No significant differences were reported for this parameter between patients with CKD and the controls (p-value 0.079), between subjects with a Cr value below and above 1.2 mg/dL (p-value 0.077) and between subjects with an EGFR below and above 60 mL/min/1.73 m2 (p-value 0.098). This evidence concerns the gene EGFR and chronic kidney disease.