Univariate analysis revealed statistically significant clinical indicators, including maximum creatinine, maximum urea nitrogen, minimum hemoglobin, maximum C-reactive protein, total bilirubin, serum cystatin C, total protein, fibrinogen, urine volume within the 72 h preceding RRT weaning, RRT duration, positive FST results, aspirin history, malignant tumors, septic shock, high VIS, and history of invasive procedures. The gene discussed is CRP; the disease is cancer.