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Prognostic effect of PD-L1 level in the TMA cohort and the impact of tissue quality. a RFS in PTEN-qualified samples, HR 0.55, 95% CI [0.32, 0.93], p = 0.024. b OS in PTEN-qualified samples, HR 0.58, 95% CI [0.33, 1.02], p = 0.056. c RFS in PTEN-disqualified samples, HR 0.75, 95% CI [0.4, 1.4], p = 0.36. d OS in PTEN-disqualified samples, HR 0.81, 95% CI [0.42, 1.56], p = 0.53
