Among its various functions, SYK promotes, in concert with PKCδ, the expression of anti-apoptotic Mcl-1 in B-cell chronic lymphocytic leukemia (CLL) [10] and regulates actin filament assembly and dynamics through phosphorylation of cortactin and cofilin in ovarian cancer, thereby promoting migration and invasion [11]. Here, CFL1 is linked to B-cell chronic lymphocytic leukemia.