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Adjuvant therapy in renal cell carcinoma: does higher risk for recurrence improve the chance for success?
R A Figlin1, B C Leibovich2, G D Stewart3
1Cedars-Sinai Medical Center, Samuel Oschin Comprehensive Cancer Institute, Los Angeles, USA.
Abstract:
The success of targeted therapies, including inhibitors of the vascular endothelial growth factor pathway or the mammalian target of rapamycin, in the treatment of metastatic renal cell carcinoma led to interest in testing their efficacy in the adjuvant setting. Results from the first trials are now available, with other studies due to report imminently. This review provides an overview of adjuvant targeted therapy in renal cell carcinoma, including interpretation of currently available conflicting data and future direction of research. We discuss the key differences between the completed targeted therapy adjuvant trials, and highlight the importance of accurately identifying patients who are likely to benefit from adjuvant treatment. We also consider reasons why blinded independent radiology review and treatment dose may prove critical for adjuvant treatment success. The implications of using disease-free survival as a surrogate end point for overall survival from the patient perspective and measurement of health benefit have recently been brought into focus and are discussed. Finally, we discuss how the ongoing adjuvant trials with targeted therapies and checkpoint inhibitors may improve our understanding and ability to prevent tumor recurrence after nephrectomy in the future.
Insights
Adjuvant targeted therapies show promise for renal cell carcinoma patients post-surgery. Ongoing research aims to clarify conflicting data and optimize treatment for preventing tumor recurrence.
Area of Science:
- Oncology
- Nephrology
- Pharmacology
Background:
- Metastatic renal cell carcinoma (RCC) treatment success with targeted therapies (VEGF/mTOR inhibitors) prompted adjuvant setting investigation.
- Early adjuvant targeted therapy trial results for RCC are emerging, with more expected soon.
Purpose of the Study:
- To review adjuvant targeted therapy in RCC, interpreting current conflicting data.
- To discuss future research directions, trial differences, and patient selection for adjuvant treatment.
- To explore the role of radiology review and dose in treatment success and surrogate endpoints.
Main Methods:
- Review of completed and ongoing adjuvant targeted therapy trials in renal cell carcinoma.
- Analysis of factors influencing treatment success, including patient identification, radiology review, and dosage.
- Discussion of disease-free survival as a surrogate endpoint and health benefit measurement.
Main Results:
- Currently available data on adjuvant targeted therapy for RCC is conflicting.
- Key differences exist between completed adjuvant targeted therapy trials.
- Patient selection, blinded radiology review, and treatment dose are critical factors.
Conclusions:
- Adjuvant targeted therapies require careful interpretation of existing data and further research.
- Ongoing trials with targeted therapies and checkpoint inhibitors may enhance understanding of preventing RCC recurrence post-nephrectomy.
- Optimizing patient selection and trial methodologies is crucial for future adjuvant treatment success.
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