CHAC2 and breast neoplasm: Thus, we investigated the correlation between CHAC2 and immune cell infiltration from different databases and found that a positive correlation of CHAC2 existed with the infiltration of activated CD8+, CD4+ T cells, and activated dendritic cells indicating that CHAC2 may have an important role to play in the infiltration of these immune cells and ultimately of the breast tumor microenvironment.