EGLN2 and neoplasm: There was no significant difference in disease-free survival at baseline histology or residual histology for patients with tumours expressing PHD1 (P = 0.17 and P = 0.23, respectively), PHD2 (P = 0.91 and P = 0.11, respectively) or PHD3 (P = 0.42 and P = 0.12, respectively).