This is a phase I/II, open-label, multi-center study in which the PK, safety, tolerability and efficacy of LDK378 will be assessed in adult Chinese patients with locally advanced or metastatic NSCLC harboring a confirmed ALK rearrangement (positive) as assessed using the Vysis ALK Break Apart FISH Probe Kit (Abbott Molecular Inc.) or positive as assessed by immunohistochemistry (IHC) test (Ventana Medical Systems, Inc) using rabbit monoclonal primary antibody assay (D5F3).