Regarding the correlation between KCNB1 and KCNA5 mRNA fold expressions in the studied groups, KCNB1 mRNA fold expression had a positive significant correlation with KCNA5 mRNA fold expression in tumour and peritumoral tissues (r = 0.63; p = 0.00002) (Fig. 1d). The gene discussed is KCNB1; the disease is neoplasm.