There were more T cells in the tumours of ID8-p53−/−Brca2−/− mice and more activated T cells and cDC2s in the B16F10 tumours, similar to findings by Yang et al.25 who investigated the effect of FGL2 produced by cells in the TME of hepatocellular carcinoma models. Here, FGL2 is linked to hepatocellular carcinoma.