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Updated: May 4, 2026

A Syngeneic Mouse Model of Metastatic Renal Cell Carcinoma for Quantitative and Longitudinal Assessment of Preclinical Therapies
Published on: April 12, 2017
Using cumulative toxicity to identify the optimal second-line targeted therapy in patients with metastatic renal cell
Giuseppe Di Lorenzo1, Sabino De Placido
1Genitourinary Cancer Section, Federico II University, Naples, Italy.
Abstract:
The life expectancy in metastatic renal cell carcinoma patients treated with targeted therapies can be influenced by the time spent on treatment, and the current focus of clinical research in this field appears to be on extending the time on treatment while limiting toxicities. It has been proposed that a strategy based on the sequential administration of two tyrosine kinase inhibitors could result in unacceptable cumulative toxicity for many metastatic renal cell carcinoma patients, while switching to a mTOR inhibitor does not. However, a definite consensus on this issue has not been reached. As very little information from head-to-head studies is available, clinicians have to base their treatment decisions on existing evidence, with an obvious preference for high-quality studies. Some recent studies have provided new insights into the issue of cumulative toxicity of second-line targeted therapies in metastatic renal cell carcinoma patients. In this article, we discuss the evidence emerging from the randomized AXIS and RECORD-3 trials.
Insights
Extending treatment time for metastatic renal cell carcinoma (mRCC) patients is key. Sequential tyrosine kinase inhibitors may cause toxicity, unlike mTOR inhibitors, but consensus is lacking.
Area of Science:
- Oncology
- Pharmacology
- Clinical Trials
Background:
- Metastatic renal cell carcinoma (mRCC) treatment focuses on extending patient survival via targeted therapies.
- Optimizing treatment duration while minimizing cumulative toxicity is a critical clinical challenge in mRCC management.
Purpose of the Study:
- To evaluate the cumulative toxicity of sequential targeted therapies in metastatic renal cell carcinoma patients.
- To compare the safety profiles of different second-line treatment strategies in mRCC.
Main Methods:
- Discussion of evidence from the randomized AXIS and RECORD-3 trials.
- Analysis of head-to-head study data regarding sequential tyrosine kinase inhibitors versus other targeted agents.
Main Results:
- Emerging evidence suggests potential differences in cumulative toxicity between sequential tyrosine kinase inhibitors and mTOR inhibitors in mRCC.
- Limited head-to-head data necessitates careful interpretation of existing clinical trial results.
Conclusions:
- The optimal sequencing of targeted therapies in mRCC remains an area of active investigation.
- Further high-quality studies are needed to establish a definitive consensus on managing cumulative toxicity in second-line mRCC treatment.
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