Significant increases in mRNA and protein expression levels of Bcl-2 were found in PC-9-Br compared with parental PC-9 (PC-9-P)...A remarkable synergistic effect between EGFR-TKI gefitinib and Bcl-2 inhibitors ABT-263...or ABT-199...to overcome acquired resistance to gefitinib...in PC-9-Br was observed in MTT assays....In conclusion, our study demonstrated gefitinib + ABT263/ABT199, afatinib, and AZD9291 have clinical potential to treat LCBM.