Though plasma TNFα did not significantly differ between the preoperative and postoperative CAD cohort, postoperative TNFα levels were directly correlated to baseline serum troponin, creatinine, glucose levels, and BMI, which might be a predictor of severity and poor prognosis among postoperative CAD patients [75], who might be comorbid with chronic kidney failure, type 2 diabetes, and obesity. This evidence concerns the gene TNF and chronic renal failure syndrome.