SF3B1 and B-cell chronic lymphocytic leukemia: When used in combination with BCL-2 inhibitors, these SF3B1 inhibitors have been demonstrated to induce apoptosis in small lung cancer cells, chronic lymphocytic leukemia cells and head and neck cancer cells (Gao and Koide, 2013; Larrayoz et al., 2016; Gao et al., 2014).