CEACAM5 and neoplasm: Among the tested subjects, single‐factor analysis revealed a significant correlation between miR‐1255b‐5p expression and tumor stage, perineural invasion (PNI), lymphovascular invasion (LVI), and the levels of carcinoembryonic antigen (CEA) and carbohydrate antigen 19–9 (CA 19‐9; P < 0.05).