HLA-B and neoplasm: Indeed, when we considered tumours with positive HLA class I expression including both HLA-A and HLA-B/C, the mean number of T cells (39 ± 7 CD3+ cells) was not significantly higher compared to tumours with heterogeneous (33 ± 10 CD3+ cells; p = 0.52) or negative HLA class I expression (25 ± 18 CD3+ cells; p = 0.43).