CTLA4 and urinary bladder carcinoma: [85] SLRs can also occur following antineoplastic treatment, including Bacillus Calmette-Guérin (BCG) for bladder cancer [86], anti-cytotoxic T-lymphocyte antigen 4 (CTLA4) [87], anti-programmed death-ligand 1 (PD-L 1) [88,89] and nivolumab [90].