Syed Muneeb Alam, MD, of Memorial Sloan Kettering Cancer Center, discusses study findings evaluating links among microsatellite instability status, tumor mutational burden, and response to immune checkpoint blockade in patients with microsatellite instability–high urothelial carcinoma (Abstract 536).
Thomas Powles, MD, of Barts Cancer Institute, Cancer Research UK Experimental Cancer Medicine Centre, and Queen Mary University of London, discusses overall survival results from the phase III KEYNOTE-564 study of adjuvant pembrolizumab vs placebo in patients with clear cell renal cell carcinoma (Abstract LBA359).
Andrea B. Apolo, MD, of the National Cancer Institute, National Institutes of Health, discusses the results of the AMBASSADOR Alliance A031501 study, which showed adjuvant pembrolizumab improved disease-free survival vs observation for patients with high-risk muscle-invasive urothelial carcinoma after radical surgery. According to Dr. Apolo, the findings support adjuvant pembrolizumab as a new treatment option for this population (Abstract LBA531).
Maha H.A. Hussain, MD, of the Robert H. Lurie Comprehensive Cancer Center, Northwestern University, discusses phase II findings from the BRCAAway trial. This study showed that in patients with metastatic castration-resistant prostate cancer with BRCA1/2 or ATM alterations, abiraterone and prednisone plus olaparib was well tolerated and resulted in a longer progression-free survival than either agent alone or sequentially.
Rohit K. Jain, MD, MPH, of the H. Lee Moffitt Cancer Center and Research Institute, discusses a novel phase II trial of pembrolizumab plus cabozantinib. The study showed this combination may be efficacious as first-line therapy for patients with metastatic urothelial carcinoma, including those who are ineligible for cisplatin. Further investigation with a focus on predictive biomarkers is ongoing (Abstract 539).
David H. Aggen, MD, PhD, of Memorial Sloan Kettering Cancer Center, discusses reportedly the first data to describe an inverse correlation between HER2 immunohistochemistry expression and PD-L1 combined positive score. According to Dr. Aggen, these and other findings by his team may provide a foundation for further HER2-directed advanced bladder cancer studies (Abstract 538).
