Moreover, the antigen-presenting genes HLA-DQA1 and HLA-DQB1 were strongly correlated with pseudotime in IBC tumour-infiltrating myeloid cells (Extended Data Fig. S5d), suggesting that IBC tumour-infiltrating myeloid cells may promote humoral immunity by enhancing their antigen-presenting ability. This evidence concerns the gene HLA-DQB1 and neoplasm.