Novel risk factors for coronary heart disease: emerging connections

Area of Science:

• Cardiovascular Medicine
• Atherosclerosis Research
• Clinical Risk Assessment

Background:

• Established risk factors (hypertension, smoking, high cholesterol) account for only 50% of coronary heart disease (CHD) cases.
• This gap necessitates investigation into novel markers potentially linked to atherothrombosis.
• Emerging risk factors require evaluation for their role in CHD pathogenesis.

Purpose of the Study:

• To review emerging risk factors for coronary heart disease (CHD).
• To assess the epidemiologic evidence, pathogenic mechanisms, and clinical utility of screening for these factors.
• To determine if modifying these emerging risk factors offers clinical benefit.

Main Methods:

• Literature review of epidemiologic studies on emerging CHD risk factors.
• Analysis of pathological mechanisms linking factors to atherothrombosis.
• Evaluation of clinical utility and evidence for net benefit from selective risk factor modification.

Main Results:

• Several emerging risk factors are identified, including lipoprotein(a), small dense LDL particle size, and hyperhomocysteinemia.
• Inflammatory, infectious, and hemostatic factors are also considered.
• Evidence regarding the clinical utility and net benefit of modifying these factors is examined.

Conclusions:

• Established risk factors are insufficient for explaining all CHD cases.
• Emerging factors like lipoprotein(a) and hyperhomocysteinemia warrant further investigation.
• Clinical guidelines need to consider the role and modifiability of these novel CHD risk factors.