Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issues

Abstract Clinical use of polygenic risk scores (PRS) will look very different to the more familiar monogenic testing. Here we argue that despite these differences, most of the ethical, legal, and social issues (ELSI) raised in the monogenic setting, such as the relevance of results to family members...

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Main Authors: Anna C. F. Lewis, Robert C. Green
Format: Article
Language:English
Published: BMC 2021-01-01
Series:Genome Medicine
Online Access:https://doi.org/10.1186/s13073-021-00829-7
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author Anna C. F. Lewis
Robert C. Green
author_facet Anna C. F. Lewis
Robert C. Green
author_sort Anna C. F. Lewis
collection DOAJ
description Abstract Clinical use of polygenic risk scores (PRS) will look very different to the more familiar monogenic testing. Here we argue that despite these differences, most of the ethical, legal, and social issues (ELSI) raised in the monogenic setting, such as the relevance of results to family members, the approach to secondary and incidental findings, and the role of expert mediators, continue to be relevant in the polygenic context, albeit in modified form. In addition, PRS will reanimate other old debates. Their use has been proposed both in the practice of clinical medicine and of public health, two contexts with differing norms. In each of these domains, it is unclear what endpoints clinical use of PRS should aim to maximize and under what constraints. Reducing health disparities is a key value for public health, but clinical use of PRS could exacerbate race-based health disparities owing to differences in predictive power across ancestry groups. Finally, PRS will force a reckoning with pre-existing questions concerning biomarkers, namely the relevance of self-reported race, ethnicity and ancestry, and the relationship of risk factors to disease diagnoses. In this Opinion, we argue that despite the parallels to the monogenic setting, new work is urgently needed to gather data, consider normative implications, and develop best practices around this emerging branch of genomics.
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spelling doaj.art-76b7a8073ad044d6837dc93ad3fb60c92022-12-21T20:18:23ZengBMCGenome Medicine1756-994X2021-01-0113111010.1186/s13073-021-00829-7Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issuesAnna C. F. Lewis0Robert C. Green1E J Safra Center for Ethics, Harvard UniversityBrigham and Women’s HospitalAbstract Clinical use of polygenic risk scores (PRS) will look very different to the more familiar monogenic testing. Here we argue that despite these differences, most of the ethical, legal, and social issues (ELSI) raised in the monogenic setting, such as the relevance of results to family members, the approach to secondary and incidental findings, and the role of expert mediators, continue to be relevant in the polygenic context, albeit in modified form. In addition, PRS will reanimate other old debates. Their use has been proposed both in the practice of clinical medicine and of public health, two contexts with differing norms. In each of these domains, it is unclear what endpoints clinical use of PRS should aim to maximize and under what constraints. Reducing health disparities is a key value for public health, but clinical use of PRS could exacerbate race-based health disparities owing to differences in predictive power across ancestry groups. Finally, PRS will force a reckoning with pre-existing questions concerning biomarkers, namely the relevance of self-reported race, ethnicity and ancestry, and the relationship of risk factors to disease diagnoses. In this Opinion, we argue that despite the parallels to the monogenic setting, new work is urgently needed to gather data, consider normative implications, and develop best practices around this emerging branch of genomics.https://doi.org/10.1186/s13073-021-00829-7
spellingShingle Anna C. F. Lewis
Robert C. Green
Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issues
Genome Medicine
title Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issues
title_full Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issues
title_fullStr Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issues
title_full_unstemmed Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issues
title_short Polygenic risk scores in the clinic: new perspectives needed on familiar ethical issues
title_sort polygenic risk scores in the clinic new perspectives needed on familiar ethical issues
url https://doi.org/10.1186/s13073-021-00829-7
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