FGFR2 and gastric cancer: To date, several studies have reported on the protein expression of FGFR2 and clinicopathological analyses using immunohistochemistry, with 20 of 49 (41%) and 42 of 134 (31%) gastric cancers expressing FGFR2 protein when evaluated using positive or negative staining (Hattori et al, 1996; Toyokawa et al, 2009).