Based on the results of UALCAN and Kaplan-Meier analysis described above, KCNK1, KCNK2, KCNK7, KCNK9, KCNK10, KCNK13, KCNK15, and KCNK17 showed the greatest prognostic value for HCC among all the KCNKs examined. The gene discussed is KCNK7; the disease is hepatocellular carcinoma.