Evaluating the Prognostic Role of Glucose-to Ratio in Patients With Metastatic Renal Cell Carcinoma Treated with Tyrosine Kinase Inhibitors in First Line: A Study by the Turkish Oncology Group Kidney Cancer Consortium (TKCC)

Abstract

Purpose Identifying prognostic indicators for risk stratification in metastatic renal cell carcinoma (mRCC) is crucial for optimizing treatment strategies and follow-up plans. This study aims to investigate the prognostic role of the glucose-to-lymphocyte ratio (GLR) in patients with mRCC receiving tyrosine kinase inhibitors (TKIs) as first-line therapy. Methods A retrospective cohort study was conducted using data from the Turkish Oncology Group Kidney Cancer Consortium Database. GLR was calculated by dividing the fasting glucose (mmol/L) by the lymphocyte count (x109/L). We categorized patients into two categories based on their median GLR level. Results The analysis included a total of 598 patients. We found that progression-free survival (PFS) was significantly longer in the GLR-low group, with a median PFS of 15.05 months (95% CI 12.7-17.4) compared to 7.79 months (95% CI 6.6-9.0) in the GLR-high group (p < 0.001). Multivariate analysis identified GLR as an independent risk factor for poor PFS (HR 1.39, 95% CI 1.12-1.72; p = 0.003). Overall survival (OS) was also significantly longer in the GLR-low group, with a median OS of 38.47 months (95% CI, 30.9-46.0) compared to 24.15 months (95% CI 18.0-30.2) in the GLR-high group (p = 0.001). GLR was an independent predictor for OS in multivariate analysis (HR 1.45, 95% CI 1.12-1.86; p = 0.004). Conclusion The GLR can be a valuable prognostic marker for glucose metabolism and systemic inflammatory status in this patient population. Our research highlights the potential prognostic value of GLR in patients with mRCC receiving TKIs, indicating its potential as a useful tool for clinical decision-making.