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Updated: Jul 11, 2026

Quantifying Antibody-Dependent Cellular Cytotoxicity in a Tumor Spheroid Model: Application for Drug Discovery
Published on: April 26, 2024
Sunitinib
1Cleveland Clinic Taussig Cancer Center, Department of Solid Tumor Oncology and Urology, 9500 Euclid Avenue/Desk R35, Cleveland, Ohio 44195, USA. rinib2@ccf.org
Abstract:
Sunitinib is a small-molecule inhibitor of several receptor tyrosine kinases relevant to tumor angiogenesis, including the vascular endothelial growth factor (VEGF) receptor. Potent inhibition of this related family of receptors and consequent antiangiogenic effects have been demonstrated in vitro and in murine models. Human studies have established 50 mg daily dosing given on an intermittent schedule as a tolerable dose. Significant antitumor effects have been observed, most notably in advanced renal cell carcinoma (RCC) and imatinib refractory/intolerant gastrointestinal stromal tumor (GIST). Sunitinib has received regulatory approval in these two indications, and is at present being investigated across a broad array of solid tumors. Despite these initial results, several questions remain to optimize the utility of this agent.
Insights
Sunitinib, a receptor tyrosine kinase inhibitor, shows significant antitumor effects in advanced renal cell carcinoma (RCC) and gastrointestinal stromal tumor (GIST). Further research is needed to optimize its use in various solid tumors.
Area of Science:
- Oncology
- Pharmacology
- Molecular Biology
Background:
- Sunitinib targets receptor tyrosine kinases involved in tumor angiogenesis, such as the vascular endothelial growth factor (VEGF) receptor.
- In vitro and murine models demonstrate potent inhibition and antiangiogenic effects of sunitinib.
Purpose of the Study:
- To summarize the efficacy and tolerability of sunitinib in clinical studies.
- To highlight its approved indications and ongoing investigations in solid tumors.
Main Methods:
- Review of in vitro and murine model data.
- Analysis of human clinical trial results for sunitinib dosing and efficacy.
- Summary of regulatory approvals and ongoing investigations.
Main Results:
- Sunitinib is a well-tolerated small-molecule inhibitor at a 50 mg daily intermittent dose.
- Significant antitumor activity observed in advanced renal cell carcinoma (RCC) and imatinib-resistant gastrointestinal stromal tumor (GIST).
Conclusions:
- Sunitinib is approved for RCC and GIST, demonstrating significant clinical benefit.
- Ongoing investigations explore sunitinib's potential across a wider range of solid tumors.
- Further research is required to fully optimize sunitinib's therapeutic utility.
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