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GeneralAdvanced/Metastatic (IV)2026

Intraperitoneal and Intravenous Paclitaxel Plus S-1 for Gastric Cancer With Peritoneal Metastasis: A Phase 3 Randomized Clinical Trial.

Yan C et al. JAMA Oncol. 2026

HER2-positiveAdvanced/Metastatic (IV)2026

Gastric cancer: French intergroup clinical practice guidelines for diagnosis, staging, treatment and follow-up (TNCD, SNFGE, FFCD, UNICANCER, GERCOR, SFCD, SFED, AFEF, SFRO, SFP, SFR, ACHBPT, RENAPE, SNFCP).

Zaanan A et al. Eur J Cancer. 2026

Claudin 18.2+All Stages2026

Chemotherapy-induced cell cycle arrest is associated with increased claudin-18 isoform 2 expression and enhanced zolbetuximab-mediated cytotoxicity in gastric cancer.

Takiguchi C et al. J Gastroenterol. 2026

GeneralResectable (I-III)2026

Survival Benefit of Adjuvant S-1 Chemotherapy in Patients Aged ≥ 80 Years with Gastric Cancer after Curative Resection: A Multicenter Cohort Study.

Sumiyoshi S et al. Ann Surg Oncol. 2026

Claudin 18.2+Advanced/Metastatic (IV)2026

Zolbetuximab plus chemotherapy in Japanese patients with claudin 18.2-positive gastric or gastroesophageal junction adenocarcinoma: a combined subgroup analysis of the phase 3 SPOTLIGHT and GLOW trials.

Yamaguchi K et al. Gastric Cancer. 2026

GeneralAdvanced/Metastatic (IV)2026

Efficacy and safety of fruquintinib combined with albumin-bound paclitaxel as second-line therapy for advanced gastric cancer following failure of PD-1 inhibitor-containing treatment (TACTIC GC-01): A phase II single-arm study.

Ma X et al. Int J Cancer. 2026

PD-L1 positiveAll Stages2026

Perioperative Toripalimab Plus Chemotherapy Versus Chemotherapy Alone in Locally Advanced Gastric or Gastroesophageal Junction Cancer: 3-Year Follow-Up of NEOSUMMIT-01 Trial.

Nie RC et al. J Clin Oncol. 2026

HER2-positiveAll Stages2026

Trastuzumab Rezetecan in Human Epidermal Growth Factor Receptor 2-Expressing Advanced Gastric Cancer or Gastroesophageal Junction Adenocarcinoma and Colorectal Cancer: A Multicenter, Open-Label, Phase I Trial.

Liu T et al. J Clin Oncol. 2026

HER2-positiveAll Stages2026

Antibody-drug conjugates in gastric cancer: clinical advances and resistance mechanisms.

Li W et al. Gastric Cancer. 2026

PD-L1 positiveAdvanced/Metastatic (IV)2026

Association between the presence of malignant ascites and survival outcomes in gastric cancer patients treated with nivolumab plus chemotherapy.

Lee Y et al. Int J Cancer. 2026

PD-L1 positiveAdvanced/Metastatic (IV)2026

Prognostic implications of tissue-based homologous recombination deficiency in metastatic gastric cancer treated with immune checkpoint inhibitor plus chemotherapy.

Kim C et al. Gastric Cancer. 2026

GeneralAll Stages2026

Surrogate endpoints for survival in KEYNOTE-585: neoadjuvant/adjuvant pembrolizumab plus chemotherapy versus placebo plus chemotherapy for gastric or gastroesophageal junction adenocarcinoma.

Shitara K et al. ESMO Open. 2026

GeneralAdvanced/Metastatic (IV)2026

Efficacy and safety of irinotecan-based therapy in elderly patients with advanced gastric cancer receiving third-line or later chemotherapy: post-hoc age-subgroup analysis of the rindberg trial.

Kawabata R et al. Gastric Cancer. 2026

GeneralResectable (I-III)2026

Neoadjuvant chemotherapy with docetaxel, oxaliplatin, and S-1 versus oxaliplatin and S-1 for locally advanced gastric adenocarcinoma: A multicenter, real-world cohort study.

Jin P et al. Int J Cancer. 2026

GeneralAll Stages2026

Preoperative chemotherapy with docetaxel, oxaliplatin, and S-1 for gastric cancer with extensive lymph node metastasis: 3-year follow-up results from JCOG1704.

