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Table 2 Positivity on IHC in 3 subtypes of human sarcoma tissues

From: Status of programmed death-ligand 1 expression in sarcomas

  22C3 SP263 SP142
Expression level Expression level Expression level
N/A Negative Low High Positivity N/A Negative Low High Positivity N/A Negative Low High Positivity
Whole DDLPS (N = 32)   25 4 3 7/32 (21.9%) Not tested
Osteosarcoma (N = 31)   30   1 1/31 (3.2%) Not tested
TMA DDLPS (N = 33) 5 28    0/28 (0%) Not tested 4 28 1   1/29 (3.4%)
UPS (N = 100) 40 48 6 6 12/60 (20%) 49 42 4 5 9/15 (17.6%) 8 77 8 7 15/92 (16.3%)
  1. Negative, < 1; low, ≥ 1 and < 50; high, ≥ 50. N/A and negative were not used for the calculation of the positivity rate
  2. DDLPS dedifferentiated liposarcoma, UPS undifferentiated pleomorphic sarcoma, N/A not available