The mtDNA copy number was not significantly associated with all-cause mortality (lower two groups vs highest: hazard ratio [HR] = 1.21, confidence interval [CI] = 0.477–3.061, P = 0.69) after adjustment for age, sex, PD duration, previous history of coronary artery disease, serum albumin, hs-CRP, and MIS. This evidence concerns the gene CRP and coronary artery disorder.