CEACAM1 and neoplasm: The results showed that ERBB2, IFNG, RB1, GZMB, ICOS, CEACAM1, ICOSLG, EPHA2, CD2, SELL, CD38, IFNB1, ANXA2, TAP1, CXCL9, SLC9A1, and SLAMF7 were highly expressed in tumor tissues.