Description of Clinical Anatomical Features and Long Term Follow-up for Patients With ALK Rearrangements

Inclusion Criteria: * Patient must have locally advanced or metastatic NSCLC (Stage IIIb or Stage IV by AJCC 7th.) with positive ALK determined by IHC and/or FISH. * Patient who received crizotinib on an expanded access basis (compassionate use) (ATU) due to their inability to meet eligibility criteria for on-going recruiting trials, inability to participate in other clinical trials (e.g., poor performance status, lack of geographic proximity), or because other medical interventions are not considered appropriate or acceptable * Patient who received marketed crizotinib as a result of the standard care of metastatic NSCLC (Stage IIIb or Stage IV by AJCC 7th.) with positive ALK will also be eligible. * Patient was able to swallow capsules and had no surgical or anatomical condition that precluded the patient from swallowing and absorbing oral medications on an ongoing basis. * Patient has taken at least 1 week of treatment Exclusion Criteria: * Patient included in a crizotinib clinical trial * Patient with known psychiatric or substance abuse disorders that would interfere with cooperation with the requirements of the study.