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PFS and OS after 12 months
| n | 12 months OS rate | 12 months PFS rate | |
|---|---|---|---|
| Total | 72 | 13 (18.06%) | 36 (50.00%) |
| PD-1 Negative | 39 | 10 (25.64%) | 25 (64.10%) |
| PD-1 Positive | 33 | 3 (9.09%) | 11 (33.33%) |
| χ2 | 3.309 | 6.769 | |
| P | 0.069 | 0.009 |
Note: PD-1 = Programmed death-1, OS = Overall Survival, PFS = Progression-free survival.
