Figure 6. Relationship between SLC1A5 and immunotherapy-independent efficacy predictive biomarkers. (A) The Spearman correlation heatmap shows that the expression level of SLC1A5 is correlated with 46 immunostimulators and 24 immunoinhibitors. Red indicates a positive correlation and blue indicates a negative correlation. (B) The relationship between SLC1A5 expression level and tumor mutation burden (TMB) in cancer patients. (C) The relationship between the SLC1A5 expression level and microsatellite instability (MSI) in cancer patients. The labeled asterisk indicates the statistical p value (*p < 0.05, **p < 0.01, ***p < 0.001).