We evaluated the overall genetic alterations in all KCNA genes (KCNA1, KCNA2, KCNA3, KCNA4, KCNA5, KCNA6, KCNA7, KCNA10) using the TCGA Pan-Cancer Atlas dataset, collecting data from 32 human cancers (10,953 patients in total). The gene discussed is KCNA4; the disease is cancer.