Harnessing and Optimizing the Interplay between Immunotherapy and Radiotherapy to Improve Survival Outcomes.

ABSTRACT: In the past, radiotherapy was primarily used to control local disease, but recent technological advances in accurate, high-dose ionizing radiation (IR) delivery have not only increased local tumor control but in some cases reduced metastatic burden. These "off target" therapeutic effects of IR at nonirradiated tumor sites, also known as abscopal effects, are thought to be mediated by tumor antigen-primed T cells that travel to metastatic sites and promote tumor regression. Similarly, early indications reveal that IR in combination with immune checkpoint inhibitors, such as ipilimumab (anti-CTLA-4) and nivolumab (anti-PD-1), can provide superior therapeutic responses. These observations suggest that local radiotherapy results in altered gene expression, exposure of new antigens, or cell dea

SUBMITTER: Mujoo K 

PROVIDER: S-EPMC6072560 | biostudies-literature | 2018 Aug

REPOSITORIES: biostudies-literature