Regarding specificity for association of K2p-expression with tumor vs. normal sample-type, we used the MEXPRESS web tool for visualizing expression, DNA methylation and clinical TCGA data [30], and found that KCNK9 (p = 2.58 × 10−9) and KCNK12 (p = 4.63 × 10−10) overexpression appeared to be associated with tumor type, while KCNK5 overexpression appeared to have marginal association (p = 0.0757). Here, KCNK9 is linked to neoplasm.