nearly significantp = 0.051
As concerned sEGFR, a cut-off value of 56.87 ng/mL clearly differentiated among patients expressing lower levels and experiencing lower median overall survival periods of 4.2 months in contrast to patients displaying levels well above of the cut-off value who presented median overall survival intervals of 9.5 months ( p = 0.016); progression-free survival differences were nearly significant ( p = 0.051).