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Progression-free survival with high (≥280 pg/mL) and low (<280 pg/mL) pretreatment serum VEGF levels, respectively.
Note: Hazard ratio (high versus low) =1.60 (95% CI, 1.063–2.408), P=0.024.
Abbreviations: CI, confidence interval; VEGF, vascular endothelial growth factor.
