Communicating polygenic and non-genetic risk for atherosclerotic cardiovascular disease - An observational follow-up study

Author:

Widén Elisabeth,Junna Nella,Ruotsalainen Sanni,Surakka Ida,Mars Nina,Ripatti Pietari,Partanen Juulia J,Aro Johanna,Mustonen Pekka,Tuomi Tiinamaija,Palotie Aarno,Salomaa Veikko,Kaprio Jaakko,Partanen Jukka,Hotakainen Kristina,Pöllänen Pasi,Ripatti Samuli

Abstract

AbstractBackgroundAlgorithms including both traditional risk factors and polygenic risk scores (PRS) can significantly improve prediction of atherosclerotic cardiovascular disease (ASCVD). However, the clinical benefit of adding PRS to clinical risk evaluation remains unclear.ObjectivesThe study evaluated the attitudes of 7,342 individuals (64% women, mean age 56 yrs) upon receiving personal genome-enhanced ASCVD risk information, and prospectively assessed the impact on the participants’ health behavior.MethodsThe participant’s 10-year risk for ASCVD was estimated using both a traditional clinical risk score and a PRS-enhanced score, and both scores were communicated directly to study participants with an interactive web-tool.ResultsWhen reassessed after 1.5 years by a clinical visit and questionnaires, 20.8% of individuals at high (>10%) ASCVD risk had seen a doctor, 12.4% reported weight loss, 14.2% of smokers had quit smoking, and 15.4% had signed up for health coaching online. Altogether, 42.6% of individuals at high risk had made some health behavioral change compared to 33.5% of persons at low/average risk such that a higher baseline risk predicted a favorable change (p<0.001), with both clinical (p<0.001) and genomic factors (p=0.003) contributing independently. Seeing a doctor and weight loss both resulted in clinically significant improvement of lipid profiles (lower LDL-cholesterol and triglycerides) and lower systolic blood pressure (p<0.01).ConclusionsWeb-based communication of personal ASCVD risk-data including polygenic risk to middle-aged persons can motivate positive changes in health behavior. It supports integration of genomic information into clinical risk calculators as a feasible approach to enhance disease prevention.Condensed AbstractPrediction tools that combine polygenic risk scores (PRS) with clinical factors provide a new opportunity for improved risk assessment and prevention of atherosclerotic cardiovascular disease (ASCVD), but the clinical impact of PRS has hitherto remained unclear. We evaluated the longitudinal effects of using a web-based tool to communicate genome-based ASCVD risk-information to 7,342 middle-aged individuals. 42% of persons at high risk improved their health behavior during follow-up which resulted in clinically significant improvement of lipid profiles and lower systolic blood pressure. This supports integration of PRS into clinical risk calculators as a feasible approach to enhance disease prevention.

Publisher

Cold Spring Harbor Laboratory

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