Table 1: Grading of PD-L1 expression in tumor cells in our institution.
G1 |
< 1% positive staining viable tumor cells with both complete and incomplete membranous staining at any intensity level |
G2 |
> or = 1-25% positive staining viable tumor cells with both complete and incomplete membranous staining at any intensity level |
G3 |
> or = 25-50% positive staining viable tumor cells with both complete and incomplete membranous staining at any intensity level |
G4 |
> or = 50-75% positive staining viable tumor cells with both complete and incomplete membranous staining at any intensity level |
G5 |
> 75% positive staining viable tumor cells with both complete and incomplete membranous staining at any intensity level |