Robert A. Olson, MD, on Oligometastases: New Data on Stereotactic Ablative Radiotherapy
2021 ASTRO Annual Meeting
Robert A. Olson, MD, of the University of British Columbia, discusses phase II findings from the SABR-5 trial on stereotactic ablative radiotherapy for up to five oligometastases. Although toxicity of liver and adrenal metastases warrants caution, the trial seemed to show that this type of radiation treatment is relatively safe and should be studied further, given the long overall survival in this patient population (Abstract 6).
Diana D. Shi, MD, of Dana-Farber Cancer Institute and Brigham and Women’s Cancer Center, discusses studies being planned and already underway to test BAY 2402234, a de novo pyrimidine synthesis inhibitor that possibly could be used clinically to target IDH-mutant gliomas and may act as a tumor-selective radiosensitizer (Abstract 167).
Benjamin Movsas, MD, of the Henry Ford Cancer Center, discusses results from the NRG Oncology/RTOG 0815 study, which explored dose-escalated radiotherapy alone or in combination with short-term hormonal therapy for patients with intermediate-risk prostate cancer. In addition to clinical outcomes, Dr. Movsas discusses patient-reported results in the study that may help patients make informed decisions when choosing between these treatment options (Abstract 4).
C. Jillian Tsai, MD, PhD, of Memorial Sloan Kettering Cancer Center, discusses results from the first randomized trial of stereotactic body radiation therapy (SBRT) to treat oligoprogressive, metastatic lung and breast cancers. The standard of care for patients with these types of tumors is to switch to a different systemic treatment. Adding local therapy such as SBRT may help treat drug-resistant lesions (Abstract LBA3).
Mark K. Buyyounouski, MD, MS, of Stanford University, discusses phase III results from the NRG Oncology GU003 trial, which showed that, post-prostatectomy, using fewer—but higher—doses of radiation does not appear to increase long-term side effects or reduce quality of life when compared with conventional radiation treatment (Abstract 3).
Aadel A. Chaudhuri, MD, PhD, of Washington University School of Medicine in St. Louis, discusses circulating tumor DNA, which has the potential to better personalize treatment for patients with oligometastatic cancer and help clinicians determine whether to offer systemic therapy alone or curative-intent local consolidative therapy.