Decreased Preoperative Estimated Glomerular Filtration Rate Was Related With Poor Prognosis of NSCLC Patients

(1) BACKGROUND: The coexistence of chronic kidney disease (CKD) and cancer is common due to the increased incidence of cancer in patients with CKD. Glomerular filtration rate is the optimal way to measure kidney function. To date, little is known about the role preoperative renal function plays in the prognosis of NSCLC patients. (2) METHODS: The study enrolled 140 patients who had been newly diagnosed NSCLC and received potential radical surgery for treatment from 2009 January to 2012 December. The detailed characteristics were collected including gender, age, smoking and drinking habits, KPS score, hemoglobin levels, tumor size, pathology type, differentiation, pTNM stage and serum creatinine before surgery. Univariate and multivariate analyses of overall survival (OS) and disease-free survival (DFS) were performed using Kaplan-Meier method and Cox model. (3) RESULTS: The univariate analysis identified that the pTNM stage (p < 0.001), eGFR level (p = 0.006), and adjuvant treatment (p = 0.007) were prognostic factors for OS, while drinking habit (p = 0.032), pTNM stage (p = 0.002) and eGFR level (p = 0.006) were the prognostic factors for DFS. Further multivariate analysis found that pTNM stage (HR = 2.091, 95% CI 1.424-3.071; p < 0.001) and eGFR level (HR = 1.890, 95% CI 1.424-3.071; p = 0.004) were independent factors associated with OS. The pTNM stage (HR = 1.735, CI 1.215-2.479; p = 0.002) and eGFR (HR = 1.793, CI 1.193-2.696; p = 0.005) were independent factors associated with DFS. Further subgroup analyses found that in female patients/ no smoking patients/ patients younger than 60 years, better eGFR level was significantly associated with better OS and DFS. (4) CONCLUSIONS: Decreased preoperative eGFR was associated with poor clinical outcome of NSCLC patients.