Abstract
Gastroenteropancreatic neuroendocrine tumors (GEP-NETs) show limited sensitivity to cytotoxic agents, requiring the search for novel therapies. Recently, data from a phase III trial demonstrated that sunitinib produces a clinically significant improvement in progression-free survival in patients with unresectable, advanced, or metastatic GEP-NETs. Based on this finding, sunitinib became the first targeted drug approved for the treatment of GEP-NETs, paving the way for the approval of other anticancer agents in this drug-orphan disease. To date, results of trials involving other multitargeted tyrosine kinase inhibitors, such as sorafenib, the monoclonal antibody bevacizumab, and insulin-like growth factor 1 receptor inhibitors, have also shown promising results, and some are already being studied in phase III trials. This review updates the results of ongoing trials using inhibitors of growth factors and tyrosine kinase receptors involved in the carcinogenesis of GEP-NETs.
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Acknowledgments
The author acknowledges Dr. Ximena Alvira from HealthCo SL (Madrid, Spain) for her assistance in the preparation of this manuscript and Pfizer Spain for the financial support of medical writing services.
Conflicts of interest
Eric Raymond was consultant for Pfizer Inc. and Bayer Pharma. Alfredo Carrato has been consultant for Pfizer Inc. The authors declare that they do not have any conflict of interest that may inappropriately influence this work.
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Raymond, E., Hobday, T., Castellano, D. et al. Therapy innovations: tyrosine kinase inhibitors for the treatment of pancreatic neuroendocrine tumors. Cancer Metastasis Rev 30 (Suppl 1), 19–26 (2011). https://doi.org/10.1007/s10555-011-9291-2
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DOI: https://doi.org/10.1007/s10555-011-9291-2