Observational studyJournal of neurology2022
Narcolepsy genetic marker HLA DQB1*06:02 and excessive daytime sleepiness in Parkinson disease patients treated with dopaminergic agents.
Observational study in Journal of neurology, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers, 1 of them a synthesis that pooled it.
What it found
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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.
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.
Who cites it
3 citing papers in PubMed, 1 synthesis or guideline pooled it, 5 citations in OpenAlex.
- Human leukocyte antigen in Parkinson's disease: A systematic review and meta-analysis of risk and clinical attributes.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2025Pooled it
- Daytime sleepiness in Parkinson's disease: a multifaceted symptom.Frontiers in sleep · 2023Review
- Excessive Daytime Sleepiness in Parkinson's Disease.Nature and science of sleep · 2022Review
Corrections and comments
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Authors and funding
5 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
objectiveTo determine whether narcolepsy Human Leukocyte Antigen (HLA) risk allele DQB1*0602 is associated with excessive daytime sleepiness (EDS) and inappropriate sleep in patients with Parkinson disease (PD).
backgroundEDS is a common and disabling non-motor manifestation of PD, affecting quality of life and driving performance. DQB1*0602 is an HLA risk allele for narcolepsy. It is present in 12-30% of the general population. We hypothesize that DQB1*0602 is associated with an increased risk of EDS and inappropriate sleep in PD patients.
methodsThis was a cross-sectional observational study of 150 PD individuals on dopaminergic agents. Main outcome measures were DQB1*0602 status and the modified Epworth Sleepiness Scale. Individuals with dementia, loss of independence, narcolepsy and untreated sleep apnea were excluded. Confounding variables for EDS were assessed using Parkinson Disease Sleep Scale, Mayo Sleep Questionnaire, Unified PD Rating Scale, Hoehn and Yahr scale.
resultsDQB1*06:02 positive PD patients were approximately three times more likely to experience EDS and fall asleep inappropriately during activities that required sustained alertness (e.g. driving, eating, attending work etc.). Exploratory post hoc analysis showed a dopaminergic drug dose- and type- dependent effect on daytime sleepiness in DQB1*06:02 positive individuals. No significant differences were found in confounding variables.
conclusionPD individuals are more likely to experience EDS and fall asleep inappropriately during activities if DQB1*0602 positive. Genetic vulnerability may explain EDS risk in PD.
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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.