Fig. 2

Kaplan-Meier survival curves of the patients with PC expression of S100A4 and serum levels of CA19.9. a Patients with positive expression of S100A4 vs negative expression of S100A4. b Patients with high CA19.9 level (≥ 35 U/ml) vs normal CA19.9 level (< 35 U/ml). c Subgroup of patients with positive expression of S100A4 and high CA19.9 level vs normal CA19.9 level. d Subgroup of patients with negative expression of S100A4 and high CA19.9 level vs normal CA19.9 level. e Patients with high differentiation vs moderate and low differentiation. f Patients with stages I–II vs stages III–IV