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Abstract
Introduction: Metastatic melanoma continues to present a significant therapeutic challenge, with an incidence rate rising faster than that of any other cancer. The last 5 years have seen a revolution in the development of new treatments for advanced melanoma, with oncogene targeted agents and checkpoint inhibitor immunotherapies providing the first convincing evidence of a positive shift in overall survival. The role of oncolytic virotherapy in this rapidly evolving field has long been the subject of debate. However, it is with the development of Talimogene Laheparepvec (T-Vec), an intratumourally administered, genetically modified clinical herpes simplex virus-1 strain that has shown positive results in Phase III testing, that the potential for the use of OV may be realised.
Areas covered: This review will outline some of the recent advances in the treatment of advanced melanoma, with a detailed overview of evidence surrounding the development of T-Vec. A literature search was conducted using the databases ‘Medline’ and ‘Pubmed’, including a subsequent manual search of references to identify papers of further relevance.
Expert opinion: As the pivotal OPTiM trial concludes, we outline some of the potential new directions for T-Vec and OV therapy and evaluate the ever-increasing role these novel agents are likely to play in the future landscape of cancer immunotherapy.
Declaration of interests
Funding for this work was received from Cancer Research UK Leeds Centre and the Leeds Experimental Cancer Medicine Centre. The authors have no other relevant affiliations or financial involvement with any organization or entity with a financial interest in or financial conflict with the subject matter or materials discussed in the manuscript. This includes employment, consultancies, honoraria, stock ownership or options, expert testimony, grants or patents received or pending, or royalties.