Keywords included “bladder cancer”, “urothelial carcinoma”, “hydrogel”, “thermogel”, “mucoadhesive”, “intravesical”, “tissue engineering”, “scaffold”, “GelMA”, “decellularized matrix”, “epigenetic”, “DNA methylation”, “histone modification”, “EZH2”, “KDM6A”, “HDAC”, and “DNMT”, combined with Boolean operators. This evidence concerns the gene HDAC9 and urinary bladder carcinoma.