NCCN task force report: mTOR inhibition in solid tumors

Robert A. Figlin, Elizabeth Brown, Andrew J. Armstrong, Wallace Akerley, Al B. Benson, Harold J. Burstein, David S. Ettinger, Phillip G. Febbo, Matthew G. Fury, Gary R. Hudes, Merrill S. Kies, Eunice L. Kwak, Robert J. Morgan, Joanne Mortimer, Karen Reckamp, Alan P. Venook, Frank Worden, Yun Yen

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


The mammalian target of rapamycin (mTOR) protein complex functions as an integration center for various intracellular signaling pathways involving cell cycle progression, proliferation, and angiogenesis. These pathways are frequently dysregulated in cancer, and therefore mTOR inhibition is a potentially important antitumor target. Commercially available mTOR inhibitors include rapamycin (i.e., sirolimus) and temsirolimus. Other agents under investigation include everolimus and deforolimus. mTOR inhibition has been studied in various solid tumors, including breast, gynecologic, gastrointestinal, prostate, lung, and head and neck cancers. Studies have focused on mTOR inhibition as a monotherapy or in combination with other drugs based on the principle that inhibiting as many targets as possible reduces the emergence of drug resistance. Temsirolimus is currently the only mTOR inhibitor that is specifically labeled for treatment of solid tumors. However, preclinical studies and early-phase trials are rapidly evolving. Additionally, research is further defining the complicated mTOR pathways and how they may be disordered in specific malignancies. To address these issues, NCCN convened a task force to review the underlying physiology of mTOR and related cellular pathways, and to review the current status of research of mTOR inhibition in solid tumors.

Original languageEnglish (US)
Pages (from-to)S1-S20
JournalJNCCN Journal of the National Comprehensive Cancer Network
Issue numberSUPPL. 5
StatePublished - 2008


  • Cancer
  • Deforolimus
  • Everolimus
  • Malignancy
  • NCCN Clinical Practice Guidelines
  • Rapamycin
  • Targeted therapy
  • Temsirolimus
  • mTOR
  • mTOR inhibition

ASJC Scopus subject areas

  • Oncology


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