Figure 4. Correlation of JAK1 expression with immune infiltration level in the TIMER database. (A) Other than B cells, JAK1 expression has a significant positive correlation with infiltrating levels of CD8+ T cells, CD4+ T cells, macrophages, neutrophils, and dendritic cells in breast cancer. TIMER database analysis in (B) basal, (C) HER2 and (D) luminal subtypes.