EGFR and urinary bladder cancer: The expression of FAM83A, considered a potential biomarker in lung and bladder cancers as well as contributed to EGFR‐TKI resistance,[48, 49, 50] was activated in SKBR3_HR cells, accompanied by a significant loss of H3K27me3 but stable H3K4me3 signals at promoter regions (Figure S4c, Supporting Information).