KCNQ1OT1 has been shown to mediate the growth of hepatocellular carcinoma by functioning as a ceRNA of miR-504 [24] and also to regulate proliferation and cisplatin resistance in tongue cancer via miR-211-5p-mediated Ezrin/Fak/Src signaling [25]. The gene discussed is PTK2; the disease is hepatocellular carcinoma.