- Evidence of histologically or cytologically confirmed diagnosis of metastatic NSCLC (Stage IV, AJCC v7.0) that carries an ALK rearrangement, as determined by the Food and Drug Administration (FDA) approved FISH assay (Abbott Molecular Inc) or by Immunohistochemistry (IHC) (Ventana Inc), or a ROS1 rearrangement as determined by FISH or RT PCR or Next Generation Sequencing (NGS) via a local diagnostic test (LDT). All patients (ALK positive and ROS1 positive) must have archival tissue sample available and collected prior to enrollment.