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Identification of the high-risk groups in familial coronary heart disease
Insights
Family history significantly increases the risk of early coronary heart disease (CHD). Siblings of young CHD patients face a 3x higher risk, especially if parents died young from CHD.
Area of Science:
- Cardiology
- Genetics
- Public Health
Background:
- Coronary heart disease (CHD) poses a significant health burden.
- Identifying individuals at high risk for premature CHD is crucial for prevention.
- Family history is a known risk factor for various diseases, including CHD.
Purpose of the Study:
- To investigate the occurrence of CHD among siblings of patients with early-onset and middle-aged onset CHD.
- To determine the influence of parental CHD history on the risk of CHD in offspring.
- To assess the utility of family history in identifying individuals at high risk for premature CHD.
Main Methods:
- Case-control study comparing CHD occurrence in siblings of CHD patients versus control subjects.
- Stratification of CHD patients into young (<46 years) and middle-aged (46-55 years) groups.
- Analysis of family history of CHD, specifically parental mortality from CHD before age 70.
Main Results:
- Siblings of young CHD patients had approximately 3 times the risk of early-onset CHD compared to siblings of middle-aged patients.
- The highest risk (up to 10-fold) was observed in siblings of young CHD patients whose parents died from CHD before age 70.
- An increased risk of early-onset CHD was noted in siblings of middle-aged patients only if a parent had died from CHD before age 70.
Conclusions:
- Family history of coronary heart disease is a strong predictor of premature CHD risk.
- Early-onset CHD in a patient significantly elevates the risk for their siblings.
- Parental history of premature CHD further amplifies the risk, highlighting the importance of genetic predisposition.
Abstract:
Occurrence of coronary heart disease (CHD) was assessed among the sibs of 309 men with fatal or non-fatal CHD, including 126 men who developed the disease before age 46 (young patients), and 183 men who developed it at age 46-55 (middle-aged patients), and among the sibs of 212 reference men. The risk of early onset CHD was about 3 times as great for the sibs of the young as for those of the middle-aged patients. The risk was greatest of all, or up to 10-fold over the expected value, for the sibs of those young patients whose father or mother had died of CHD before age 70, but the risk was distinctly increased also for the sibs of the other young patients. By contrast, the sibs of the middle-aged patients carried an appreciably increased risk of early onset CHD only when one of the parents had died from CHD before age 70. Information about the family pattern of CHD is helpful in identifying the individuals at high risk for premature CHD.