Additionally, it has been found that OXP can enhance the immune response against tumors by decreasing regulatory/suppressor cells: regulatory T (Treg) cells and myeloid-derived suppressor cells (MDSCs) and increasing the ratio of cytotoxic CD8+T lymphocytes (effector cells) versus immunosuppressive cell populations in the tumor microenviroment [2], [3], [4]. The gene discussed is CD8A; the disease is neoplasm.