In the TMAs, our results showed that HCC patients expressing high levels of LSD1 protein tended to have low PD‐L1 protein expression in tumour cells (ρ = −.1403, p = .0385) and a reduced number of CD8+ T cells (ρ = −.2984, p < .0001) (Figure 1D). This evidence concerns the gene CD274 and hepatocellular carcinoma.