To further validate that FAK‐WT and FAK‐KD fibroblasts are activated into CAF‐like cells once co‐grafted with tumour cells, GFP‐expressing fibroblasts were co‐injected with non‐labelled tumour cells, and CAF markers α‐SMA, FAP‐α and PDGFR‐α evaluated. This evidence concerns the gene ACTA1 and neoplasm.