The IHC examination demonstrated additional strongly decreased abundance of INI1 protein in BC (p‐value = .0005, Figure 2a,b) further indicating the aberrations of SWI/SNF CRCs in this type of cancer; however, in some cases, the INI1 level was not changed or even increased in cancer cells compared with the corresponding healthy urothelium. Here, SMARCB1 is linked to cancer.