Analysis of TCGA datasets of BC patients12,13 using the GEPIA14 and UCSC Xena (http://xena.ucsc.edu/) web servers revealed that a subset of TFCP2L1 target genes, including BMP2, BMP4, BMP5, GATA6, and SOX17, was significantly downregulated in bladder tumors relative to normal urothelium (Supplementary Fig. 1a). Here, BMP4 is linked to breast cancer.