Zev A. Wainberg, MD, of the UCLA Medical Center, discusses the first subset analysis of how a combined positive score in gastric and gastroesophageal junction cancers related to the efficacy of pembrolizumab in PD-L1–positive disease (Abstract 427).
Eyal Meiri, MD, of the Cancer Treatment Centers of America at Southeastern Regional Medical Center, discusses his findings on heavily pretreated patients with colorectal cancer with high tumor mutational burden. Monotherapy with pembrolizumab showed antitumor activity, which merits further study to confirm efficacy (Abstract 133).
Van K. Morris, MD, of The University of Texas MD Anderson Cancer Center, discusses the COBRA study, which is examining circulating tumor DNA and its ability to predict whether patients with resected stage IIA colon cancer may benefit from adjuvant chemotherapy (Abstract TPS261).
Danielle S. Bitterman, MD, of the Harvard University Radiation Oncology Program and Massachusetts General Hospital, discusses an analysis of genomic and clinical data from 97 patients with pancreatic ductal adenocarcinoma with circulating tumor DNA. Mutations were most frequently detected in patients with locally advanced and metastatic disease (Abstract 753).
Scott Kopetz, MD, PhD, of The University of Texas MD Anderson Cancer Center, discusses phase III findings from the BEACON CRC trial, which had demonstrated that the triplet regimen of encorafenib, cetuximab, and binimetinib significantly improved overall survival in patients with a BRAF V600E mutation. The new analysis showed that the regimen also led to substantial improvement in patient-reported quality of life compared with current standard of care (Abstract 8).
Brian M. Wolpin, MD, of Dana-Farber Cancer Institute, discusses a noninvasive blood test evaluating methylation of circulating free DNA. In his study, the blood test detected multiple gastrointestinal cancers at a sensitivity of approximately 81% and a prespecified specificity of > 99%. It also accurately localized the tissue of origin across more than 20 cancer types (Abstract 283).
