ArticleEClinicalMedicine2025
The prognostic value of peritoneal metastases in patients with gastric cancer: a nationwide population-based study.
Article in EClinicalMedicine, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.
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Who cites it
7 citing papers in PubMed.
- Long-term control of peritoneal metastases following claudin 18.2-targeted CAR T-Cell therapy in advanced gastric cancer.Journal of hematology & oncology · 2026Article
- Delayed phase dual-energy CT for early peritoneal metastasis prediction: imaging phenotypes and tumor-stroma correlates in upfront gastrectomy candidates.Abdominal radiology (New York) · 2026Article
- Construction of competing-risk nomograms and identification of optimal candidates for aggressive therapy in gastric cancer with peritoneal metastasis: a population-based study.Translational cancer research · 2026Article
- Clinical risk factors associated with poor prognosis in gastric cancer patients with peritoneal metastasis.Medicine · 2026Article
- Prognostic stratification in gastric cancer with peritoneal metastasis: tumor biology and diagnostic modality as a surrogate for disease burden.BMC cancer · 2026Article
- Research progress on immune tolerance mechanisms in liver metastatic tumors and the "Liver-metastasis-oriented shared-mechanism therapeutic strategy" approach.Medical review (2021) · 2026Review
- Solvent-based or nab-paclitaxel plus ramucirumab for pretreated gastric cancer with peritoneal dissemination and prespecified biomarker analysis (P-SELECT/WJOG10617G): a randomised phase 2 trial in Japan.EClinicalMedicine · 2026Article
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Authors and funding
16 authors.
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No grant is acknowledged in the PubMed record.
Abstract
Background: The peritoneum is a common metastatic site in gastric cancer. The prognosis of synchronous peritoneal metastases compared to other metastatic sites in gastric cancer remains understudied. This study aims to evaluate the impact of peritoneal metastases on survival in patients with metastatic gastric cancer. Methods: Patients with gastric cancer and synchronous metastases between 2015 and 2020 were identified from the nationwide Netherlands Cancer Registry. Patients were categorized based on the site of metastases. Median overall survival (OS) was calculated for each metastatic site group. Multivariable Cox regression analyses were performed to evaluate the association between patient, tumour, and treatment characteristics, including the impact of systemic therapy, on OS. Findings: A total of 4072 patients were included, of whom 1835 (45.1%) had peritoneal metastases. Of these, 58.1% had isolated peritoneal metastases. For patients with metastatic gastric cancer treated with systemic therapy, the median OS was 9.0 months (95% confidence interval (CI): 8.6-9.5), compared to 1.7 months (95% CI: 1.7-1.9) for treatment-naïve patients, who received only palliative care. The survival for patients with isolated peritoneal metastases (4.4 months, 95% CI: 4.0-4.8 months) was similar to those with isolated non-peritoneal metastases (4.6 months, 95% CI: 4.2-5.1 months, adjusted HR: 0.94, 95% CI: 0.86-1.03, p = 0.185). Systemic therapy was associated with comparable survival in patients with peritoneal metastases and those with metastases at other sites. Interpretation: This study demonstrates that there is no statistically significant difference in survival between patients with isolated peritoneal metastases and those with isolated non-peritoneal metastases in gastric cancer. Our findings emphasize the unique prognostic landscape for peritoneal metastases in gastric cancer, underscoring the need for disease-specific evaluations, rather than relying on assumptions derived from other cancer types. Funding: None.
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