CDKN1A and B-cell chronic lymphocytic leukemia: Quercetin in combination with ellagic acid has been shown to increase p21Cip1/Waf1 and MAP kinases in MOLT-4 cells [88], whilst resveratrol has been shown to enhance cell cycle arrest by inhibiting cyclins A and B in Jurkat, U-937, K562, WSU-CLL, HL-60, THP-1 and KCL22 cells [96].