FOXC1 and bladder transitional cell carcinoma: For the knockdown, we used three different shRNAs (shFOXC1-1, shFOXC1-2, and shFOXC1-3) targeting two BLCA cell lines, namely, 253J and 5637, with the highest FOXC1 expression (Supplementary Figures 1(b) and 1(c)).