AR and neoplasm: As shown in Figure 4A–4G and Table 4, the pooled ORs revealed that PD-L1 overexpression was more prevalent in PCa patients with advanced tumor stage (OR = 1.40, 95% CI = 1.13-1.75, p = 0.003), positive surgical margin (OR = 1.36, 95% CI = 1.03-1.78, p = 0.028), higher Gleason score (OR = 1.81, 95% CI = 1.35-2.42, p < 0.001) and AR positivity (OR = 2.20, 95% CI = 1.61-3.01, p < 0.001).