A total of 33 cancers have been previously examined in TCGA project, and the tumours have been categorised into six immune subtypes as follows: C1 (wound healing), C2 (IFN-γ dominant), C3 (inflammation), C4 (lymphocyte depletion), C5 (immunologically silent) and C6 (TGF-beta dominance). Here, IFNG is linked to cancer.