PDCD1 and Pruritus: When compared with chemotherapy alone, RRs were 1.39 (95%CI 1.08-1.80, p = 0.01) (Figure 3A) and 1.51 (95%CI 1.25-1.83, p < 0.0001) (Figure 3B) for any grade pruritus and any grade rash developed after PD-1/-L1 inhibitor combined with chemotherapy.