The univariable model showed that CDC42 at D3 (high vs. low) (HR: 0.346, P = 0.047) was associated with a lower MACE rate, and CDC42 at D7 (high vs. low) (HR: 0.375, P = 0.050) tended to be associated with a lower MACE rate in DCB-treated SV-CAD patients. Here, CDC42 is linked to coronary artery disorder.