COL8A1 and urinary bladder cancer: Among the main repressed genes in bladder cancer, there are fatty acid binding protein 4 (FABP4) and fibroblast growth factor binding protein 1 (HBP17), RGS4, tissue inhibitor of metalloproteinase 3 (TIMP3), WNT5b, URB, and collagen type VIII, alpha 1 (COL8A1) [163].