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Table 1 PD-1 and PD-L1 expression in triple-negative breast cancer

From: The association of genomic lesions and PD-1/PD-L1 expression in resected triple-negative breast cancers

IHC score

PD-1

PD-L1

Negative 0

0

3 (2)

Rare 1

9 (5)a

4 (2)

Low 2

17 (13)

15 (11)

Moderate 3

17 (12)

12 (9)

High 4

10 (8)

12 (7)

Very high 5

1 (1)

8 (8)

  1. aTreatment-naïve cases
  2. Abbreviation: IHC immunohistochemistry