Prognostic value of hypoxia-inducible factor-1 alpha and prolyl 4-hydroxylase beta polypeptide overexpression in gastric cancer

Figure 3 Kaplan-Meier curves for disease-free survival and overall survival. A: Disease free survival curves stratified by HIF-1α expression (P = 0.00); B: Overall survival curves stratified by HIF-1α expression (P = 0.00); C: Disease free survival curves stratified by P4HB expression (P = 0.00); D: Overall survival curves stratified by P4HB expression (P = 0.00). Patients were divided into an over-expression group and a weak-expression group, according to expression of HIF-1α and P4HB. Log-rank test was used to evaluate significance. HIF-1α: Hypoxia-inducible factor-1α; P4HB: Prolyl 4-hydroxylase beta.