Delcourt et al. [7] investigated the association between early recurrence (the occurrence of refractory tumour as defined by International Bladder Cancer Group [IBCG] and American Society of Clinical Oncology Genitourinary Group [ASCO GU] definitions) and the PD-L1 expression in a large cohort of 186 patients with high-risk NMIBC. This evidence concerns the gene CD274 and neoplasm.