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Radiation Could Aid in Increasing Pancreatic Cancer Resections

Brandon Scalea
Published: Monday, Jan 28, 2019

Better utilization of radiation therapy can allow for more patients with pancreatic cancer to undergo resection, and has the potential to lead to better outcomes, said Amol K. Narang, MD.

, Narang discussed recent advances made in the treatment of pancreatic cancer and explained how radiation oncology can be used to provide further clinical benefit to this patient population.

OncLive: What does the current pancreatic cancer treatment paradigm look like?

Narang: Over the past few years, there have been improvements made in the systemic therapy we give these patients. We are using combinations of various chemotherapy agents that have been around for quite some time. There were 2 landmark studies some years ago that looked at FOLFIRINOX and gemcitabine in patients with metastatic disease. The studies compared that regimen with gemcitabine alone, which was the standard of care. The combination showed significant improvement in patient outcomes. With the proof of concept for these chemotherapy combinations, it geared us towards being more locally aggressive in pancreatic cancer. Previously, there had been a lot of disillusionment in doing this given the high rate of systemic relapse. 

At Johns Hopkins Medicine, we published our experience [in 2018] for patients with locally advanced disease who underwent treatment through our multidisciplinary clinic. What we found was that for these patients, most of them received these more aggressive regimens and undergo exploration. Three-quarters of those patients were able to have their tumor resected. About 90% of the patients who underwent resection underwent a margin-negative resection, which is very encouraging. Median OS has been 36 months for these patients, but perhaps, with longer follow-up, we will see even more impressive results. Again, this is similar to what we see in the patients with the most favorable presentation of disease. 

Where does radiation fit into this paradigm?

In terms of radiation, it can be useful for several different endpoints. In the setting of more aggressive attempts at resection, the radiation can be helpful for margin sterilization, helping the surgeons peel the tumor off the blood vessels; this is the impediment to resection. Now that more patients are being taken to exploration, it assists in achieving a margin-negative resection. The other thing that we are finding is that in this patient population with locally advanced tumors, local recurrence is a common pattern whereas in resectable disease it is a distant pattern of failure. Radiation can be beneficial in that setting as well.
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