Figure 6. Prognostic value of KCNK2, KCNK9, KCNK15, and KCNK17 mRNA levels in HCC patients. Increased KCNK2, KCNK15, and KCNK17 mRNA levels correlated with favorable OS of HCC patients (B, D, F). KCNK9 mRNA levels showed no correlation with HCC patient prognosis (C). Mean KCNK2/9/15/17 levels showed prognostic value in patients with HCC, with higher levels suggesting better prognosis (A).