Current Treatment Options for Recurrent or Metastatic Head and Neck Squamous Cell Carcinoma

Author:

Sacco Assuntina G.1,Cohen Ezra E.1

Affiliation:

1. All authors: Moores Cancer Center, University of California, San Diego, La Jolla, CA.

Abstract

This review highlights the evidence-based data to support current best management practices for patients with recurrent and/or metastatic (R/M) head and neck squamous cell carcinoma (HNSCC). Current limitations and areas of emerging therapeutics are also emphasized. The cornerstone of palliation for patients with R/M HNSCC is a platinum-based backbone. Platinum doublets induce higher response rates than single agents but do not demonstrate a survival advantage and are associated with increased toxicity. The only regimen to demonstrate survival superiority is platinum, fluorouracil, and cetuximab, a monoclonal antibody directed against the epidermal growth factor receptor (EGFR). EGFR inhibitors, including monoclonal antibodies and tyrosine kinase inhibitors, have achieved only modest success in R/M HNSCC, illustrating the importance of identifying predictive biomarkers and finding ways to overcome mechanisms of resistance. Although phosphoinositide 3-kinase pathway alterations are present at a high rate in HNSCC, the identification of efficacious agents in patients with activating alterations has yet to be discovered. Immunotherapy represents an attractive treatment strategy for R/M HNSCC, with promising preliminary data from studies involving immune checkpoint blockade and toll-like receptor agonists. Human papillomavirus has a prognostic role in R/M disease; therefore, stratification of patients by human papillomavirus status in clinical trials is indicated. Although under-represented in clinical trials, elderly patients experience similar survival outcomes compared with younger patients, albeit with increased toxicity. Despite therapeutic advances, prognosis nonetheless remains poor for patients with R/M HNSCC. Enrollment of patients onto clinical trials to investigate novel therapeutics and identify predictive biomarkers is necessary to further refine and improve outcomes.

Publisher

American Society of Clinical Oncology (ASCO)

Subject

Cancer Research,Oncology

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