MS4A1 and small cell lung carcinoma: Also, the ITGAX (which encodes for dendritic cell marker CD11c), CD8A (a marker of CD8+ T cell), and MS4A1 (which encodes for B‐cell marker CD20) genes presented markedly high expression in STING‐high SCLC tumors, and they positively correlated with STING expression (Figure 3G, Figure S3C,D).