of borderline significanceP = 0.07
PD-1 blockade was effective in the CPS <10 population ( P value for pooled OS HR, PFS HR and response OR are all 0.01), while in the CPS <5 population the effect was of borderline significance for OS ( P = 0.07) and significant for PFS and ORR ( P = 0.02 and 0.03, respectively).