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Updated: Oct 24, 2025

Identifying Coronary Artery Calcification on Non-gated Computed Tomography Scans
Published on: August 28, 2018
Association of cystatin C with coronary artery calcification in patients undergoing multidetector computed tomography
Insights
Elevated cystatin C levels are linked to coronary artery calcification (CAC) occurrence and severity. This study suggests cystatin C may serve as a valuable predictor for CAC in patients undergoing coronary computed tomography angiography.
Area of Science:
- Cardiology
- Biomarkers
- Atherosclerosis Research
Background:
- Cystatin C is recognized for its association with atherosclerosis.
- The precise relationship between cystatin C and coronary artery calcification (CAC) remains unclear.
- Evaluating cystatin C's predictive capability for CAC is crucial for cardiovascular risk assessment.
Purpose of the Study:
- To investigate the predictive value of cystatin C in the occurrence of coronary artery calcification (CAC).
- To assess the association between cystatin C levels and the severity of CAC.
- To determine if cystatin C can serve as an independent predictor for severe CAC.
Main Methods:
- A cohort of 1447 hospitalized patients undergoing coronary computed tomography angiography was analyzed.
- Patients were stratified based on CAC score (CACS) into calcification and control groups, with further division into low, medium, and high calcification subgroups.
- Statistical analyses, including ROC curve analysis and multivariate logistic regression, were employed to evaluate cystatin C's predictive value.
Main Results:
- Patients with CAC exhibited significantly higher cystatin C levels compared to the control group.
- A positive correlation was observed between increasing CACS and elevated cystatin C levels.
- ROC analysis indicated cystatin C's predictive value for both the occurrence (AUC 0.640) and severity (AUC 0.638) of CAC.
- Multivariate analysis identified cystatin C as an independent predictor of severe CAC (AOR 3.748).
Conclusions:
- Cystatin C levels are significantly associated with both the presence and severity of coronary artery calcification.
- Cystatin C demonstrates potential as a reliable biomarker for predicting CAC.
- Further research is warranted to explore the clinical utility of cystatin C in CAC risk stratification.
Abstract:
Cystatin C is associated with atherosclerosis, but the relationship between cystatin C and coronary artery calcification (CAC) is uncertain. The purpose of this study was to evaluate the predictive value of cystatin C on the occurrence and severity of CAC.A total of 1447 hospitalized patients with coronary computed tomography angiography were selected in this study. According to the CAC score (CACS), patients were divided into calcification group (with CAC, n = 749) and control group (without CAC, n = 698). The calcification group was further divided into low calcification group (CACS < 100, n = 407), medium calcification group (CACS 100-400, n = 203), and high calcification group (CACS≥400, n = 139).Patients with CAC had higher cystatin C level than those in control group (P < .05). With the increase of calcification score, the cystatin C level showed an upward trend. The cystatin C level in the high calcification group was significantly higher than those in the low and medium calcification group (P < .05). ROC curve analysis showed that cystatin C had a high predictive value for the occurrence of CAC [area under the curve 0.640, 95% confidence interval (95% CI) 0.591-0.690, cut-off value 0.945 mg/L, sensitivity 0.683, specificity 0.558, P < .05] and severe CAC (area under the curve 0.638, 95% CI 0.550-0.762, cut-off value 0.965 mg/L, sensitivity 0.865, specificity 0.398, P < .05). Multivariate logistic regression analysis showed that cystatin C was an independent predictor of severe CAC (AOR 3.748, 95% CI 1.138-10.044, P < .05).Cystatin C was significantly associated with the occurrence and severity of CAC, suggesting that cystatin C had the potential as a predictor of CAC.
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