CD4 and acute myeloid leukemia: In CD4+CD7− T cells from AML patients VPA decreased (p = 0.030) and IFNα-2b increased cleaved caspase-3 levels (p = 0.017), whereas IFNα-2b gave increased caspase-3 levels in double-negative (DN) T cells (IFNα-2b; p = 0.003, VPA/IFNα-2b; p = 0.038).