Proteomic analysis of MDCKYBX1 tumour xenografts revealed 428 proteins identified in MDCKYBX1 tumour xenografts (Supplementary Figure S3, Supplementary Table S3), and EMT markers (VIM, FN1 and S100A4) and proteins involved in cancer progression (H-Ras and CLU) were identified. Here, FN1 is linked to cancer.