Using genetic data to strengthen causal inference in observational research
Open accessAbstract
Causal inference is essential across the biomedical, behavioural and social sciences.By progressing from confounded statistical associations to evidence of causal relationships, causal inference can reveal complex pathways underlying traits and diseases and help to prioritize targets for intervention. Recent progress in genetic epidemiology - including statistical innovation, massive genotyped data sets and novel computational tools for deep data mining - has fostered the intense development of methods exploiting genetic data and relatedness to strengthen causal inference in observational research. In this Review, we describe how such genetically informed methods differ in their rationale, applicability and inherent limitations and outline how they should be integrated in the future to offer a rich causal inference toolbox.
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The family fixed-effects model can approximate the counterfactual situation because a non-exposed sibling or twin represents a natural match to their exposed co-sibling or twin.
“Pingault et al. (2018, p. 569) recently noted that the family fixed‐effects model can “approximate the counterfactual situation because a non‐exposed sibling or twin represents a natural match to their exposed co‐sibling or twin.””
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Genetically informative samples can strengthen causal inference in observational research.
“Genetically informative samples can strengthen causal inference in observational research (Pingault et al., 2018).”
From Stressful life events increase the risk of major depressive episodes: A population-based twin study (2023) · cites this paper as Pingault et al., 2018
Within-family genetic association estimates, such as those obtained from samples of siblings, can provide less biased estimates of direct genetic effects because they are unlikely to be affected by demographic and indirect genetic effects of parents.
“Within-family genetic association estimates, such as those obtained from samples of siblings, can provide less biased estimates of direct genetic effects because they are unlikely to be affected by demographic and indirect genetic effects of parents7,17,30–34.”
From Within-sibship genome-wide association analyses decrease bias in estimates of direct genetic effects (2022) · cites this paper as [32]
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- Authors
- Pingault, J.-B., O’Reilly, P. F., Schoeler, T., Ploubidis, G. B., Rijsdijk, F., & Dudbridge, F.
- Affiliations
- King's College London (GB)
- University College London (GB)
- University of Leicester (GB)
- Corresponding author
- Pingault, Jean-Baptiste
- ORCID
- Venue
- Nature Reviews Genetics
- Published
- 2018-06-05
- Volume
- 19
- Issue
- 9
- Pages
- 566-580
- ISSN
- 1471-0056 (ISSN-L)
- 1471-0064
- OpenAlex
- W2806899908
- Cited by
- 444
- References
- 25
- Citations by year
- 2026: 20 · 2025: 54 · 2024: 93 · 2023: 59 · 2022: 52 · 2021: 59 · 2020: 53 · 2019: 42 · 2018: 11
- FWCI
- 5.68
- Type
- journal article
- Language
- en
- Open access
- green
- figshare.com
- Licence
- Locations
- Nature Reviews Genetics (publishedVersion)
- PubMed (publishedVersion)
- UCL Discovery (University College London) (submittedVersion)
- Figshare (submittedVersion, cc-by)
- Research Portal (King's College London) (submittedVersion)
- Leicester Research Archive (University of Leicester) (submittedVersion, other-oa)
- Funders
- MQ: Transforming Mental Health (MQ16IP16)
- Medical Research Council (MR/N015746/1)
- Economic and Social Research Council (ES/M001660/1, ES/M008584/1)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genetic Associations and Epidemiology
- Physical Sciences › Mathematics › Statistics and Probability › Advanced Causal Inference Techniques
- Physical Sciences › Mathematics › Statistics and Probability › Statistical Methods in Epidemiology
- Keywords
- causal inference, genetic epidemiology, observational studies, confounding, Mendelian randomization, causal mechanisms, environmental exposure, risk factors, intervention targets
- MeSH terms
- Genotype, Humans, Databases, Genetic, Data Mining, Genotyping Techniques
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