Everolimus in advanced pancreatic neuroendocrine tumors: The clinical experience

James C. Yao, Alexandria T. Phan, Valentine Jehl, Gaurav Shah, Funda Meric-Bernstam

Research output: Contribution to journalReview article

56 Scopus citations

Abstract

The incidence of neuroendocrine tumors (NET) has increased dramatically in the past 30 years. This information has revitalized basic and clinical research into the molecular biology of NET and has resulted in the recent approval of new therapies for pancreatic NET (pNET), including the oral inhibitor of the mTOR everolimus. Everolimus significantly improved progression-free survival among patients with pNET in the phase III RADIANT-3 study. Here, we review the clinical studies showing the efficacy of everolimus in pNET and summarize the translational science from these studies. To understand the mechanisms of resistance and cause of treatment failure, we compared the type of progression events observed in the everolimus and placebo arms of the RADIANT-3 study. Comparison of the everolimus arm to the placebo arm indicated the fractions of progression events due to new metastasis only (21% vs. 22%), growth of preexisting lesions only (54% vs. 49%), and new metastasis along with growth of preexisting lesions (24% vs. 27%) were similar. These results suggest that although everolimus delays disease progression in patients with pNET, patients who experience disease progression while on everolimus do not appear to have a more aggressive metastatic phenotype than those whose disease progresses while on placebo.

Original languageEnglish (US)
Pages (from-to)1449-1453
Number of pages5
JournalCancer research
Volume73
Issue number5
DOIs
StatePublished - Mar 1 2013

ASJC Scopus subject areas

  • Oncology
  • Cancer Research

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