However, study showed that the expression of TMB also correlated with the expression of some kinds of immune cells in ovarian cancer patients, such as B cells naïve, B cells memory, T cells CD4 memory resting, T cells CD4 memory activated, T cells follicular helper, T cells regulatory, monocytes, macrophages M1, mast cells resting, and neutrophils [12]. Here, CD4 is linked to ovarian cancer.