NCT00773383 2013-06-24A Study of the Effect of R1507 in Combination With Tarceva (Erlotinib) on Progression-Free Survival in Patients With Stage IIIb/IV Non-Small Cell Lung Cancer (NSCLC) Having Received Tarceva Monotherapy.Hoffmann-La RochePhase 2 Terminated35 enrolled 9 charts