Continued use of afatinib with the addition of cetuximab after progression on afatinib in patients with EGFR mutation-positive non-small-cell lung cancer and acquired resistance to gefitinib or erlotinib. - Horn, Leora; Gettinger, Scott; Camidge, D. Ross; Smit, Egbert F.; Janjigian, Yelena Y.; Miller, Vincent A.; Pao, William; Freiwald, Matthias; Fan, Jean; Wang, Bushi; Chand, Vikram K.; Groen, Harry J.M. (Lung Cancer (01695002), 2017)