SLAMF8 and gastric cancer: However, the other six cytokines, including IFNGR1, TNFRSF19L, GHR, SLAMF8, FR‐beta, and integrin alpha 5 are reported to be elevated in gastric cancer for the first time in this study, suggesting that these proteins may be novel serum biomarkers for the early diagnosis and prognosis of gastric cancer.