MCL1 and B-cell chronic lymphocytic leukemia: Sorafenib, developed as a BRAF inhibitor, reduces MCL1 translation leading to increased apoptosis in leukemia cells [38] while Flavopiridol, a cyclin-dependent kinase inhibitor, suppresses MCL1 and has been used to treat patients with high-risk chronic lymphocytic leukemia (CLL) [39, 40].