Phase III Randomized Trial of BIBW 2992 Plus Weekly Paclitaxel Versus Investigator's Choice of Chemotherapy Following BIBW 2992 Monotherapy in Non-small Cell Lung Cancer Patients Failing Previous Erlotinib or Gefitinib Treatment (LUX Lung 5)

The primary objective of this randomized, open-label, active-controlled, multi-center trial is to determine the efficacy of BIBW 2992 given as an add-on to chemotherapy in patients with NSCLC Stage IIIb or IV progressing after BIBW 2992 monotherapy compared to chemotherapy alone in this patient population. Patients on both treatment arms will receive best supportive care in addition to study treatment. Patients enrolled into the trial will be treated and followed until death or lost to follow-up. Additional information on the health-related quality of life (HRQOL) will be collected.