
This discussion looks ahead at how the role of PD-1 inhibitors may continue to evolve in the treatment of esophageal squamous cell carcinoma (ESCC) and gastric or gastroesophageal junction (GEJ) cancers.

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This discussion looks ahead at how the role of PD-1 inhibitors may continue to evolve in the treatment of esophageal squamous cell carcinoma (ESCC) and gastric or gastroesophageal junction (GEJ) cancers.

This discussion provides a forward-looking discussion on how the role of PD-1 inhibitors may continue to evolve in the management of esophageal squamous cell carcinoma (ESCC) and gastric or gastroesophageal junction (GEJ) cancers.

This discussion highlights several emerging therapeutic approaches that are shaping future directions in advanced gastric and gastroesophageal junction (GEJ) cancers.

This discussion outlines several emerging therapeutic approaches currently under investigation for advanced gastric and gastroesophageal junction (GEJ) cancers.

This discussion reviews the dosing flexibility available for PD-1 inhibitors used in advanced gastric and gastroesophageal junction (GEJ) cancers.

This discussion reviews the dosing flexibility available for PD-1 inhibitors used in advanced gastric and gastroesophageal junction (GEJ) cancers.

This discussion reviews the key safety considerations for checkpoint inhibitors used in advanced esophageal squamous cell carcinoma (ESCC) and gastric or gastroesophageal junction (GEJ) cancers.

This discussion reviews key safety considerations for immune checkpoint inhibitors used in advanced esophageal squamous cell carcinoma (ESCC) and gastric or gastroesophageal junction (GEJ) cancers.

This discussion reviews the ongoing HERIZON-GEA-01 trial, a global, randomized Phase 3 study evaluating zanidatamab as a potential first-line treatment for HER2-positive gastric and gastroesophageal junction (GEJ) adenocarcinoma.

This discussion reviews the ongoing HERIZON-GEA-01 trial, a global Phase 3 study evaluating zanidatamab as part of first-line therapy for HER2-positive gastric and gastroesophageal junction (GEJ) adenocarcinoma.

This discussion summarizes the KEYNOTE-811 trial, which evaluated the addition of pembrolizumab to trastuzumab and platinum-based chemotherapy for patients with previously untreated, HER2-positive gastric or gastroesophageal junction (GEJ) adenocarcinoma.

This discussion reviews the KEYNOTE-811 trial, which evaluates the addition of pembrolizumab to trastuzumab and chemotherapy in the first-line treatment of HER2-positive gastric and gastroesophageal junction (GEJ) adenocarcinoma.

This discussion provides a focused overview of the RATIONALE-305 trial, which evaluated tislelizumab in combination with platinum-based chemotherapy as first-line treatment for patients with previously untreated, HER2-negative gastric or gastroesophageal junction (GEJ) adenocarcinoma.

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This discussion provides a focused summary of the RATIONALE-305 trial, which evaluated tislelizumab in combination with platinum-based chemotherapy as first-line treatment for patients with previously untreated, HER2-negative gastric or gastroesophageal junction (GEJ) adenocarcinoma. The discussion highlights the global, randomized design of the study and its key finding: adding tislelizumab to chemotherapy produced a statistically significant improvement in overall survival compared with chemotherapy alone. The benefit was observed in the intent-to-treat population and was greater in tumors expressing PD-L1 based on the trial’s predefined TAP scoring. Experts also note that the safety profile of the tislelizumab regimen was manageable and consistent with expectations for PD-1 inhibitors plus chemotherapy, with no new or unexpected toxicities reported. Overall, the segment underscores how the results of RATIONALE-305 support the role of tislelizumab-based therapy as an important emerging option in first-line treatment of advanced gastric or GEJ adenocarcinoma.

This discussion explores how tislelizumab’s unique Fc-region engineering may influence its activity in gastric cancer, particularly in patients with peritoneal metastases. Tislelizumab is designed to minimize binding to Fc-gamma receptors on macrophages, a modification intended to reduce macrophage-mediated clearance of activated T cells and help support a sustained anti-tumor immune response. This mechanism is scientifically relevant in the peritoneal cavity, where macrophages are abundant and can contribute to an immunosuppressive microenvironment. By limiting interaction with these cells, tislelizumab may offer a theoretical advantage in this difficult-to-treat subgroup. While this rationale is grounded in mechanistic biology, clinical validation is still needed to determine the extent of benefit in patients with peritoneal metastases. This segment highlights the scientific foundation behind tislelizumab’s design and its potential implications for addressing unmet needs in advanced gastric cancer.

This discussion provides a clear overview of current treatment standards and ongoing challenges in the management of advanced gastric cancer. The discussion outlines how first-line therapy is anchored in HER2 status: patients with HER2-positive tumors receive HER2-targeted therapy combined with chemotherapy, while those with HER2-negative disease are treated with a PD-1 inhibitor plus platinum-based chemotherapy. PD-L1 expression, often measured using the combined positive score (CPS), helps refine decisions regarding the use of immunotherapy, with higher CPS values generally associated with greater benefit. The segment emphasizes the importance of obtaining HER2 and PD-L1 results early through comprehensive molecular profiling to guide individualized treatment selection. It also addresses one of the most difficult clinical issues in gastric cancer, peritoneal metastases, which are common, frequently hard to detect with imaging, and associated with poor outcomes. These factors highlight the complexity of caring for this population despite improvements in systemic therapy.

This discussion provides an overview of current treatment standards and practical challenges in managing advanced gastric cancer. The discussion emphasizes that platinum–fluoropyrimidine doublet chemotherapy remains a widely used first-line backbone because it offers an effective balance of efficacy and tolerability. Experts also address ongoing debate around taxane-containing triplet regimens, noting that while certain regional studies have evaluated them, concerns about added toxicity and inconsistent benefit have limited their routine use in many practices. The segment highlights the importance of tailoring treatment to individual patient factors, including performance status, comorbidities, prior therapies, and patterns of spread such as peritoneal involvement or positive peritoneal cytology. It also reinforces that upfront surgery is generally not appropriate in stage IV disease and stresses the need for thorough staging and multidisciplinary coordination. Overall, this segment provides practical insights into evidence-based and individualized decision-making in advanced gastric cancer care.

This discussion offers a focused examination of tislelizumab’s mechanism of action and the clinical data supporting its use in advanced esophageal squamous cell carcinoma (ESCC). Tislelizumab is distinguished by Fc-region engineering that minimizes binding to Fcγ receptors on macrophages, a feature intended to reduce the phagocytosis of activated T cells and help maintain a more sustained anti-tumor immune response. The segment then reviews the results of the global Phase 3 RATIONALE-306 trial, in which adding tislelizumab to platinum-based chemotherapy produced a statistically significant overall survival improvement compared with chemotherapy alone. The benefit was more pronounced in tumors expressing PD-L1, and survival advantages were observed across multiple clinically relevant subgroups. Safety findings were consistent with known profiles of PD-1 inhibitors, with no new or unexpected toxicities reported. Taken together, these mechanistic and clinical insights illustrate how tislelizumab has emerged as an important first-line immunotherapy option for patients with advanced ESCC.