There were no significant differences in sex (P = 0.860), age (P = 0.952), marital status (P = 0.728), employment status (P = 0.275), dry weight (P = 0.698), height (P = 0.372), BMI (P = 0.915), malnutrition (P = 0.667), waist circumference (P = 0.242), hip circumference (P = 0.376), waist to hip ratio (P = 0.379), arm circumference (P = 0.516), dialysis vintage (P = 0.910), dialysis frequency (P = 0.114), dialysis duration/session (P = 0.193), Kt/V (P = 0.568), URR (P = 0.378), cause of renal failure (P = 0.398) between low levels (< 3.75 ng/mL), and high levels (≥ 3.75 ng/mL) of PTX3. The gene discussed is PTX3; the disease is acute kidney injury.