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Ian Chau, MD, of The Royal Marsden Hospital, discusses reportedly the first study to evaluate the real-world effectiveness of nivolumab as a first-line treatment of advanced gastric, gastroesophageal junction, or esophageal adenocarcinoma. The combination therapy improved overall survival compared with chemotherapy alone. Dr. Chau presents the 18-month follow-up results (Abstract 295).
Yasunobu Ishizuka, MD, of Japan’s Aichi Cancer Center, discusses study results showing that scheduling infusions of nivolumab monotherapy before mid-afternoon for patients with metastatic gastric cancer may alter treatment efficacy. Several studies have suggested that circadian rhythm is essential in immune system function, including anticancer immunity (Abstract 268).
Lorraine A. Chantrill, PhD, MBBS, of Australia’s Wollongong Hospital, New South Wales, discusses phase II findings on the combination of nab-paclitaxel plus carboplatin as a first-line treatment for patients with gastrointestinal neuroendocrine carcinomas. According to Dr. Chantrill, this regimen appears to be active in these tumors and warrants further evaluation in a phase III trial (Abstract 589).
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).
Kohei Shitara, MD, of Japan’s National Cancer Center Hospital East, discusses the SPOTLIGHT study’s phase III findings on zolbetuximab plus mFOLFOX6 as first-line treatment for patients with the biomarker claudin-18.2–positive and HER2-negative locally advanced unresectable or metastatic gastric or gastroesophageal junction adenocarcinoma. The regimen seems to have led to an improvement in both progression-free and overall survival, with survival benefits also observed across most subgroups. Zolbetuximab plus mFOLFOX6 is potentially a new standard-of-care treatment for this population (Abstract LBA292).
Souya Nunobe, MD, PhD, of Japan’s Cancer Institute Hospital and the Japanese Foundation for Cancer Research, discusses 5-year follow-up results of the phase III OPAS-1 trial, which compared four and eight courses of S-1, a novel oral fluoropyrimidine derivative adjuvant chemotherapy for patients with stage II gastric cancer. These final follow-up findings confirmed the benefit of S-1 and its use for 1 year to treat this population (Abstract 381).
Filippo Pietrantonio, MD, of Italy’s Istituto Nazionale dei Tumori, discusses phase II results from the INFINITY trial of tremelimumab and durvalumab as neoadjuvant treatment of patients with microsatellite instability–high (MSI) resectable gastric or gastroesophageal junction adenocarcinoma (GAC/GEJAC). These results open the way to investigate nonoperative management in patients with clinical, pathologic, and molecular complete response after T300/D (300 mg of tremelimumab and 1,500 mg every 4 weeks of durvalumab) (Abstract 358).
Manik A. Amin, MD, of Dartmouth Cancer Center, discusses the future of immunotherapy in gastrointestinal cancers, the challenges of creating effective adoptive cell therapies, and the next generation of immune checkpoint inhibitors.
Gulam A. Manji, MD, PhD, of Columbia University Medical Center, discusses phase II results on perioperative combination chemotherapy and pembrolizumab in patients with resectable gastric cancer. The combination appeared to result in many complete pathologic responses (Abstract CT009).
Francesca Battaglin, MD, of USC Norris Comprehensive Cancer Center and the Keck School of Medicine, discusses findings from one of the largest studies to investigate recurrent neoantigens in upper gastrointestinal cancers. Dr. Battaglin and her team identified peptides with high human leukocyte antigen–binding affinity and an association with a positive tumor inflammation signature in both microsatellite-instable and microsite-stable tumors, suggesting a role for such antigens as potential cancer immunotherapy targets (Abstract 246).
Zev A. Wainberg, MD, of the University of California, Los Angeles, discusses an update, of 25 additional months, on phase III safety and efficacy results from the KEYNOTE-062 trial. This study compared pembrolizumab with or without chemotherapy vs chemotherapy alone for patients with PD-L1–positive advanced gastric or gastroesophageal junction adenocarcinoma (Abstract 243).
Yu Sunakawa, MD, PhD, of Japan’s St. Marianna University School of Medicine, discusses his findings from the DELIVER trial, which suggest the gut microbiome may predict skin toxicities in patients with advanced gastric cancer who are treated with nivolumab. In addition, some single nucleotide polymorphisms, such as NOTCH1, SEMA4D, NLRC5, and IL-6R genes, may potentially become markers for diarrhea and skin toxicities with this agent.
Kohei Shitara, MD, of Japan’s National Cancer Center Hospital East, discusses a long-term data follow-up from CheckMate 649, which support the continued use of nivolumab plus chemotherapy as first-line treatment in patients with advanced gastric, gastroesophageal junction, and esophageal adenocarcinomas (Abstract 240).
Vivek Subbiah, MD, of The University of Texas MD Anderson Cancer Center, discusses data on selpercatinib that showed promising activity across a variety of RET fusion–positive cancers, including treatment-refractory gastrointestinal malignancies. This analysis highlights the need for genomic profiling to identify actionable oncogenic drivers.
Crystal S. Denlinger, MD, of Fox Chase Cancer Center, and Mary F. Mulcahy, MD, of the Robert H. Lurie Comprehensive Cancer Center of Northwestern University, discuss biomarkers for determining treatment; immune checkpoint inhibitors; when to employ such treatments as platinum/fluoropyrimidine and fam-trastuzumab deruxtecan-nxki; and other second- or later-line therapies such as paclitaxel, ramucirumab, irinotecan-based regimens, and trifluridine/tipiracil.
