Association of lipoprotein(a) with progression of coronary artery calcification: retrospective longitudinal study

Area of Science:

• Cardiology
• Biomarkers
• Public Health

Background:

• Atherosclerotic cardiovascular disease (ASCVD) poses a significant health risk.
• Lipoprotein(a) (Lp(a)) is an established independent risk factor for ASCVD.
• Limited data exists on Lp(a) and ASCVD risk in Asian populations, necessitating further investigation.

Purpose of the Study:

• To evaluate the predictive capability of coronary artery calcification (CAC) changes for ASCVD risk in relation to lipoprotein(a) (Lp(a)) levels.
• To assess the association between Lp(a) levels and CAC progression in a general population.
• To explore the utility of Lp(a) as a biomarker for subclinical atherosclerosis.

Main Methods:

• A cohort of 2,750 participants was analyzed, stratified by Lp(a) levels.
• Coronary artery calcification (CAC) progression was defined by incident CAC or significant change in CAC scores (Δ√transformed CACS).
• Statistical analyses adjusted for follow-up duration and other potential confounders.

Main Results:

• A significant correlation was observed between higher Lp(a) levels and increased baseline/follow-up CAC scores and CAC progression.
• Participants with CAC progression exhibited notably higher Lp(a) levels.
• Annualized CAC progression analysis did not yield statistically significant results, suggesting a need for longer follow-up.

Conclusions:

• Elevated Lp(a) levels are associated with CAC progression in a general population without established ASCVD.
• Longer-term studies are required to establish the predictive value of CAC progression for ASCVD events.
• Further research is essential to define clinically relevant Lp(a) thresholds for cardiovascular risk assessment in specific populations, such as the Korean population.