<qa>  What is the name of the stage IIIB?2. For NSCLC subjects: Locally advanced, unresectable, incurable stage IIIB pleural effusion or stage IV NSCLC, or recurrent NSCLC that is not potentially curable by radiotherapy or surgery. Patients must have received at least one prior platinum-based chemotherapy regimen for NSCLC. For SCLC subjects: Extensive disease or recurrent disease after initial treatment for limited disease. Patients must have received prior platinum-based chemotherapy or chemoradiotherapy. All subjects: There is no limit to the number of prior chemotherapy regimens received. 