ArticleMovement disorders clinical practice2025
Polygenic Risk Score Combined with Transcranial Sonography Refines Parkinson's Disease Risk Prediction.
Article in Movement disorders clinical practice, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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
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Who cites it
3 citing papers in PubMed.
- Genetic architecture and molecular pathogenesis of Parkinson's disease: emerging mechanisms and therapeutic targets.Metabolic brain disease · 2026Review
- Review
- NFκB1: a common biomarker linking Alzheimer's and Parkinson's disease pathology.Frontiers in neuroscience · 2025Article
Corrections and comments
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Authors and funding
8 authors.
Funding
Abstract
backgroundDopaminergic neuron depletion in the substantia nigra (SN) and the pathological aggregation of α-synuclein are the neuropathological hallmarks of Parkinson's disease (PD).
objectivesThis study aimed to investigate the association between the polygenic risk score for PD (PD-PRS) and transcranial sonography (TCS)-measured SN hyperechogenicity to enhance the accuracy of PD susceptibility prediction.
methodsPD-PRSs were calculated for over 41,000 Estonian Biobank participants age 55+ years without a PD diagnosis. Participants in the highest and lowest PD-PRS percentiles (n = 222) underwent TCS measurements and Sniffin' sticks olfactory testing. A multivariable logistic regression model was used to examine the associations between PD-PRS, risk and prodromal markers, and SN hyperechogenicity.
resultsData from 204 participants with TCS measurements were analyzed, including 107 individuals in the high-risk PD-PRS group and 97 in the low-risk PD-PRS group. Incorporating PD-PRS group assignment improved the explained variance in SN hyperechogenicity from 17.2% to 31.9%. Participants in the low-risk PD-PRS group had 0.16 times lower odds (95% confidence interval (CI) = 0.07-0.35, P < 0.001) of developing SN hyperechogenicity compared to high-risk PD-PRS individuals. Each unit increase in the Sniffin' sticks olfactory test score was significantly associated with reduced odds of SN hyperechogenicity (adjusted odds ratio = 0.60, 95% CI = 0.47-0.78, P = 0.002).
conclusionsOur findings indicate that TCS-measured SN hyperechogenicity is associated with PD-PRS and olfactory impairment. This combined assessment may improve early diagnosis of prodromal PD by pinpointing individuals at increased risk.
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