Our RECOMB paper is now out. When epistasis is involved, GWAS can produce spurious associations due to correlation with the interaction terms. We show that this can happen even when interaction effects are small and it gets worse with larger sample sizes.
journals.sagepub.com/doi/10.1177/...
journals.sagepub.com
Bias in Genome-Wide Association Test Statistics Due to Omitted Interactions - Burak Yelmen, Merve Nur Güler, Tõnu Kollo, Märt Möls, Guillaume Charpiat, Flora Jay, , Estonian Biobank Research Team, Est...
Over the past two decades, genome-wide association studies (GWAS) enabled the discovery of thousands of variants associated with many complex human traits. Howe...