# Association Between Skin Autofluorescence and Coronary Heart Disease in Chinese General Population: A Cross‐Sectional Study

## TL;DR

This study found that higher skin autofluorescence is linked to a greater risk of coronary heart disease in the Chinese general population.

## Contribution

The study demonstrates that skin autofluorescence could serve as a noninvasive biomarker for coronary heart disease risk in China.

## Key findings

- Higher lnSAF levels were independently associated with increased CHD risk after adjusting for confounders.
- The risk of CHD increased significantly in the highest quartile of lnSAF.
- The association remained significant in subgroups with overweight, low eGFR, and diabetes.

## Abstract

The aim of this study was to investigate the relationship between SAF and CHD in the general population of China and to assess the feasibility of SAF used as a predictor of CHD.

This study was nested within the prospective study REACTION (Cancer Risk Assessment in Chinese Diabetic Population) which included a total of 5806 eligible participants from two communities located in urban Beijing in 2018. SAF were measured using a fluorescence detector (DM Scan). CHD was the study endpoint and was determined by a face‐to‐face clinical survey. Pearson's correlation analysis, linear regression analysis, and binary logistic regression analysis were used to examine the association between SAF and CHD.

The overall prevalence of CHD in the general population was 12.1%. Logistic analysis showed that after full adjustment for confounding factors, the risk of CHD increased significantly with increasing lnSAF quartiles (p‐trend < 0.05). Compared to Q1 group, the multivariate adjusted ORs of Q2 and Q3 groups were 1.071 (0.817, 1.404), 1.025 (0.781, 1.344), respectively, and the OR was markedly increased at Q4 (OR = 1.377 [1.043, 1.817]). When lnSAF was a continuous variable, the risk of CHD increased with the elevation of lnSAF level. Stratified analysis showed that in subgroups with overweight (24–28 kg/m2), eGFR < 60 mL/min/1.73 m2, and diabetes mellitus (DM), lnSAF was still significantly correlated with CHD.

In Chinese general population, higher lnSAF is independently associated with increased risk of CHD, and noninvasive SAF holds the potential to be a biomarker for CHD risk evaluation and stratification.