RAP1A and neoplasm: No significant correlation was found between RAP1A expression and other clinicopathological parameters including gender (p = 0.844), age (p = 0.084), tumor location (p = 0.392), tumor size (p = 0.951), tumor differentiation (p = 0.628), lymph node metastasis (p = 0.620) and preoperative CEA level (p = 0.290).