Cited by 548Parkinson's Disease Mechanisms and TreatmentsDementia and Cognitive Impairment ResearchSleep and related disorders

Neurodegenerative Disorder Risk in Idiopathic REM Sleep Behavior Disorder: Study in 174 Patients

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Iranzo, Alex, Fernández-Arcos, Ana, Tolosa, Eduard, Serradell, Mónica, Molinuevo, José Luis, Valldeoriola, Francesc, Gelpi, Ellen, Vilaseca, Isabel +4 more·2014·PLoS ONE

Abstract

OBJECTIVE: To estimate the risk for developing a defined neurodegenerative syndrome in a large cohort of idiopathic REM sleep behavior disorder (IRBD) patients with long follow-up. METHODS: Using the Kaplan-Meier method, we estimated the disease-free survival rate from defined neurodegenerative syndromes in all the consecutive IRBD patients diagnosed and followed-up in our tertiary referal sleep center between November 1991 and July 2013. RESULTS: The cohort comprises 174 patients with a median age at diagnosis of IRBD of 69 years and a median follow-up of four years. The risk of a defined neurodegenerative syndrome from the time of IRBD diagnosis was 33.1% at five years, 75.7% at ten years, and 90.9% at 14 years. The median conversion time was 7.5 years. Emerging diagnoses (37.4%) were dementia with Lewy bodies (DLB) in 29 subjects, Parkinson disease (PD) in 22, multiple system atrophy (MSA) in two, and mild cognitive impairment (MCI) in 12. In six cases, in whom postmortem was performed, neuropathological examination disclosed neuronal loss and widespread Lewy-type pathology in the brain in each case. CONCLUSIONS: In a large IRBD cohort diagnosed in a tertiary referal sleep center, prolonged follow-up indicated that the majority of patients are eventually diagnosed with the synucleinopathies PD, DLB and less frequently MSA. IRBD represented the prodromal period of these conditions. Our findings in IRBD have important implications in clinical practice, in the investigation of the early pathological events occurring in the synucleinopathies, and for the design of interventions with potential disease-modifying agents.

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Authors
Iranzo, A., Fernández-Arcos, A., Tolosa, E., Serradell, M., Molinuevo, J. L., Valldeoriola, F., Gelpi, E., Vilaseca, I., Sánchez-Valle, R., Lladó, A., Gaig, C., & Santamaría, J.
Affiliations
  • Biomedical Research Networking Center on Neurodegenerative Diseases (ES)
  • Hospital Clínic de Barcelona (ES)
  • Centro de Investigación Biomédica en Red de Enfermedades Respiratorias (ES)
Venue
PLoS ONE
Published
2014-02-26
Volume
9
Issue
2
Pages
e89741
ISSN
1932-6203 (ISSN-L)
OpenAlex
W2023130608
Cited by
548
References
41
Citations by year
2026: 41 · 2025: 48 · 2024: 39 · 2023: 41 · 2022: 45 · 2021: 44 · 2020: 52 · 2019: 50 · 2018: 52 · 2017: 63 · 2016: 40 · 2015: 28 · 2014: 5
FWCI
29.54
Type
journal article
Language
en
Open access
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Dipòsit Digital de la Universitat de Barcelona (Universitat de Barcelona) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Topics
  • Health Sciences › Medicine › Neurology › Parkinson's Disease Mechanisms and Treatments
  • Health Sciences › Medicine › Psychiatry and Mental health › Dementia and Cognitive Impairment Research
  • Social Sciences › Psychology › Experimental and Cognitive Psychology › Sleep and related disorders
Keywords
idiopathic REM sleep behavior disorder, neurodegenerative disease risk, synucleinopathies, dementia with Lewy bodies, Parkinson's disease, multiple system atrophy, mild cognitive impairment, prodromal period, Lewy body pathology, disease-free survival
MeSH terms
Aged, Humans, Middle Aged, Cohort Studies, Disease-Free Survival, Neurodegenerative Diseases, REM Sleep Behavior Disorder, Kaplan-Meier Estimate

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