AI Article Synopsis

  • Family history of cardiovascular disease (CVD) and polygenic risk scores (PRS) for coronary artery disease (CAD) were studied for their effects on secondary cardiovascular events (sCVE) in patients undergoing carotid endarterectomy (CEA).
  • A study of 1,788 CEA patients found that a positive family history increases the 3-year risk of sCVE, and patients with high PRS also show a significantly greater risk and have more vulnerable plaque characteristics.
  • Both FHx and high MetaGRS are important risk factors for sCVE in CEA patients, suggesting the need for further research to explore their mechanisms and contributions to individual risk assessments.

Article Abstract

Background And Aims: Family history (FHx) of cardiovascular disease (CVD) is a risk factor for CVD and a proxy for cardiovascular heritability. Polygenic risk scores (PRS) summarizing >1 million variants for coronary artery disease (CAD) are associated with incident and recurrent CAD events. However, little is known about the influence of FHx or PRS on secondary cardiovascular events (sCVE) in patients undergoing carotid endarterectomy (CEA).

Methods: We included 1788 CEA patients from the Athero-Express Biobank. A weighted PRS for CAD including 1.7 million variants was calculated (MetaGRS). The composite endpoint of sCVE during three years of follow-up included coronary, cerebrovascular and peripheral events and cardiovascular death. We assessed the impact of FHx and MetaGRS on sCVE and carotid plaque composition.

Results: Positive FHx was associated with a higher 3-year risk of sCVE independent of cardiovascular risk factors and MetaGRS (adjusted HR 1.40, 95%CI 1.07-1.82, p = 0.013). Patients in the highest MetaGRS quintile had a higher 3-year risk of sCVE compared to the rest of the cohort independent of cardiovascular risk factors including FHx (adjusted HR 1.35, 95%CI 1.01-1.79, p = 0.043), and their atherosclerotic plaques contained more fat (adjusted OR 1.59, 95%CI, 1.11-2.29, p = 0.013) and more macrophages (OR 1.49, 95%CI 1.12-1.99, p = 0.006).

Conclusions: In CEA patients, both positive FHx and higher MetaGRS were independently associated with increased risk of sCVE. Moreover, higher MetaGRS was associated with vulnerable plaque characteristics. Future studies should unravel underlying mechanisms and focus on the added value of PRS and FHx in individual risk prediction for sCVE.

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http://dx.doi.org/10.1016/j.atherosclerosis.2020.04.013DOI Listing

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Article Synopsis
  • Family history of cardiovascular disease (CVD) and polygenic risk scores (PRS) for coronary artery disease (CAD) were studied for their effects on secondary cardiovascular events (sCVE) in patients undergoing carotid endarterectomy (CEA).
  • A study of 1,788 CEA patients found that a positive family history increases the 3-year risk of sCVE, and patients with high PRS also show a significantly greater risk and have more vulnerable plaque characteristics.
  • Both FHx and high MetaGRS are important risk factors for sCVE in CEA patients, suggesting the need for further research to explore their mechanisms and contributions to individual risk assessments.
View Article and Find Full Text PDF

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