Evidence map›Paper›PMID 41476372›Full record

ArticleEpilepsia open2026

A two-sample Mendelian randomization study and mediation analysis exploring the link between cathepsins and epilepsy.

Huaiyu Sun, Di Ma, Wuqiong Zhang, Shuai Hou, Zhiqing Chen, Xuewei Li, Hongmei Meng, Daguang Zhang

Abstract read
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Article in Epilepsia open, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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1citing papers in PubMed
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1 · What the graph read from it

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3 · Its place in the literature

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1 citing paper in PubMed.

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4 · The record

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5 · Who and what money

Authors and funding

8 authors.

Huaiyu SunNeurology Department, First Hospital of Jilin University, Changchun, Jilin, China.
Di MaNeurology Department, First Hospital of Jilin University, Changchun, Jilin, China.
Wuqiong ZhangNeurology Department, First Hospital of Jilin University, Changchun, Jilin, China.
Shuai HouNeurology Department, First Hospital of Jilin University, Changchun, Jilin, China.
Zhiqing ChenNeurology Department, First Hospital of Jilin University, Changchun, Jilin, China.
Xuewei LiRadiology Department, First Hospital of Jilin University, Changchun, Jilin, China.
Hongmei MengNeurology Department, First Hospital of Jilin University, Changchun, Jilin, China.ORCID 0000-0001-6418-7300
Daguang ZhangBone and Joint Surgery Department, First Hospital of Jilin University, Changchun, Jilin, China.

Funding

Department of Science and Technology of Jilin Province 0230505030ZPHealth Commission of Jilin Province 2024A020
6 · The paper itself

Abstract

objectiveThis study aims to investigate the causal relationship between cathepsins and epilepsy, using Mendelian randomization (MR) and mediation analysis.

methodsPublicly accessible summary statistics on epilepsy were obtained from FinnGen and the International League Against Epilepsy Consortium. Cathepsin genome-wide association data were provided by the IEU OpenGWAS. To evaluate the causal relationship between epilepsy and cathepsins, we conducted a bidirectional two-sample Mendelian randomization (MR) and mediation analysis.

resultsThe results of the MR analysis revealed that elevated cathepsin E levels correlated with a higher likelihood of developing generalized epilepsy (odds ratio: 1.304, 95% confidence interval: 1.127-1.508, p: 0.0004, p adjusted for false discovery rate: 0.044). The mediation analysis identified a disintegrin and metalloproteinase with thrombospondin motifs 4 as having a notable impact (mediation effect: 23.5%) in the causal link between cathepsin E and generalized epilepsy. SIGNIFICANCE: This study provides evidence of a causal relationship between cathepsin E and generalized epilepsy, suggesting that elevated cathepsin E levels may increase the risk of developing this condition. The identification of a disintegrin and metalloproteinase with thrombospondin motifs 4 as a mediator offers insight into the molecular mechanisms underlying this association, which could guide future research into potential therapeutic targets for epilepsy. PLAIN LANGUAGE SUMMARY: Epilepsy is a common neurological disorder, but some patients do not respond to standard treatments. This study looks at a protein family called cathepsins and how they might be linked to epilepsy. We found that higher levels of cathepsin E are associated with a higher chance of generalized epilepsy. Our results suggest that cathepsin E could play a key role in causing epilepsy, which could lead to new treatment options for patients who do not respond to current therapies.

Indexed as

Cathepsin ECathepsinsEpilepsyEpilepsy, GeneralizedMendelian Randomization AnalysisGenome-Wide Association StudyHumansMediation AnalysisPolymorphism, Single NucleotideCathepsin ECathepsinsbidirectional causal effectscathepsinsepilepsymediation analysisMendelian randomization

Identifiers

PMID41476372
PMCPMC12903826

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