Not all lung cancers are of the same type, stage or treated similarly. In a nutshell... A. Targeted therapy For stage 4 lung adenocarcinoma (subset of NSCLC), further testing of EFGR and EML4-ALK mutation are routinely done in Malaysia. ROS1 rearranged mutation driver testing is not routinely done although targetable treatment is available. Those with … Continue reading Stage 4 Lung Cancer: Targeted therapy & Immunotherapy. Which to Start?