Significant differences were noted between frail and non-frail groups in age (p = 0.036), CKD stages (p < 0.001), nutritional status (p < 0.001), Charlson comorbidity index (p < 0.001), BMI (p < 0.001), GFR (p < 0.001), CRP (p = 0.006), and serum albumin (p = 0.002). The gene discussed is CRP; the disease is chronic kidney disease.