Survival outcomes of management in metastatic gastric adenocarcinoma patients

Huang Ming Hu, Hui Jen Tsai, Hsiu Ying Ku, Su Shun Lo, Yan Shen Shan, Hung Chi Chang, Yee Chao, Jen Shi Chen, Shu Chen Chen, Chun Ju Chiang, Anna Fen Yau Li, Hsiu Po Wang, Tsang En Wang, Li Yuan Bai, Ming Shiang Wu, Li Tzong Chen, Tsang Wu Liu, Yi Hsin Yang*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations


Chemotherapy is generally considered as the main treatment for metastatic gastric adenocarcinoma. The role of gastrectomy for metastatic gastric cancer without obvious symptoms is controversial. The objective of this study is to investigate survival outcomes of treatment modalities using a real-world data setting. A retrospective cohort study was designed using the Taiwan Cancer Registry database. We identified the treatment modalities and used Kaplan–Meier estimates and Cox regressions to compare patient survival outcomes. From 2008 to 2015, 5599 gastric adenocarcinoma patients were diagnosed with metastatic disease (M1). The median overall survival (OS) of patients with surgery plus chemotherapy had the longest survival of 14.2 months. The median OS of the patients who received chemotherapy alone or surgery alone was 7.0 and 3.9, respectively. Age at diagnosis, year of diagnosis, tumor grade, and treatment modalities are prognostic factors for survival. The hazard ratios for patients who received surgery plus chemotherapy, surgery alone, and supportive care were 0.47 (95% CI 0.44–0.51), 1.22 (95% CI 1.1–1.36), and 3.23 (95% CI 3.01–3.46), respectively, by multivariable Cox regression analysis when using chemotherapy alone as a referent. Chemotherapy plus surgery may have a survival benefit for some selected gastric adenocarcinoma patients with metastatic disease.

Original languageEnglish
Article number23142
JournalScientific reports
Issue number1
StatePublished - Dec 2021


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