C4A and cancer: Then, we compare our signature with other immune subtypes derived from pan‐cancer,25 the high‐risk group contains C2 (IFN‐γ dominant), C3 (inflammatory), C4 (lymphocyte depleted), and C5 (immunologically quiet) immune subtypes, but nearly all cases in the low‐risk group were assigned to C5 subtype, which is mainly characterized with less TAMs (Figure 6F and Figure S3G).