Fig. 6

Correlation analysis of HPN expression and infiltration levels of immune cells in HCC tissues. a Correlation analysis of HPN abundance and expression of markers of immune cells based on proteomic analysis in the discovery cohort (n = 60). b Correlation between HPN expression and infiltration levels of immune cells in HCC by the TIMER database (n = 371). c Correlation between HPN level and twenty-eight tumor immune infiltrating cell subtypes among human heterogeneous cancers. d Top four immune cell subtypes with the greatest Spearman’s correlation value for HPN expression in HCC. HCC hepatocellular carcinoma