Table 1.

Overview of PD-1 and PD-L1 expression in various types of solid tumors

Tumor types (n = 437 total)PD-1 expression (% and range)PD-L1 (tumor cells; %)Concurrent PD-1 and PD-L1 expression (%)
Carcinomas (n = 380 total)
 Breast (n = 116)51% (1–20)45%29%
 Colon (n = 87)50% (1–>20)21%12%
 NSCLC (n = 44)75% (1–20)50%43%
 Pancreas (n = 23)43% (1–16)23%9%
 Prostate (n = 20)35% (1–6)25%5%
 Merkel cell carcinoma (n = 19)17% (1–4)0%0%
 Endometrium (n = 16)86% (1–13)88%79%
 Ovary (n = 14)93% (1–16)43%36%
 Liver (n = 13)38% (1–5)8%0%
 Bladder (n = 11)73% (1–10)55%55%
 Kidney (n = 11)36% (1–3)67%33%
 CUP (n = 6)50% (1–4)33%33%
Sarcomas (n = 33 total)30% (1–>10)97%30%
Melanoma (n = 24 total)58% (1–15)92%58%