Rutika Mehta, MD, MPH, of the H. Lee Moffitt Cancer Center and Research Institute, discusses the 3-year regression-free and overall survival results from the JACCRO study, which compared the efficacy of S-1, an oral prodrug of fluorouracil, vs S-1 plus docetaxel after curative resection of stage III gastric cancer (Abstract 159).
Afsaneh Barzi, MD, PhD, of the City of Hope Comprehensive Cancer Center and the University of Southern California, discusses reasons for the incomplete understanding of the molecular landscape of minority patients with cancer, lack of screening chief among them. This underrepresentation, Dr. Barzi says, is more marked in gastrointestinal malignancies than other solid tumors, and she recommends ways to improve the outlook.
Zev A. Wainberg, MD, of UCLA Medical Center, discusses phase II results from the FIGHT study, which combined bemarituzumab with modified FOLFOX6 in first-line treatment of advanced gastric/gastroesophageal junction adenocarcinoma. This is reportedly the first randomized trial of any FGFR inhibitor, validating this target in gastric cancer (Abstract 160).
Peter Reichardt, MD, PhD, of Helios Klinikum Berlin-Buch, discusses the 10-year survival analysis of 3 years vs 1 year of adjuvant imatinib for patients with high-risk gastrointestinal stromal tumor. The study found that about 50% of deaths can be avoided with longer imatinib treatment (Abstract 11503).
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).
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).
Josep Tabernero, MD, PhD, of the Vall d’Hebron Institute of Oncology, discusses phase III findings of the KEYNOTE-062 study showing that, for some patients with advanced gastric or gastroesophageal junction cancer, pembrolizumab may improve survival and may be an effective alternative to chemotherapy, with fewer side effects (Abstract LBA4007).
Rongbo Lin, MD, of Fujian Cancer Hospital, discusses phase II study findings on FOLFOX alone vs paclitaxel plus FOLFOX vs intraperitoneal paclitaxel plus FOLFOX as a first-line treatment in advanced gastric cancer (Abstract 6).
Manish A. Shah, MD, of NewYork–Presbyterian/Weill Cornell Medical Center, discusses phase III data on the efficacy and safety of andecaliximab combined with mFOLFOX6 as first-line treatment in patients with advanced gastric or gastroesophageal junction adenocarcinoma (Abstract 4).
David H. Ilson, MD, PhD, of Memorial Sloan Kettering Cancer Center, discusses findings on the efficacy and safety of third-line trifluridine/tipiracil in patients with metastatic gastric cancer with or without prior gastrectomy (Abstract 3).
Maria Svensson, MD, PhD Candidate, of Lund University, discusses high expression of PD-1 and PD-L1 in chemotherapy-naive esophageal and gastric adenocarcinomas, the implications for survival, and the link to a deficiency in mismatched repair genes (Abstract 9).
Manish A. Shah, MD, of Weill Cornell Medicine, discusses phase III study findings on cisplatin plus capecitabine or fluorouracil with or without ramucirumab as first-line therapy in patients with metastatic gastric or gastroesophageal junction adenocarcinoma (Abstract 5).
Florian Lordick, MD, of the University Medicine Leipzig, discusses study findings on intraperitoneal immunotherapy with the antibody catumaxomab for patients with peritoneal carcinomatosis from gastric cancer (Abstract 4).
Khaldoun Almhanna, MD, MPH, of the H. Lee Moffitt Cancer Center, discusses the long-term outcome of a phase III study that explored the significance of extensive intraoperative peritoneal lavage in addition to standard treatment for ≥ T3 resectable gastric cancer (Abstract 1).
Masanori Terashima, MD, PhD, of Shizuoka Cancer Center, discusses phase III study findings evaluating bursectomy for patients with subserosal/serosal gastric cancer (Abstract 5).
Salah-Eddin Al-Batran, MD, of the Institute of Clinical Cancer Research and Nordwest Hospital, discusses study findings on paclitaxel with and without RAD001 in patients with gastric cancer whose disease has progressed after therapy with a fluoropyrimidine/platinum-containing regimen (Abstract 4).
Martin H. Schuler, MD, of the University Hospital Essen, discusses in German findings from this phase II trial of epirubicin, oxaliplatin, and capecitabine with or without the antibody IMAB362 as first-line therapy in patients with advanced CLDN18.2+ disease. (Abstract 614O)
Yung-Jue Bang, MD, PhD, of Seoul National University Hospital, discusses phase III study findings on olaparib and paclitaxel in patients with advanced gastric cancer who have progressed following first-line therapy. (Abstract LBA25)
Martin H. Schuler, MD, of the University Hospital Essen, discusses findings from this phase II trial of epirubicin, oxaliplatin, and capecitabine with or without the antibody IMAB362 as first-line therapy in patients with advanced CLDN18.2+ disease. (Abstract 614O)
Marcel Verheij, PhD, of the Netherlands Cancer Institute, and John Marshall, MD, of Georgetown University Lombardi Comprehensive Cancer Center, discuss findings from this multicenter phase III study of neoadjuvant chemotherapy followed by either surgery and chemotherapy or surgery and chemoradiotherapy in resectable gastric cancer (Abstract 4000).
Salah-Eddin Al-Batran, MD, of the Institute of Clinical Cancer Research and Nordwest Hospital, discusses findings from this international phase II study of epirubicin, oxaliplatin, and capecitabine with or without IMAB362, as first-line treatment of gastric and gastroesophageal junction adenocarcinoma (Abstract LBA4001).