CD4 and ovarian cancer: In line with a role for Th17 cells in the recruitment of immune cells within tumors, Th17 cells in human ovarian cancers were positively correlated with IFN-γ+ CD4+ T cells, IFN-γ+ IL-17+ CD4+ T cells, and IFN-γ+ CD8+ T cells, whereas negatively correlating with Treg cells.