Given that the sgMCL-1#2 demonstrated a more profound reduction of MCL-1 expression, the HK-1/C666-1 sgMCL-1#2 cells were treated with increasing concentrations of either ABT-199 or A-1331852 to access whether MCL-1 deletion sensitized NPC cells to these inhibitors. The gene discussed is MCL1; the disease is nasopharyngeal carcinoma.