- Stage IIIB or IV patients must have progressed after a platinum based chemotherapy; a maximum of 3 previous systemic regimens are allowed (one regimen can be a tyrosine kinase inhibitor); patients with stage I-IIIB NSCLC who have progressed within 6 months of a full dose platinum based regimen as adjuvant therapy or with radiotherapy are eligible; patients who received weekly low dose chemotherapy with radiation only are not eligible