CD4 and gastric cancer: Upregulation of THSD7A showed a significantly positive correlation with resting mast cells, M2 macrophages, and Tregs, but showed a negative correlation with follicular helper T cells, activated CD4+ memory T cells, and M1 macrophages, suggesting that the upregulation of THSD7A promotes the recruitment of resting mast cells, M2 macrophages, and Tregs in the microenvironment of gastric cancer.