Kurokawa Y et al. Gastric Cancer. 2026

PD-L1 positiveAdvanced/Metastatic (IV)2026

Nivolumab plus chemotherapy as first-line treatment for advanced gastric, gastroesophageal junction, and esophageal adenocarcinoma: 5-year follow-up results from CheckMate 649.

Janjigian YY et al. Ann Oncol. 2026

GeneralAdvanced/Metastatic (IV)2026

A phase II trial of ramucirumab and docetaxel as second-line treatment for patients with advanced gastric cancer (HGCSG 1903).

Kawamoto Y et al. Gastric Cancer. 2026

GeneralAll Stages2026

Long-term survival outcomes from a phase II trial of perioperative capecitabine plus oxaliplatin for advanced gastric cancer with extensive lymph node metastases: OGSG 1701.

Endo S et al. Gastric Cancer. 2026

GeneralResectable (I-III)2026

A phase II study of neoadjuvant chemotherapy with docetaxel, cisplatin, and S-1 followed by gastrectomy for type 4 or large type 3 gastric cancer (OGSG 1402).

Tanaka R et al. Gastric Cancer. 2026

GeneralResectable (I-III)2026

Neoadjuvant docetaxel, oxaliplatin, and S-1 therapy for patients with large type 3 or type 4 gastric cancer: final outcomes of a multicenter, phase II study (OGSG 1902).

Endo S et al. Gastric Cancer. 2026

HER2-positiveAdvanced/Metastatic (IV)2026

Phase Ib/II Study of Zanidatamab in Combination with Tislelizumab and Chemotherapy in First-Line HER2-Positive Gastric/Gastroesophageal Junction Adenocarcinoma.

Lee KW et al. Clin Cancer Res. 2026

GeneralAdvanced/Metastatic (IV)2026

Plasma PlGF as a Potential Biomarker in Ramucirumab-Based Second-Line Therapy for Advanced Gastroesophageal Adenocarcinoma: Exploratory Biomarker Analysis from the Phase II Part of the RAMIRIS Trial.

Hille J et al. Int J Cancer. 2026

GeneralResectable (I-III)2026

A phase I/II clinical trial of neoadjuvant docetaxel/oxaliplatin/S‑1 (DOS) combination therapy for gastroesophageal junction adenocarcinoma.

Kumagai K et al. J Gastroenterol. 2026

HER2-positiveAdvanced/Metastatic (IV)2026

Zanidatamab with and without Tislelizumab in HER2-Positive Gastroesophageal Cancer.

Shitara K et al. N Engl J Med. 2026

HER2-positiveAdvanced/Metastatic (IV)2026

Treatment outcomes of trastuzumab-based chemotherapy in patients with HER2-positive gastric cancer: A nationwide retrospective cohort study.

Kim TH et al. Oncologist. 2026

MSI-H/dMMRAdvanced/Metastatic (IV)2026

Clinicopathologic characteristics and genomic profiling of HER2-low advanced gastric or gastroesophageal junction cancer.

Lee CK et al. ESMO Open. 2026

HER2-positiveAdvanced/Metastatic (IV)2026

Clinical impact of intratumoral HER2 heterogeneity on trastuzumab deruxtecan efficacy in patients with HER2-positive gastric cancer.

Yoshino K et al. Gastric Cancer. 2026

HER2-positiveAll Stages2026

Anbenitamab in previously treated HER2-positive gastric cancer (KC-WISE): prespecified interim analysis of a randomized, phase III clinical trial.

Liu R et al. Ann Oncol. 2026

HER2-positiveAll Stages2026

Spatial profiling of patient-matched HER2 positive gastric cancer reveals resistance mechanisms to targeted therapy.

Sheng T et al. Gut. 2026

GeneralResectable (I-III)2026

Does perioperative FLOT increase cure rates in resectable esophageal adenocarcinoma? A mixture cure model analysis.

Mateos L et al. Br J Cancer. 2026

GeneralAll Stages2026

Perioperative treatment in resectable gastric cancer with spartalizumab in combination with fluorouracil, leucovorin, oxaliplatin and docetaxel (FLOT): Results from the GASPAR phase 2 study.

Dos Santos M et al. Eur J Cancer. 2026

FGFR2+Advanced/Metastatic (IV)2026

Global prevalence of FGFR2b protein overexpression in advanced gastric cancer and gastroesophageal junction cancers: pooled analysis of two bemarituzumab phase III studies.

Maron SB et al. ESMO Open. 2026

HER2-positiveAdvanced/Metastatic (IV)2026

FDA Approval Summary: Pembrolizumab for the Treatment of HER2-Positive Gastric Cancer.

