BMP4 and urinary bladder neoplasm: 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).