CD24 and neoplasm: The results of the meta-analysis showed CD24 expression was associated with tumor depth (OR = 0.45, 95% CI = 0.32–0.63; P<0.00001, Fig. 2C), status of lymph nodes (OR = 0.40, 95% CI = 0.25–0.64; P = 0.0001, Fig. 2D) and TNM stage (OR = 0.56, 95% CI = 0.41–0.77; P = 0.0003, Fig. 2E).