CRP and kidney cancer: This heightened prevalence can be attributed to the risk factors of patients with advanced kidney cancer, such as age (≥65 years old), body mass index (BMI < 18.5 kg/m2), albumin (<40 g/L), hemoglobin (<110 g/L), C-reactive protein (CRP < 3 mg/L), the presence of diabetes, and the presence of anorexia [17].