Advances in the Systemic Treatment of Neuroendocrine Tumors in the Era of Molecular Therapy

ISSN: 1875-5992 (Online)
ISSN: 1871-5206 (Print)


Volume 14, 10 Issues, 2014


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Anti-Cancer Agents in Medicinal Chemistry

Formerly: Current Medicinal Chemistry - Anti-Cancer Agents

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Editor-in-Chief:
Michelle Prudhomme
Universite Blaise Pascal - C.N.R.S
Aubiere Cedex
France


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Advances in the Systemic Treatment of Neuroendocrine Tumors in the Era of Molecular Therapy

Author(s): Roland Leung, Brian Lang, Hilda Wong, Joanne Chiu, KY Wan, Tony Shek, YC Woo, CY Lo and Thomas Yau

Affiliation: Room 211B, 2/F New Clinical Building, Queen Mary Hospital, 102 Pokfulam Road, Hong Kong

Abstract

Neuroendocrine tumors (NETs) are heterogeneous in underlying tumor biology and clinical presentations. They are generally classified according to their degree of differentiation and sites of origin. Moreover, NETs are further characterized by their secreted bioactive neuroamine. The treatment paradigm used to be surgical intervention in early disease and mostly palliative nature in the metastatic setting. With an increase in the understanding of the molecular signaling pathways involved in tumor growth, there are various emerging treatment options for patients with advanced NETs. Somatostatin analogs have both anti-tumor effects as well as symptom palliation associated with the secreted neuropeptides. Peptide-radio-receptor treatment (PRRT) using radio-labeled peptides which binds to somatostatin receptor is a useful anti-tumor treatment but limited by general availability. Sunitinib, a multi-targeted tyrosine kinase inhibitor, has recently been shown to improve the survival of pancreatic NETs patients. Similarly, the use of an mTOR inhibitor — everolimus, either alone or in combination with somatostatin analogs have demonstrated encouraging efficacy in treating advanced NETs. The success of these two agents in pancreatic NETS supports the notion that targeting angiogenesis and/or PI3K/AKT/mTOR pathway is an important strategy for making therapeutic advances in this disease. There are now many ongoing trials in exploring the role of other novel agents in treating patients with pancreatic NETs or carcinoid. The major plaguing problem in this era is the differential response to biological agents amongst NETs of different anatomical origins. Pancreatic NETs are generally more responsive to both chemotherapy and targeted agents than NETs of other sites. Thus, the development of potential predictive and prognostic biomarkers to tailor various molecular therapies to different NETs populations is a major unmet need.

Keywords: Carcinoid, pancreatic, neuroendocrine, sunitinib, everolimus

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Article Details

Volume: 13
First Page: 1
Last Page: 7
Page Count: 7
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