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Kaplan Meier estimates of overall survival evaluated from the date of lapatinib-based therapy initiation in 132 patients according to PFS >7 months (solid line) or PFS ≤7 months (dashed line). Median overall survival is 36 months (95% C.I. 9–21 months) and 15 months (19–53 months), respectively (p<0.001).
