Work

Efficacy and Treatment Outcomes of First-line Pazopanib Therapy in Advanced Renal Cell Carcinoma in Greece

Year: 2025

Type: article

Abstract: Background/Aim: Pazopanib is a tyrosine kinase inhibitor (TKI) approved as first-line treatment for renal cell carcinoma (RCC). Although pazopanib efficacy and safety have been established in phase III studies, real-world data are limited. The aim of this study was to evaluate pazopanib efficacy, duration of responses and safety, as first-line treatment in patients with advanced/metastatic RCC with favorable-intermediate prognosis. Patients and Methods: This single-arm prospective Greek observational study evaluated 59 patients treated with first-line pazopanib as indicated, and who were followed-up every 3 months for 2 years, or until disease progression. The primary objective was to evaluate the efficacy of first-line pazopanib treatment in patients with favorable-intermediate prognosis metastatic RCC at 9 months from treatment onset. Results: The primary composite efficacy point (complete response, partial response, or stable disease at 9 months) was reached by 30.5% [95% confidence interval (CI)=19.2-43.9%] of patients, with 27.1% (95% CI=16.4-40.3%) of patients demonstrating stable disease. Best overall response was complete response in 5.1% (3/59 patients), partial response in 22% (13/59 patients), and stable disease in 35.6% (21/59 patients). Median progression-free survival was 17.7 (95% CI=9.15-26.25) months and declined with the International Metastatic Renal Cell Carcinoma Database Consortium progressive risk (24.5 and 6.97 months for favorable- and intermediate-risk, respectively; p=0.012). The cumulative overall survival rate was 95% after 9 (95% CI=89.8-100.0%) months and 24 (95% CI=89.8-100.0%) months. Median overall survival was not reached. Overall, 234 adverse events were reported in 55 patients, of which the most common were malignant neoplasm progression, diarrhea, and hypertension. Conclusion: These data demonstrate that pazopanib is well-tolerated and effective as first-line treatment in patients with favorable-intermediate risk metastatic RCC in real-life conditions in Greece.

Source: Anticancer Research

DOI: 10.21873/anticanres.17624