Use of Mendelian randomisation to assess potential benefit of clinical intervention.
Open accessAbstract
Mendelian randomisation is a technique for assessing causal associations in observational data. Genetic variants associated with the risk factor of interest are regarded in a similar way to random assignment in a clinical trial. The difference in the risk factor due to the genetic variation, however, is materially distinct from the change due to any proposed therapeutic intervention and so might affect the outcome differently. Consequently, it can be misleading to generalise the magnitude of a Mendelian randomisation estimate to the effect of a potential intervention on the risk factor in practice. Awareness of the limitations of such estimates is important for the use of Mendelian randomisation in target based drug development
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If genetic variants that are associated with serum uric acid are not also associated with risk of gout, then we may question whether the genetic variants are truly able to assess the effects of varying serum uric acid.
“Provided that there is sufficient statistical power, then if genetic variants that are associated with serum uric acid are not also associated with risk of gout, then we may question whether the genetic variants are truly able to assess the effects of varying serum uric acid 104 .”
From Guidelines for performing Mendelian randomization investigations (2020) · cites this paper as [104]
Changes in the effects of the exposure and mediator over time and feedback between the exposure and mediator cannot be addressed by a conventional Mendelian randomization analysis.
“As such, changes in the effects of the exposure and mediator over time and feedback between the exposure and mediator cannot be addressed by a conventional Mendelian randomization analysis.”
From Network Mendelian randomization: using genetic variants as instrumental variables to investigate mediation in causal pathways. (2015) · cites this paper as [32]
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- Authors
- Burgess, S., Butterworth, A., Malarstig, A., & Thompson, S. G.
- Affiliations
- University of Cambridge (GB)
- Corresponding author
- Burgess, S.
- Venue
- BMJ
- Publisher
- BMJ
- Published
- 2012-11-06
- Volume
- 345
- Issue
- nov06 1
- Pages
- e7325-e7325
- ISSN
- 1756-1833 (ISSN-L)
- OpenAlex
- W2020104306
- Cited by
- 292
- References
- 20
- Citations by year
- 2026: 13 · 2025: 36 · 2024: 44 · 2023: 35 · 2022: 23 · 2021: 27 · 2020: 18 · 2019: 14 · 2018: 15 · 2017: 9 · 2016: 13 · 2015: 19 · 2014: 17 · 2013: 9
- FWCI
- 8.67
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- BMJ (publishedVersion)
- PubMed (publishedVersion)
- HighWire Press Open Archive (submittedVersion)
- Funders
- British Heart Foundation (RG/08/014)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
- Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
- Social Sciences › Decision Sciences › Statistics, Probability and Uncertainty › Meta-analysis and systematic reviews
- Keywords
- Mendelian randomization, causal inference, genetic variants, risk factors, therapeutic interventions
- MeSH terms
- Data Interpretation, Statistical, Epidemiologic Methods, Humans, Nervous System Diseases, Bias, Confounding Factors, Epidemiologic, Randomized Controlled Trials as Topic, Mendelian Randomization Analysis
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