A Phase II Trial of Mutation-Targeted Therapy With Sunitinib or Everolimus in Patients With Advanced Low-or Intermediate Grade Neuroendocrine Tumors of the Gastrointestinal Tract and Pancreas With or Without Cytoreductive Surgery

Background:

• Neuroendocrine tumors (NETs) of the gastrointestinal tract and pancreas are a rare and heterogeneous group of neoplasms with unique tumor biology, natural history, and clinical management issues.
• Most NETs are sporadic, but they can be part of familial cancer syndromes such as multiple endocrine neoplasia type 1 (MEN1), neurofibromatosis type 1 (NF1) or Von Hippel-Lindau (VHL) syndrome.
• Well-differentiated, low or intermediate grade NETs have a heterogeneous natural history.
• Surgery is the only curative treatment option in patients with localized early stage NETs.
• The optimal management strategy for patients with advanced NETs is unknown.
• The majority of NETs have somatic mutations in MEN1 and cyclin dependent kinase inhibitor 1B (CDKN1B), and genes involved in the phosphatidylinositol-3-kinase (PI3K/AKT/mammalian target of rapamycin (mTOR) signaling pathway, and/or overexpression of growth factors and their receptors such as vascular endothelial growth factor (VEGF), vascular endothelial growth factor receptors (VEGFR), platelet-derived growth factor (PDGF), and platelet-derived growth factor receptors (PDGFR) that can be targeted for therapy.
• Survival in patients with NETs and somatic mutations is better than patients with wild type NETs.
• Sunitinib (multi-tyrosine kinase inhibitor) and Everolimus (mTOR signaling pathway inhibitor) are currently approved for the treatment of progressive, unresectable, locally advanced or metastatic pancreatic NETs.
• However, mutation targeted therapy with Sunitinib or Everolimus has not been studied in this patient population.
• The present proposal aims to determine if mutation targeting therapy for patients with advanced low- or intermediate grade NETs is more effective than historically expected results.

Objectives:

-To determine the progression-free survival in patients with NETs of the gastrointestinal tract and pancreas treated with Sunitinib or Everolimus based on tumor genotyping.

Eligibility: