With Rentrop classification group as the dependent variable and factors with statistical significance (P < 0.05) in univariate comparisons as the independent variables, MPVLR (OR = 2.101, P < 0.01), diabetes (OR = 2.355, P < 0.01), C-reactive protein level (OR = 1.036, P < 0.05), and right coronary artery occlusion (OR = 0.313, P < 0.01) were independently related to CCC formation (Table 4). The gene discussed is CRP; the disease is diabetes mellitus.