CIP2A and small cell lung carcinoma: To examine the role of CIP2A in lung cancer, we first established the expression profile of CIP2A in two immortalized lung cell lines (BEAS-2B and HBEC3), six lung cancer cell lines including four non-small cell lung cancer cell lines (A549, H460, H1299 and H838), and two small cell lung cancer cell lines (H69 and H146).