In univariate analysis, older age, lower left ventricular ejection fraction, status of revascularization performed, higher contrast volume, lower hemoglobin, lower albumin, lower sodium, lower baseline eGFR, higher NLR and PLR, higher WBC, higher CRP, CAR and higher contrast/eGFR ratio were associated with CA-AKI. The gene discussed is CRP; the disease is acute kidney injury.