Vinai Gondi, MD, on Glioblastoma: Dose Intensification, IMRT, Standard Radiotherapy, and Temozolomide
2020 ASTRO Annual Meeting
Vinai Gondi, MD, of Northwestern Medicine Cancer Center and Northwestern Medicine Proton Center, discusses the preliminary results of an NRG Oncology study of radiotherapy dose intensification using intensity-modulated radiotherapy vs standard-dose radiotherapy with temozolomide in patients with newly diagnosed glioblastoma (Abstract 42).
Neha Vapiwala, MD, of the University of Pennsylvania, who served as a discussant for LBA1, summarizes her review of this study of patients with prostate cancer who had biochemical recurrence in the post-prostatectomy setting, who were candidates for salvage radiotherapy, and who received either conventional imaging or PET scans to help determine the course of treatment.
Linda G.W. Kerkmeijer, MD, PhD, of the University Medical Center Utrecht and Radboud University Medical Center, discusses results from the phase III FLAME trial, which explored the question of whether biochemical disease–free survival can be improved by adding a focal boost to the intraprostatic lesion in whole-gland external-beam radiotherapy for patients with intermediate- and high-risk prostate cancers (Abstract 126).
Cynthia Menard, MD, of the University of Montreal, discusses a study on the use of prostate-specific membrane antigen PET and CT to guide treatment. The scans led to high rates of new lesion detection and therefore intensification of radiotherapy for patients with prostate cancer, without an increase in side effects (Abstract 34).
Paul Sargos, MD, of the Institut Bergonié, discusses phase III findings from the GETUG-AFU 17 study, which compared adjuvant vs early salvage radiotherapy, both combined with short-term androgen-deprivation therapy after radical prostatectomy for localized prostate cancer. Although lacking statistical power, the study showed no benefit in event-free survival for adjuvant compared to salvage radiotherapy (Abstract 33).
Jing Li, MD, PhD, of The University of Texas MD Anderson Cancer Center, discusses phase III results showing the use of stereotactic radiosurgery in patients with 4 to 15 brain metastases, compared with whole-brain radiotherapy, may better preserve cognitive function and minimize the interruption of systemic therapy without compromising overall survival (Abstract 41).