Response to treatment was analyzed in three major groups: (i) uncommon mutations (G719X, S7681, L861Q and combinations)....In patients with uncommon EGFR mutations (group 1), median PFS (mPFS) was significantly longer when patients were treated with EGFR-TKI in 1L compared to chemotherapy (HR 0.53; 95% CI 0.30-0.93, P = 0.028…. Afatinib was the most frequently applied EGFR-TKI in this group (36/79 treatments, 46%), followed by erlotinib (22/79 treatments, 28%), gefitinib (13/79 treatments, 16%) and osimertinib (8/79 treatments, 10%) (Figure 3A).