Abstract
Fibroblast growth factor receptor-2 (FGFR2) gene is amplified in up to 15% of patients with gastric cancer (GC). However, the prognostic significance of FGFR2 amplification has been controversial. This meta-analysis was conducted to evaluate the clinicopathological impacts of FGFR2 amplification in patients with GC. We performed a systematic computerized search of the electronic databases of PubMed, PMC, EMBASE, Web of Science, and Google Scholar and selected studies assessing the correlation of FGFR2 amplification with pathologic features and/or prognosis in gastric adenocarcinoma. From eight studies, 2,377 patients were included in the pooled analysis of odds ratios (ORs) with 95% confidence intervals (CIs) for pathologic findings and hazard ratios (HRs) with 95% CIs for overall survival. FGFR2 amplification was significantly associated with LN metastasis (OR = 3.93, 95% CI: 2.22-6.96, p < 0.00001) and poorly differentiated adenocarcinoma (OR = 2.36, 95% CI: 1.03-5.39, p = 0.04). In addition, patients with GC harboring FGFR2 amplification showed significantly worse survival (HR = 2.09, 95% CI: 1.68-2.59, p < 0.00001), compared with patients with FGFR2-unamplified GC. In conclusion, this meta-analysis indicates that FGFR2 amplification is an adverse prognostic factor in patients with GC.
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