Molecular medicine is rapidly changing the diagnosis and management of cancer of unknown primary. The science, business, and economics of the genomic revolution have moved at such a pace that coordinating practical application of all available tools, such as gene expression analysis and immunohistochemistry, often seems to clash. In fact, very little work has been done to actively coordinate use of these techniques, each of which can be very resource-intensive. The Institute of Medicine proposed the STEEEP principles, a basic set of guidelines that maintain that the best patient care is safe, timely, effective, efficient, equitable, and patient-centered. Application of these principles will help lead to a better understanding of the most appropriate use of modern diagnostic modalities.
David S. Ettinger, Mark Agulnik, Justin M. M. Cates, Mihaela Cristea, Crystal S. Denlinger, Keith D. Eaton, Panagiotis M. Fidias, David Gierada, Jon P. Gockerman, Charles R. Handorf, Renuka Iyer, Renato Lenzi, John Phay, Asif Rashid, Leonard Saltz, Lawrence N. Shulman, Jeffrey B. Smerage, Gauri R. Varadhachary, Jonathan S. Zager, and Weining (Ken) Zhen
David S. Ettinger, Charles R. Handorf, Mark Agulnik, Daniel W. Bowles, Justin M. Cates, Mihaela Cristea, Efrat Dotan, Keith D. Eaton, Panagiotis M. Fidias, David Gierada, G. Weldon Gilcrease, Kelly Godby, Renuka Iyer, Renato Lenzi, John Phay, Asif Rashid, Leonard Saltz, Richard B. Schwab, Lawrence N. Shulman, Jeffrey B. Smerage, Marvaretta M. Stevenson, Gauri R. Varadhachary, Jonathan S. Zager, Weining (Ken) Zhen, Mary Anne Bergman, and Deborah A. Freedman-Cass
The NCCN Guidelines for Occult Primary tumors provide recommendations for the evaluation, workup, management, and follow-up of patients with occult primary tumors (cancers of unknown primary). These NCCN Guidelines Insights summarize major discussion points of the 2014 NCCN Occult Primary panel meeting. The panel discussed gene expression profiling (GEP) for the identification of the tissue of origin and concluded that, although GEP has a diagnostic benefit, a clinical benefit has not been demonstrated. The panel recommends against GEP as standard management, although 20% of the panel believes the diagnostic benefit of GEP warrants its routine use. In addition, the panel discussed testing for actionable mutations (eg, ALK) to help guide choice of therapy, but declined to add this recommendation.