For instance, lncRNA KCNQ1OT1/CD155 axis facilitates antitumor immune response by regulating T-cell depletion status in colorectal cancer; and lncRNA KCNQ1OT1 level is an indicator of patients' prognoses by reflecting the immune status of tumor tissue [10]. The gene discussed is KCNQ1OT1; the disease is neoplasm.