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language
eng
Author
Uchida, Yuki Department of Digestive and General Surgery, Faculty of Medicine, Shimane University Faculty of Medicine, 89-1 Enya-cho, Izumo, Shimane, 693-8501, Japan
Description
Background
The systemic immune-inflammation index (SII), integrated by peripheral lymphocyte, neutrophil, and platelet counts, is used as an objective biomarker that reflects the balance between host inflammatory and immune response status in cancer patients. Herein, we examined the prognostic significance of SII in gastric cancer patients.

Methods
We retrospectively reviewed data of 415 patients who underwent curative laparoscopic gastrectomy using propensity score–matched (PSM) analysis. The prognostic value of SII was compared between two groups based on SII values: low SII group (SII < 661.9) and high SII group (SII ≥ 661.9).

Results
In multivariate analysis, the American Society of Anesthesiologists physical status (ASA-PS) (p < 0.001), tumor differentiation (p = 0.019), pathological stage (p = 0.046), carcinoembryonic antigen (CEA) level (p < 0.001), SII (p = 0.006), and operative procedure (p = 0.009) were independent prognostic factors of overall survival (OS) in the overall PSM cohort. The log-rank test demonstrated that patients with a high SII had significantly worse OS than did those with low SII (p = 0.002). In age-stratified subgroups analysis (< 65/≥ 65 years), multivariate analysis revealed that ASA-PS (p < 0.001), tumor differentiation (p = 0.019), CEA level (p = 0.008), SII (p = 0.013), and operative procedure (p = 0.026) were independent prognostic factors of OS in the elderly group. Similarly, elderly patients with a high SII had significantly worse OS than did those with a low SII (p = 0.009). Meanwhile, SII was not an independent prognostic factor of OS, and no significant association was observed between SII and OS in non-elderly patients.

Conclusions
SII was an independent prognostic indicator in gastric cancer patients, especially in the elderly population.
Subject
Gastric cancer
Systemic immune-inflammation index
Overall survival
Journal Title
Journal of Gastrointestinal Surgery
Volume
25
Start Page
1124
End Page
1133
ISSN
1091-255X
ISSN(Online)
1873-4626
Published Date
2020-06-30
DOI
Publisher
Society for Surgery of the Alimentary Tract
NII Type
Journal Article
Format
PDF
Text Version
著者版
Gyoseki ID
39881
OAI-PMH Set
Faculty of Medicine
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