In order to clarify the mechanism of SQFZ injection in combination with docetaxel on lung cancer, caspase-9 was also measured except for bcl-2 and caspase-3, because it is also a key target in network analysis and has a close connection with caspase-3 in apoptosis signaling pathway, except for bcl-2 and caspase-3. This evidence concerns the gene CASP9 and lung carcinoma.