Polygenic scores for disease risk are not associated with clinical outcomes in Parkinson's disease

Tan, Manuela, Iwaki, Hirotaka, Bandres-Ciga, Sara, Sosero, Yuri, Shoai, Maryam, Brockmann, Kathrin, Williams, Nigel ORCID: https://orcid.org/0000-0003-1177-6931, Alcalay, Roy, Maple-Grødem, Jodi, Alves, Guido, Tysnes, Ole-Bjørn, Auinger, Peggy, Eberly, Shirley, Heutink, Peter, Simon, David, Kieburtz, Karl, Hardy, John, Williams-Gray, Caroline, Grosset, Donald, Corvol, Jean-Christophe, Gan-Or, Ziv, Toft, Mathias and Pihlstrøm, Lasse 2025. Polygenic scores for disease risk are not associated with clinical outcomes in Parkinson's disease. [Online]. medRxiv: openRxiv. Available at: https://doi.org/10.1101/2025.01.31.25321395

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Abstract

Polygenic risk scores (PRS) in Parkinson's disease (PD) are associated with disease risk. Recently, pathway-specific PRS have been created to take advantage of annotations inking variants to biological pathways or cell types. Here, we investigated 8 biological pathways or regions of open chromatin using pathway-specific PRS: alpha-synuclein pathway, adaptive immunity, innate immunity, lysosomal pathway1, endocytic membrane-trafficking pathway, mitochondrial pathway, microglial open chromatin single nucleotide polymorphisms (SNPs), and monocyte open chromatin SNPs. We analysed 7,402 PD patients across 18 'in-person' PD cohorts, and 6,717 patients from the online Fox Insight study. We did not find any significant associations between the 8 pathway-specific PRSs and 8 clinical outcomes in PD. Though this may be due to a lack of statistical power and limited sample size, it may also suggest that the genetic architecture of sporadic PD risk is different from the genetics of PD progression and clinical outcomes.

Item Type:	Website Content
Date Type:	Published Online
Status:	Submitted
Schools:	Schools > Medicine
Publisher:	openRxiv
Date of Acceptance:	20 February 2025
Last Modified:	28 Oct 2025 12:45
URI:	https://orca.cardiff.ac.uk/id/eprint/181931

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