In further subgroup analysis of individuals with diabetes without established CHD, performing CTCA (n = 87), the levels of I-FABP in those with significant stenosis were higher compared to those with normal coronary arteries, median 1.96 ng/ml (IQR 0.98–2.31) versus 1.02 ng/ml (IQR 0.58–1.46), p = 0.023. This evidence concerns the gene FABP2 and coronary artery disorder.