The CAD group had a significantly higher proportion of Tregs expressing the chemokine receptors CCR2 [17.9% ± 5.3% vs 14.7% ± 5.9%, P = 0.006], CCR4 [73.7% ± 9.2% vs 64.1% ± 14.1%, P < 0.001] and CCR6 [13.1% ± 6.8% vs 10.1% ± 5.7%, P = 0.022]. Here, CCR4 is linked to coronary artery disorder.