Current Prospects of Molecular Therapeutics in Head and Neck Squamous Cell Carcinoma

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Abstract

Head and neck squamous cell carcinoma (HNSCC) has an estimated annual global death rate of approximately 300,000. Despite advances in surgical techniques, the advent of efficient radiation delivery methods, and the introduction of newer chemotherapeutic agents, the survival rate for HNSCC has alarmingly remained unchanged for the past 50 years. However, there have been some promising developments in this field recently. Tumor protein 53 (TP53)-based gene therapeutics such as Gendicine® and Advexin®, and oncolytic viral therapeutics such as ONYX-015 and H101 have shown encouraging results and are gaining momentum. Cetuximab, the first US Food and Drug Administration-approved targeted therapeutic in HNSCC, although had a promising run initially, failed to garner enough attention subsequently due to its poor results in locally advanced HNSCC. Currently, its major utility is in palliation of recurrent and/or metastatic HNSCC as a part of the EXTREME regimen alongside cisplatin/carboplatin and fluorouracil. Of late, immunotherapeutics are evolving rapidly in HNSCC by demonstrating satisfactory effectiveness and acceptable tolerance both in locally advanced and recurrent tumors, and both as monotherapy and in combination with other agents. Recent accelerated approval of two immune checkpoint receptor blockers, pembrolizumab and nivolumab, has rejuvenated enthusiasm among clinicians and researchers by opening up a new domain for targeted and co-targeted therapeutics. The interim results of many ongoing trials and the latest updates of previous landmark trials such as KEYNOTE and CheckMate show promising trends in this regard. Immunotherapeutic agents belonging to different classes, such as durvalumab, epacadostat, motolimod, and T4 immunotherapy, are all being investigated presently in various therapeutic roles. Human papilloma virus (HPV)-based vaccines are now understood to have both a preventive and therapeutic role in HNSCC. Phase I/II trials are underway evaluating the safety profile, tolerable limits, and therapeutic efficacy of several therapeutic vaccines against HPV-driven HNSCC. Similarly, co-targeting therapeutics and precision medicine concepts are exploring newer and effective options including individuating the therapy based on particular tumor’s molecular makeup and so on, the results of which are expected to change the landscape of HNSCC.

Original languageEnglish
Pages (from-to)269-289
Number of pages21
JournalPharmaceutical Medicine
Volume33
Issue number4
DOIs
Publication statusPublished - 01-08-2019

All Science Journal Classification (ASJC) codes

  • Pharmacology
  • Pharmacology (medical)

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