Van K. Morris, MD, on Colon Cancer: ctDNA as a Predictive Biomarker
2024 ASCO GI Cancers Symposium
Van K. Morris, MD, of The University of Texas MD Anderson Cancer Center, discusses phase II results on using circulating tumor DNA (ctDNA) as a predictive biomarker of adjuvant chemotherapy in patients with stage II colon cancer. During the trial, no improvement in ctDNA clearance was observed after 6 months of chemotherapy following resection of disease. Dr. Morris notes that future trials should account for evolving assay performance in patients with colorectal cancer (Abstract 5).
The ASCO Post Staff
Dominik P. Modest, MD, of Charité-Universitätsmedizin Berlin, discusses phase III study findings showing sotorasib plus panitumumab vs trifluridine/tipiracil or regorafenib benefits patients with chemorefractory metastatic colorectal cancer in terms of improved clinical outcomes and better self-reported quality of life (Abstract 10).
The ASCO Post Staff
Anant Ramaswamy, DM, of Tata Memorial Centre, discusses phase III results of a study that added docetaxel to a doublet regimen of fluorouracil or capecitabine and oxaliplatin, which did not improve overall survival in patients with advanced gastroesophageal junction and gastric cancers. Continuing chemotherapy beyond 6 months also did not appear to improve survival in this population (Abstract LBA248).
The ASCO Post Staff
Frank Kullmann, MD, of Germany’s Klinikum Weiden, discusses results from the ALPACA trial, which suggest a dose-reduced regimen with alternating cycles of gemcitabine/nab-paclitaxel and gemcitabine monotherapy after three induction cycles of standard gemcitabine/nab-paclitaxel is feasible and associated with an overall survival comparable to that with standard treatment, as well as improved tolerability (Abstract 605).
The ASCO Post Staff
Manish A. Shah, MD, of Weill Cornell Medical College, discusses phase III findings of the KEYNOTE-590 study, which shows that, after 5 years, the use of pembrolizumab plus chemotherapy improved survival with durable efficacy, compared with placebo plus chemotherapy, in patients with untreated advanced esophageal cancer (Abstract 250).
The ASCO Post Staff
Michael K. Gibson, MD, PhD, of Vanderbilt University Medical Center, discusses phase III findings on chemotherapy plus camrelizumab in the ESCORT-NEO trial of patients with resectable esophageal squamous cell carcinoma; and phase III SKYSCRAPER-08 results on first-line tiragolumab plus atezolizumab and chemotherapy in the same patient population (Abstracts LBA244 and 245).
