In the course of our research, reports demonstrated that lncRNA CASC2 sponges miR-21 in oral squamous cell carcinoma and in the modulation of sensitizes cervical cancer to cisplatin, and lncRNA FTX can also negatively control miR-21-5p during status epilepticus [36–38]. This evidence concerns the gene CASC2 and oral cavity squamous cell carcinoma.