Plasma Molecular Profiling in ALK Inhibitor Resistant NSCLC

The investigators plan to understand a comprehensive molecular profiling via the plasma, with the primary aim of using this form on analysis to guide subsequent treatment selection. This study will provide a better understanding of ALK resistance in the treatment of Asian lung cancers and allow for improved clinical outcomes by 'matching' the secondary mutations to an ALK inhibitor which would allow for the greatest coverage ultimately leading to lasting duration of response.