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• W3097367572 abstract "Abstract Polygenic risk scores (PRSs) have been offered since 2019 to screen in vitro fertilization embryos for genetic liability to adult diseases, despite a lack of comprehensive modeling of expected outcomes. Here we predict, based on the liability threshold model, the expected reduction in complex disease risk following polygenic embryo screening for a single disease. Our main finding is that a strong determinant of the potential utility of such screening is the selection strategy , a factor that has not been previously studied. Specifically, when only embryos with a very high PRS are excluded, the achieved risk reduction is minimal. In contrast, selecting the embryo with the lowest PRS can lead to substantial relative risk reductions, given a sufficient number of viable embryos. For example, a relative risk reduction of ≈50% for schizophrenia can be achieved by selecting the embryo with the lowest PRS out of five viable embryos. We systematically examine the impact of several factors on the utility of screening, including the variance explained by the PRS, the number of embryos, the disease prevalence, the parental PRSs, and the parental disease status. When quantifying the utility, we consider both relative and absolute risk reductions, as well as population-averaged and per-couple risk reductions. We also examine the risk of pleiotropic effects. Finally, we confirm our theoretical predictions by simulating “virtual” couples and offspring based on real genomes from schizophrenia and Crohn’s disease case-control studies. We discuss the assumptions and limitations of our model, as well as the potential emerging ethical concerns." @default.
• W3097367572 created "2020-11-09" @default.
• W3097367572 creator A5006140022 @default.
• W3097367572 creator A5021375048 @default.
• W3097367572 creator A5028616817 @default.
• W3097367572 creator A5049650069 @default.
• W3097367572 creator A5053795232 @default.
• W3097367572 creator A5060245164 @default.
• W3097367572 date "2020-11-06" @default.
• W3097367572 modified "2023-10-15" @default.
• W3097367572 title "Utility of polygenic embryo screening for disease depends on the selection strategy" @default.
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