The mRNA level of KIF1C is significantly reduced in human prostate cancer cells, bladder cancer cells, liver cancer cells, and melanoma cells according to the single-cell sequencing database scRNASeqDB (https://bioinfo.uth.edu/scrnaseqdb/) (GSE38495) (Supplementary Fig. 3e). This evidence concerns the gene KIF1C and urinary bladder carcinoma.