. Article
  7. Coffee Consumption Is Associated With Later Age-at-Onset of Parkinson's Disease.Annals of clinical and translational neurology · 2025
    Article
  8. Article
  9. Article
  10. Review
  11. Validation of automated detection of REM sleep without atonia using in-laboratory and in-home recordings.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Article
  12. Article
  13. Clinical characteristics and phenoconversion in isolated REM sleep behavior disorder: a prospective single-center study in Korea, compared with Montreal cohort.Journal of clinical sleep medicine : JCSM : official publication of the American Academy of Sleep Medicine · 2025
    Article
  14. Article
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

25 authors at 16 institutions in 10 countries.

Hui ZhangDepartment of Neurology, Xuanwu Hospital Capital Medical University, Beijing, China.ORCID 0000-0001-8526-4440
Alex IranzoNeurology Service, Hospital Clinic of Barcelona, August Pi i Sunyer Biomedical Research Institute, Center for Biomedical Research on Neurodegenerative Diseases, Barcelona, Spain.
Birgit HöglDepartment of Neurology, Innsbruck Medical University, Innsbruck, Austria.
Isabelle ArnulfParis Brain Institute and Sleep Disorder Unit, Pitié-Salpêtrière Hospital, Public Hospital Network of Paris, Sorbonne University, Paris, France.
Luigi Ferini-StrambiSleep Disorders Center, Vita-Salute San Raffaele University, Milan, Italy.ORCID 0000-0003-2867-5424
Raffaele ManniC. Mondino National Neurological Institute, Pavia, Italy.
Tomoyuki MiyamotoDepartment of Neurology, Dokkyo Medical University Saitama Medical Center, Saitama, Japan.ORCID 0000-0002-6535-8260
Wolfgang H OertelDepartment of Neurology, Philipps University, Marburg, Germany.
Yves DauvilliersDepartment of Neurology, Gui de Chauliac Hospital, Montpellier, National Institute of Health and Medical Research U1061, Montpellier, France.ORCID 0000-0003-0683-6506
Yo-Ei JuDepartment of Neurology, Washington University School of Medicine, St Louis, MO, USA.ORCID 0000-0001-9397-7475
Monica PulighedduSleep Center, Department of Cardiovascular and Neurological Sciences, University of Cagliari, Cagliari, Italy.
Karel SonkaDepartment of Neurology, First Faculty of Medicine, Charles University and General University Hospital, Prague, Czech Republic.
Amélie PelletierCenter for Advanced Studies in Sleep Medicine, Montreal Sacred Heart Hospital, Montreal, Quebec, Canada.
Jacques Y MontplaisirCenter for Advanced Studies in Sleep Medicine, Montreal Sacred Heart Hospital, Montreal, Quebec, Canada.
Ambra StefaniDepartment of Neurology, Innsbruck Medical University, Innsbruck, Austria.
Abubaker IbrahimDepartment of Neurology, Innsbruck Medical University, Innsbruck, Austria.
Birgit FrauscherDepartment of Neurology, Innsbruck Medical University, Innsbruck, Austria.ORCID 0000-0001-6064-1529
Smaranda Leu-SemenescuParis Brain Institute and Sleep Disorder Unit, Pitié-Salpêtrière Hospital, Public Hospital Network of Paris, Sorbonne University, Paris, France.
Marco ZucconiSleep Disorders Center, Vita-Salute San Raffaele University, Milan, Italy.
Michele TerzaghiC. Mondino National Neurological Institute, Pavia, Italy.ORCID 0000-0001-9692-2218
Masayuki MiyamotoDepartment of Neurology, Dokkyo Medical University School of Medicine, Tochigi, Japan.
Annette JanzenDepartment of Neurology, Philipps University, Marburg, Germany.ORCID 0000-0001-8907-5831
Michela FigorilliSleep Center, Department of Cardiovascular and Neurological Sciences, University of Cagliari, Cagliari, Italy.
Maria L FantiniSleep Center, Department of Cardiovascular and Neurological Sciences, University of Cagliari, Cagliari, Italy.
Ronald B PostumaDepartment of Neurology, McGill University, Montreal General Hospital, Montreal, Quebec, Canada.ORCID 0000-0002-6468-4734
Innsbruck Medical University · ATUniversity of Cagliari · ITFondazione Istituto Neurologico Nazionale Casimiro Mondino · ITHôpital du Sacré-Cœur de Montréal · CAPhilipps University of Marburg · DESorbonne Université · FRVita-Salute San Raffaele University · IT23andMe (United States) · USCapital Medical University · CNCharles University · CZDokkyo Medical University · JPHospital Clínic de Barcelona · ESMontreal General Hospital · CAMontreal Neurological Institute and Hospital · CASocial Insurance Saitama Chuo Hospital · JPWashington University in St. Louis · US

Funding

CIHR
6 · The paper itself

Abstract

objectiveThis study was undertaken to follow up predictive factors for α-synuclein-related neurodegenerative diseases in a multicenter cohort of idiopathic/isolated rapid eye movement sleep behavior disorder (iRBD).

methodsPatients with iRBD from 12 centers underwent a detailed assessment for potential environmental and lifestyle risk factors via a standardized questionnaire at baseline. Patients were then prospectively followed and received assessments for parkinsonism or dementia during follow-up. The cumulative incidence of parkinsonism or dementia was estimated with competing risk analysis. Cox regression analyses were used to evaluate the predictive value of environmental/lifestyle factors over a follow-up period of 11 years, adjusting for age, sex, and center.

resultsOf 319 patients who were free of parkinsonism or dementia, 281 provided follow-up information. After a mean follow-up of 5.8 years, 130 (46.3%) patients developed neurodegenerative disease. The overall phenoconversion rate was 24.2% after 3 years, 44.8% after 6 years, and 67.5% after 10 years. Patients with older age (adjusted hazard ratio [aHR] = 1.05) and nitrate derivative use (aHR = 2.18) were more likely to phenoconvert, whereas prior pesticide exposure (aHR = 0.21-0.64), rural living (aHR = 0.53), lipid-lowering medication use (aHR = 0.59), and respiratory medication use (aHR = 0.36) were associated with lower phenoconversion risk. Risk factors for those converting to primary dementia and parkinsonism were generally similar, with dementia-first converters having lower coffee intake and beta-blocker intake, and higher occurrence of family history of dementia.

interpretationOur findings elucidate the predictive values of environmental factors and comorbid conditions in identifying RBD patients at higher risk of phenoconversion. ANN NEUROL 2022;91:404-416.

Indexed as

AgedDementiaDisease ProgressionFollow-Up StudiesHumansIncidenceLife StyleMaleMiddle AgedNeurodegenerative DiseasesREM Sleep Behavior DisorderRisk FactorsSurveys and Questionnaires

Identifiers

PMID34981563
OpenAlexW4206203176

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.