The correlation between core circadian clock genes and immune infiltration (TIMER). (A) The correlation between NR1D1 expression and the abundance of CD8+ T cells, CD4+ T cells, Macrophage, Neutrophils and Dendritic cells. (B) The correlation between PER1 expression and the abundance of CD8+ T cells, CD4+ T cells, Macrophage, Neutrophils and Dendritic cells. (C) the correlation between SCNA of NR1D1 and immune cell infiltration. (D) the correlation between SCNA of PER1 and immune cell infiltration. (E) the correlation between core circadian clock genes and the expression of chemokines in STAD. (F) the correlation between core circadian clock genes and the expression of chemokine receptors in STAD. Red color represents positive correlation, blue color represents negative correlation. SCNA, somatic copy number alterations; *P < 0.05, **P < 0.01, ***P < 0.001.