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Advances in Radiation Oncology for Pancreatic Cancer: An Updated Review

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Simple Summary Pancreatic cancers are highly aggressive tumors that carry a poor prognosis. With recent advances in radiation therapy techniques and systemic therapy, there is hope that the treatment landscape… Click to show full abstract

Simple Summary Pancreatic cancers are highly aggressive tumors that carry a poor prognosis. With recent advances in radiation therapy techniques and systemic therapy, there is hope that the treatment landscape for pancreatic cancers will improve in the near future. This review summarizes radiation dose escalation strategies to improve outcomes in locally advanced pancreatic cancer as well as novel neoadjuvant therapy strategies to improve outcomes in resectable and borderline resectable pancreatic cancers. Abstract This review aims to summarize the recent advances in radiation oncology for pancreatic cancer. A systematic search of the MEDLINE/PubMed database and Clinicaltrials.gov was performed, focusing on studies published within the last 10 years. Our search queried “locally advanced pancreatic cancer [AND] stereotactic body radiation therapy (SBRT) [OR] hypofractionation [OR] magnetic resonance guidance radiation therapy (MRgRT) [OR] proton” and “borderline resectable pancreatic cancer [AND] neoadjuvant radiation” and was limited only to prospective and retrospective studies and metanalyses. For locally advanced pancreatic cancers (LAPC), retrospective evidence supports the notion of radiation dose escalation to improve overall survival (OS). Novel methods for increasing the dose to high risk areas while avoiding dose to organs at risk (OARs) include SBRT or ablative hypofractionation using a simultaneous integrated boost (SIB) technique, MRgRT, or charged particle therapy. The use of molecularly targeted agents with radiation to improve radiosensitization has also shown promise in several prospective studies. For resectable and borderline resectable pancreatic cancers (RPC and BRPC), several randomized trials are currently underway to study whether current neoadjuvant regimens using radiation may be improved with the use of the multi-drug regimen FOLFIRINOX or immune checkpoint inhibitors.

Keywords: oncology; pancreatic cancer; therapy; radiation; pancreatic cancers

Journal Title: Cancers
Year Published: 2022

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