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Overall and progression-free survival by EGFRvIII mutation. Overall (a, c) and progression-free survival (b, d; by central review) by treatment arm for patients with (a, b) or without (c, d) EGFRvIII mutation on an intent-to treat basis. The number of patients at risk over time is shown below the curves. HR, Hazard ratio (with 95% confidence intervals).
