To further detect the effect of miR-30a-5p which was a target of NORAD on the development of PC cells, we predicted the downstream targets of miR-30a-5p by online bioinformatic tool and found that miR-30a-5p could bind to the 3′-UTR of RAB11A (Fig. 5a). This evidence concerns the gene RAB11A and pachyonychia congenita.