Table 1. Comparison of PD-L1 status between four assays using various cut-offs.
assays/cut-offs | Numbers of positive cases (%) | ||||
---|---|---|---|---|---|
≥1% | ≥5% | ≥10% | ≥25% | ≥50% | |
22C3 | 34/97 (35%) | 28/97 (29%) | 26/97 (27%) | 15/97 (15%) | 12/97 (12%) |
SP263 | 33/97 (34%) | 26/97 (27%) | 19/97 (19%) | 11/97 (11%) | 4/97 (4%) |
SP142 | 16/97 (16%) | 6/97 (6%) | 3/97 (3%) | 1/97 (1%) | 0 |
E1L3N | 23/97 (24%) | 17/97 (18%) | 13/97 (13%) | 8/97 (8%) | 4/97 (4%) |