PMID- 36139689 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20220928 IS - 2072-6694 (Print) IS - 2072-6694 (Electronic) IS - 2072-6694 (Linking) VI - 14 IP - 18 DP - 2022 Sep 19 TI - The Evolving Interplay of SBRT and the Immune System, along with Future Directions in the Field. LID - 10.3390/cancers14184530 [doi] LID - 4530 AB - In this commentary, we describe the potential of highly ablative doses utilizing Stereotactic Body Radiation Therapy (SBRT) in single or few fractions to enhance immune-responsiveness, how timing of this approach in combination with immune-checkpoint inhibitors may augment treatment-effect, and whether Personalized Ultrafractionated Stereotactic Adaptive Radiation Therapy (PULSAR) is an avenue for future advancement in the continued endeavor to foster a systemic effect of therapy beyond the radiation treatment field. The ablative potential of SBRT may support an increase in tumor-antigen presentation, enhancement of immune-stimulatory components, and an improvement in tumor-microenvironment immune cell infiltration. Furthermore, the latest advancement of ablative radiation delivery is PULSAR-based therapy, whereby ablative doses are delivered in pulses of treatment that may be several weeks apart, combined with adaptive treatment to tumor changes across time. The benefits of this novel approach include the ability to optimize direct tumor control by assessment of tumor size and location via dedicated imaging acquired prior to each delivered pulse, and further potentiation of immune recognition through combination with concurrent immune-checkpoint blockade. FAU - Miljanic, Mihailo AU - Miljanic M AD - Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. FAU - Montalvo, Steven AU - Montalvo S AD - Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. FAU - Aliru, Maureen AU - Aliru M AD - Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. FAU - Song, Tidie AU - Song T AD - Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. FAU - Leon-Camarena, Maria AU - Leon-Camarena M AD - Department of Internal Medicine, University of Texas at Austin, Austin, TX 78705, USA. FAU - Innella, Kevin AU - Innella K AD - Philadelphia College of Osteopathic Medicine, Philadelphia, PA 19131, USA. FAU - Vujovic, Dragan AU - Vujovic D AD - Icahn School of Medicine at Mount Sinai, The Mount Sinai Hospital, New York, NY 10029, USA. FAU - Komaki, Ritsuko AU - Komaki R AD - Emeritus Professor of Radiation Oncology, UT MDACC, Adjunct Professor of Radiation Oncology Baylor College of Medicine, Houston, TX 77030, USA. FAU - Iyengar, Puneeth AU - Iyengar P AD - Department of Radiation Oncology, University of Texas Southwestern Medical Center, Dallas, TX 75390, USA. LA - eng PT - Journal Article DEP - 20220919 PL - Switzerland TA - Cancers (Basel) JT - Cancers JID - 101526829 PMC - PMC9497192 OTO - NOTNLM OT - PULSAR OT - SAbR OT - SBRT OT - SBRT and immunotherapy OT - adaptive radiation therapy OT - immunotherapy in combination with radiation therapy COIS- The authors declare no conflict of interest. EDAT- 2022/09/24 06:00 MHDA- 2022/09/24 06:01 PMCR- 2022/09/19 CRDT- 2022/09/23 01:07 PHST- 2022/07/20 00:00 [received] PHST- 2022/09/04 00:00 [revised] PHST- 2022/09/15 00:00 [accepted] PHST- 2022/09/23 01:07 [entrez] PHST- 2022/09/24 06:00 [pubmed] PHST- 2022/09/24 06:01 [medline] PHST- 2022/09/19 00:00 [pmc-release] AID - cancers14184530 [pii] AID - cancers-14-04530 [pii] AID - 10.3390/cancers14184530 [doi] PST - epublish SO - Cancers (Basel). 2022 Sep 19;14(18):4530. doi: 10.3390/cancers14184530.