Identification of premature cardiovascular disease using a family-based strategy: a feasibility pilot study

Abstract Background Current guidelines fail to identify and effectively prevent cardiovascular disease (CVD) in young adults. Purpose To assess the feasibility of a systematic cardiovascular risk assessment in first-degree relatives of individuals with premature coronary artery disease (CAD). Method Index patients with obstructive CAD aged ≤ 45 years or ≤ 55 years without standard modifiable cardiovascular risk factor or ≤ 55 years with a 3-vessel coronary disease were prospectively identified among admissions. Pre-existing cases of CVD and prior cardiovascular check-ups were assessed among their first-degree relatives. Siblings and adult-children (≥25 years) without known CVD or active cardiology follow-up were eligible for a first cardiovascular evaluation. Index patients were encouraged to invite their eligible relatives to contact the Cardiology service for consultation. The primary endpoint was the relative’s eligibility for a cardiovascular prevention consultation. Result From September 2022 to June 2023, 137 patients with premature CAD, with 55.5% aged ≤ 45, were invited to initiate cardiovascular screening among their first-degree relatives. Of the 626 identified relatives, 153 (24.4%) had known atherosclerotic disease, primarily CAD (19.6%). Premature onset (before the age of 45) occurred in 5% of first-degree relatives. Among the 352 siblings and adult-children, 48 (13.6%) were already diagnosed with CVD, 68 (19.3%) were treated or followed for primary prevention, and 226 (64.2%) lacked active cardiovascular monitoring or treatment and were eligible for a first cardiovascular check-up (Figure 1). Within 10 months, 11.1% (25/226) of eligible relatives attended a first cardiovascular evaluation. Conclusion This family-based screening strategy for premature CVD demonstrated 1) a significant familial dimension, with 33% of siblings & adult-children already monitored for CVD prevention, and 2) an opportunity for cardiovascular prevention in two out of three young relatives.