Casak SJ et al. Clin Cancer Res. 2026

PD-L1 positiveAdvanced/Metastatic (IV)2026

EP4 Antagonist ONO-4578 Plus Nivolumab and Chemotherapy in HER2-Negative Unresectable Advanced or Recurrent Gastric or Gastroesophageal Junction Cancer.

Nakayama I et al. J Clin Oncol. 2026

PD-L1 positiveAdvanced/Metastatic (IV)2026

First-line zolbetuximab plus mFOLFOX6 and nivolumab in unresectable CLDN18.2-positive gastric or gastroesophageal junction adenocarcinoma: a phase 2 trial.

Shitara K et al. Nat Med. 2026

GeneralAdvanced/Metastatic (IV)2026

Relative telomere length and senescence-associated inflammatory cytokines as blood-based prognostic markers in patients with advanced or resectable gastro-oesophageal adenocarcinoma.

Bilsland AE et al. Br J Cancer. 2026

HER2-positiveAdvanced/Metastatic (IV)2026

Immunotherapy and Targeted Therapy for Advanced Gastroesophageal Cancer: ASCO Guideline Update.

Shah MA et al. J Clin Oncol. 2026

GeneralResectable (I-III)2026

Prognostic impact of pathological complete response and response-adapted outcomes in patients with gastroesophageal adenocarcinoma treated with neoadjuvant or perioperative treatments: a multicentric cohort study.

Airoldi M et al. ESMO Open. 2026

HER2-positiveAll Stages2025

YAP as a therapeutic target to reverse trastuzumab resistance.

Nam AR et al. Gastric Cancer. 2025

GeneralAdvanced/Metastatic (IV)2025

Ramucirumab-containing chemotherapy for patients with gastrointestinal neuroendocrine carcinoma refractory/intolerant to platinum-based chemotherapy: A multicenter observational retrospective study (WJOG13420G).

Matsubara Y et al. Int J Cancer. 2025

MSI-H/dMMRAdvanced/Metastatic (IV)2025

Prevalence and clinicopathological features of microsatellite instability-high metastatic or recurrent gastric and esophagogastric junction cancer: WJOG13320GPS.

Komori A et al. Gastric Cancer. 2025

Claudin 18.2+Advanced/Metastatic (IV)2025

Retrospective analysis of Claudin18.2 expression in ethnically diverse patients with gastroesophageal adenocarcinoma.

Wallam S et al. J Gastrointest Oncol. 2025

PD-L1 positiveAdvanced/Metastatic (IV)2025

Q-TWiST analysis of first-line nivolumab plus chemotherapy versus chemotherapy in patients with advanced gastric cancer, gastroesophageal junction cancer, or esophageal adenocarcinoma from CheckMate 649: 4-year follow-up results.

Lin D et al. Gastric Cancer. 2025

GeneralResectable (I-III)2025

Predictors of tolerability for postoperative adjuvant S1 plus docetaxel chemotherapy for gastric cancer: a multicenter retrospective study.

Toyota K et al. Gastric Cancer. 2025

GeneralAll Stages2025

TFOX versus FOLFOX in first-line treatment of patients with advanced HER2-negative gastric or gastro-oesophageal junction adenocarcinoma (PRODIGE 51- FFCD-GASTFOX): an open-label, multicentre, randomised, phase 3 trial.

Zaanan A et al. Lancet Oncol. 2025

GeneralAll Stages2025

Impact of perioperative fluorouracil, leucovorin, oxaliplatin, and docetaxel delivery on postoperative survival in locally advanced oesophagogastric adenocarcinoma.

Sugiyama K et al. Gastric Cancer. 2025

Claudin 18.2+Advanced/Metastatic (IV)2025

Zolbetuximab-related gastritis: a case report of the patient with prolonged gastrointestinal symptoms.

Sugiyama Y et al. Gastric Cancer. 2025

HER2-positiveAdvanced/Metastatic (IV)2025

Trastuzumab Deruxtecan or Ramucirumab plus Paclitaxel in Gastric Cancer.

Shitara K et al. N Engl J Med. 2025

Claudin 18.2+Advanced/Metastatic (IV)2025

Expression of Claudin18.2 in metastatic lesions in peritoneum of gastric cancer.

Saito A et al. J Gastrointest Oncol. 2025

Claudin 18.2+All Stages2025

Navigating the clinical challenges of zolbetuximab in patients with claudin positive advanced gastric cancer.

Rosanu NM et al. Eur J Cancer. 2025