S100A6 and neoplasm: Based on the gene markers and the high expression of HLA-DPB1, S100A6, HLA-DRA, and other genes related to antigen presentation in GSVA, SC-C1 and SC-C3 cells were mainly enriched in hematopoiesis, suggesting that SC-C3 cells may be related to tumor vascular proliferation (Supplementary Figure 2C).