H19 and hepatocellular carcinoma: We found that the overexpression of miR‐520a‐3p in MHCC97‐H and HCCLM3 cells reversed the effects of the addition of Over H19‐Propofol‐Huh7‐exo, and these findings demonstrated that exosomal H19 exerted its oncogenic role in HCC cells through sponging miR‐520a‐3p.