Researchers Identified New Biomarkers for Heart Disease

A study found that elevated haptoglobin and IgA2 proteins are linked to higher cardiovascular event rates.

Updated on Sept. 23, 2026 in Heart Disease

Researchers Identified New Biomarkers for Heart Disease

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Scientists have identified haptoglobin and immunoglobulin A2 as independent predictors of cardiovascular events in asymptomatic adults. Patients with elevated levels of these two proteins showed twice the rate of adverse outcomes.

Why it matters

Identifying these biomarkers offers a potential way to assess residual immune-inflammatory risk in patients who do not yet show traditional signs of heart disease. This could lead to more accessible screening tools for subclinical atherosclerosis.

In a study of 5,328 U.S. adults with a mean age of 69, researchers found that those with haptoglobin levels of 1.3 g/L or higher and IgA2 levels of 380 mg/L or higher experienced double the rate of cardiovascular events.

The players

Journal of the American Heart Association

This is a peer-reviewed, open-access journal that publishes research related to cardiovascular and cerebrovascular disease.

The details

Researchers monitored participants for a median of 4.6 years, using ultrasound imaging and CT scans to track carotid plaque and coronary artery calcium. The study demonstrated that adding these specific protein levels to existing markers improved the Harrell C statistic from 0.621 to 0.638.

September 9, 2026: The study was published in the Journal of the American Heart Association.
4.6 years: This represents the median follow-up period for all study participants.

Health Landscape

This research updates the American Heart Association's cardiovascular risk assessment guidelines by incorporating immune-inflammatory data into standard diagnostic models. It marks a shift toward identifying subclinical atherosclerosis before acute symptoms appear in asymptomatic populations.

This discovery could eventually lead to more accurate blood tests that help physicians identify cardiovascular risk years before a cardiac event occurs. Patients should consult with their doctors to determine if these emerging biomarkers are appropriate for their personal health profile.

The takeaway

Early identification of inflammatory markers may provide a critical window for intervention in otherwise healthy-seeming adults. Maintaining regular heart health screenings remains the most effective way to manage cardiovascular risks today.