Key clinical point: Epstein-Barr virus (EBV) and Helicobacter pylori coinfection is not an independent prognostic factor for gastric cancer. EBV infection was associated with survival, but not in patients with non-gastric carcinoma with lymphoid stroma (non-GCLS).
Major finding: EBV infection alone (hazard ratio 0.362; P = .049) showed an inverse correlation with overall survival (OS). The 5-year OS rate was not significantly different between the EBV and H. pylori coinfection vs. other groups (97.6% vs. 86.8%; P = .144). In patients with non-GCLS, the OS rate was not significantly different between the EBV-positive vs. other groups (96.9% vs. 86.4%; P = .126).
Study details: This retrospective study included 956 patients with gastric cancer who underwent surgery between September 2014 and August 2015 and were subdivided into groups according to the GCLS morphology and EBV and H. pylori infection statuses.
Disclosures: No funding source was identified for this study. Dr. JY Ahn is an editorial board member of the journal. The other authors reported no conflicts of interest.
Source: Noh JH et al. Clinical significance of Epstein-Barr virus and Helicobacter pylori infection in gastric carcinoma. Gut Liver. 2022 (May 25). Doi: 10.5009/gnl210593