AFP and hepatocellular carcinoma: AUROC of AFP for HCC diagnosis was 0.704, whereas those of serum exo‐miR‐25‐3p, exo‐miR‐1269a, exo‐miR‐4661‐5p, and exo‐miR‐4746‐5p were 0.758, 0.848, 0.917, and 0.660, respectively.