Elizabeth Smyth, MD, on New Data in Gastric/Gastroesophageal Cancers
ASCO 2026
Elizabeth Smyth, MD, of Oxford NIHR Biomedical Research Centre, Churchill Hospital, discusses three major studies presented at this year’s meeting: the antibody-drug conjugate izalontamab brengitecan in recurrent or metasatic esophageal squamous cell carcinoma (Abstract 4008); the ATTRACTION-6 study of chemoimmunotherapy in HER2-negative advanced gastric/gastroesophageal junction (GEJ) cancer (Abstract 4006); and an investigational EP4 antagonist in combination with chemoimmunotherapy as a first-line strategy for HER2-negative gastric/GEJ cancer (Abstract 4007).
The ASCO Post Staff
Samuel J. Klempner, MD, FASCO, of Mass General Brigham Cancer Institute, discusses a single-arm phase II study—which is currently open and enrolling (ClinicalTrials.gov identifier NCT07070466)—evaluating ivonescimab in combination with FOLFOX as front-line therapy in locally advanced, unresectable, or metastatic HER2-negative gastroesophageal adenocarcinoma (Abstract TPS4246).
The ASCO Post Staff
Yelena Y. Janjigian, MD, FASCO, of Memorial Sloan Kettering Cancer Center, discusses safety results for DESTINY-Gastric03 Part 2 (arms D and F) and Part 4. The trial evaluated first-line fam-trastuzumab deruxtecan-nxki–based regimens in advanced HER2-expressing gastric cancer, gastroesophageal adenocarcinoma, and esophageal carcinoma (Abstract 4002).
Suneel Kamath, MD, of Cleveland Clinic, discusses a study that found tissue tumor mutation burden (TMB) was a stronger predictor of immunotherapy outcomes than blood-based circulating tumor DNA testing, with high tissue TMB associated with a longer time to treatment failure (Abstract 2580).
The ASCO Post Staff
Mazyar Shadman, MD, of the University of Washington and Fred Hutchinson Cancer Center, describes the safety and efficacy results of the all-oral first-line combination regimen of sonrotoclax and zanubrutinib for patients with treatment-naive chronic lymphocytic leukemia/small lymphocytic lymphoma (CLL/SLL), as well as the doublet’s effect on measurable residual disease (Abstract 7043). He also discusses the phase III BGB-11417-304/CELESTIAL-TNCLL-2 trial; this ongoing study is evaluating sonrotoclax plus zanubrutinib vs venetoclax and acalabrutinib in treatment-naive patients with chronic lymphocytic leukemia (CLL) (Abstract TPS7099).
Joel W. Neal, MD, PhD, of Stanford Cancer Institute, discusses updated overall survival data from cohort C of the CHRYSALIS-2 trial, which looked at first-line amivantamab plus lazertinib in previously untreated patients with atypical EGFR-mutated advanced non–small cell lung cancer (NSCLC) (Abstract 8501).
