To verify the potential interplay between FGFR and EGFR, we first validated EGFR_T693 phosphorylation in T47D, BT20, HA‐FGFR2b‐BT549 and a breast cancer organoid grown from a TNBC patient‐derived xenograft (PDX) tumour (Eyre et␣al,2016). Here, EGFR is linked to breast cancer.