Using TIMER, we confirmed that SCARF1 expression is absent from tumor cells, as indicated by a negative “purity” correlation (−0.295; Figure 5B, left panel), and demonstrated a moderate positive correlation with CD4+ T cell infiltration (purity-corrected partial Spearman's rho value = 0.420, p = 3.79e−16; Figure 5B, right panel). Here, CD4 is linked to neoplasm.