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Published on: January 22, 2018
Gastrointestinal neuroendocrine tumors: a role for targeted therapies?
1Department of Medical Oncology, Dana-Farber Cancer Institute and Harvard Medical School, Dana-Farber Cancer Institute, 44 Binney Street, Boston, Massachusetts 02115, USA. matthew_kulke@dfci.harvard.edu
Abstract:
Traditional therapies have offered patients with advanced gastrointestinal neuroendocrine tumors limited benefit. Selected patients with hepatic metastases may benefit from surgical debulking, embolization, or other ablative therapies. While somatostatin analogs are highly effective in controlling symptoms of hormonal secretion, they are only rarely associated with tumor regression. The clinical benefit associated with the administration of systemic agents such as interferon-alpha or cytotoxic chemotherapy is less clear, and the widespread use of such regimens has been limited by their relatively modest anti-tumor activity, as well as concerns regarding their potential toxicity. The mixed clinical results seen with these agents in neuroendocrine tumors have led to great interest in the development of novel treatment approaches for patients with advanced disease. Recent clinical studies of novel agents, particularly those targeting the vascular endothelial growth factor pathway and mammalian target of rapamycin, have demonstrated promising activity in patients with advanced neuroendocrine tumors. Ongoing randomized studies should help better define the role these and other targeted agents will play in the future treatment of patients with this disease.
Insights
Traditional treatments offer limited benefit for advanced gastrointestinal neuroendocrine tumors. Novel targeted therapies, including those inhibiting vascular endothelial growth factor and mTOR, show promise for improved patient outcomes.
Area of Science:
- Oncology
- Gastroenterology
- Medical Therapeutics
Background:
- Advanced gastrointestinal neuroendocrine tumors (GI-NETs) present significant treatment challenges.
- Traditional therapies like debulking, somatostatin analogs, interferon-alpha, and chemotherapy offer limited efficacy and potential toxicity.
- There is a critical need for more effective treatment strategies for advanced GI-NETs.
Purpose of the Study:
- To review the current landscape of treatment for advanced gastrointestinal neuroendocrine tumors.
- To highlight the emerging role of novel targeted agents in managing advanced GI-NETs.
- To discuss the potential of future therapeutic approaches based on ongoing research.
Main Methods:
- Review of existing clinical studies and literature on gastrointestinal neuroendocrine tumor treatments.
- Analysis of the efficacy and toxicity profiles of traditional and novel systemic agents.
- Evaluation of ongoing clinical trials investigating targeted therapies.
Main Results:
- Traditional therapies provide limited anti-tumor activity and benefit for advanced GI-NETs.
- Somatostatin analogs effectively manage hormonal symptoms but rarely induce tumor regression.
- Novel agents targeting vascular endothelial growth factor and mammalian target of rapamycin pathways show promising anti-tumor activity in early studies.
Conclusions:
- Novel targeted therapies represent a promising advancement in the treatment of advanced gastrointestinal neuroendocrine tumors.
- Ongoing clinical trials are crucial for defining the role of these agents in future treatment paradigms.
- Further research is needed to optimize the use of targeted agents and improve patient outcomes.
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