Table 2. Published data on PD-L1 expression in penile squamous cell carcinoma.

Authors	N	PD-L1+ (%)	Antibody	Cut-off
Udager et al., 2016 (45)	37	23 (62.2)	clone 5H1	≥5%
Ottenhof et al., 2016 (46)	200	96 (48.0)	clone E1L3N (cell signaling)	≥1%
Cocks et al., 2016 (47)	53	21 (39.6)	clone E1L3N (cell signaling)	any extent