Efficacy of Platinum-based Chemotherapy Plus Immune Checkpoint Inhibitors for EGFR/ALK/ROS1 Mutant Lung Cancer

The investigators want to evaluate the Efficacy and Safety of Platinum-based Chemotherapy with or without immune checkpoint inhibitors for EGFR/ALK/ROS1 Positive NSCLC who Failed from First-Line Standard Treatment. This study will be divided into three cohorts. Cohort A for EGFR mutation NSCLC, Patient with NGS identified EGFR sensitive mutation NSCLC who failed from first line Osimertinib will be included. Cohort B for ALK fusion NSCLC, Patient with NGS identified ALK fusion NSCLC who failed from first line Alectinib/Lorlatinib/Ceritinib/Ensartinib/Brigatinib will be included. All the patients will be divided two group,3'ALK and 3'ALK with retention of 5'ALK. Cohort C for ROS1 fusion NSCLC, Patient with NGS identified ROS1 fusion NSCLC who failed from first line Crizotinib/Entrectinib/Ensartinib/Brigatinib will be included. The investigators will collect the safety and efficacy data for all the patients. The tissue and blood samples will be collected under the permission of the participate. Single cell sequencing, DSP, RNA-seq and IHC will be performed to evaluate the TME.