Table 2

Correlation of HLA-DRB1 with the presence of HPVa

Risk factorTSCC (n = 52) n (%)Controls (n = 48) n (%)
Expression of HLA-DRB1
 Present20 (38.5%)14 (29.2%)
 Absent25 (48.1%)33 (68.7%)
 Unknown7 (13.5%)1 (2.1%)
Presence of HPV and HLA-DRB1
 Both present11 (21.2%)2 (4.2%)
 HPV only11 (21.2%)1 (2.1%)
 HLA-DRB1 only9 (17.3%)12 (25.0%)
 HPV present/HLA status unknown2 (3.8%)0
 HPV absent/HLA status unknown5 (9.6%)1 (2.1%)
 Neither14 (26.9%)32 (66.7%)
  • a One control patient had no chart documentation on smoking history.