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Circulating fatty acids and risk of primary open-angle glaucoma: A mendelian randomization study
Jing Bao1, Ze Yang2, Sifan Zheng3
1Department of Ophthalmology, The Second Affiliated Hospital, Zhejiang University School of Medicine, Hangzhou, Zhejiang, China; Zhejiang Provincial Key Lab of Ophthalmology, Hangzhou, Zhejiang, China.
Gene
|November 28, 2021
Summary
This study found no genetic evidence linking ten common fatty acids (FAs) to primary open-angle glaucoma (POAG). Further research is needed to clarify the complex relationship between FAs and glaucoma risk.
Area of Science:
- Ophthalmology
- Nutritional Science
- Genetics
Background:
- The link between fatty acids (FAs) and glaucoma is debated, with existing observational studies yielding controversial results.
- Understanding the causal relationship is crucial for potential preventative or therapeutic strategies.
Purpose of the Study:
- To investigate the potential causal association between circulating fatty acids and primary open-angle glaucoma (POAG).
- Utilizing a Mendelian randomization (MR) approach to overcome limitations of observational studies.
Main Methods:
- A two-sample Mendelian randomization (MR) study was conducted.
- Fourteen single nucleotide polymorphisms (SNPs) for ten fatty acids were used as instrumental variables.
- Genome-wide association study summary statistics for POAG from a large meta-analysis of European ancestry individuals were analyzed.
Main Results:
- The inverse-variance weighted (IVW) method revealed no statistically significant causal effects of the ten fatty acids on POAG.
- Sensitivity analyses confirmed the absence of significant pleiotropy, strengthening the findings.
- Specific odds ratios (ORs) and confidence intervals (CIs) for each fatty acid showed no evidence of association.
Conclusions:
- This MR study provides no support for a causal role of the investigated fatty acids in the development of POAG.
- The findings suggest that circulating fatty acid levels may not be causally linked to POAG risk.
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