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No genetic causal relationship between lung function and osteoporosis - evidence from a mendelian randomization study
Rui Jiang1,2, Zhongshan Li1,2, Caiguo Zhang1,2
1Graduate school, Hubei University of Traditional Chinese Medicine, 16 Huangjiahu West Road, Wuhan, 430065, China.
Scientific Reports
|October 17, 2024
Summary
This study found no causal link between reduced lung function and osteoporosis risk. Mendelian randomization analysis confirmed that lung capacity does not genetically influence osteoporosis development.
Area of Science:
- Pulmonary Medicine
- Bone Metabolism
- Genetic Epidemiology
Background:
- Observational studies suggest a link between declining lung function and osteoporosis (OP) risk.
- However, previous findings are inconsistent, necessitating further investigation into causality.
Purpose of the Study:
- To investigate the potential causal relationship between lung function parameters (FVC, FEV1, FEV1/FVC, PEF) and osteoporosis using Mendelian randomization (MR).
Main Methods:
- Employed a two-sample MR design using summary statistics from large genome-wide association studies.
- Utilized inverse variance weighted (IVW), MR-Egger, and weighted median methods for causal inference.
- Assessed heterogeneity and pleiotropy using Cochran's Q test, MR-Egger regression, and MR-PRESSO, with outlier removal.
Main Results:
- MR analysis indicated no significant causal effect of lung function (FVC, FEV1, FEV1/FVC, PEF) on osteoporosis.
- Sensitivity analyses and outlier removal confirmed the robustness of these findings.
- No evidence of directional or horizontal pleiotropy influencing the results.
Conclusions:
- There is no genetically determined causal relationship between lung function and osteoporosis.
- Observed associations in prior studies may be due to shared environmental or lifestyle risk factors.
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