Cell‐cell communication analysis showed that SD3 enriched sarcoma cell subtype sarco_2 (Figure 5E) had low expression of HLA‐DRA, HLA‐E, HLA‐F and HLA‐A, and high expression of ICAM1 and TGFB1 (Figure S6C,D). Here, TGFB1 is linked to sarcoma.