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Background  There are two main choices of administration route of recombinant human endostatin (Endostar) available and the treatment options of concurrent chemoradiotherapy (CCRT) have changed over time. The aim of this study was to observe the long‐term efficacy and safety of different administration routes of Endostar combined with CCRT.    Methods  Patients with unresectable stage III non‐small cell lung cancer (NSCLC) from two phase II trials were included as two cohorts. Both were treated with Endostar combined with CCRT. Endostar was administrated by intravenous injection (7.5 mg/m 2 /day, seven days) in the IV arm and by continuous intravenous pumping (7.5 mg/m 2 /24 hours, 120 hours) in the CIV arm.    Results  A total of 48 patients were included in the IV arm and 67 patients in the CIV arm. The median progression‐free survival (PFS), overall survival (OS), local recurrence‐free survival (LRFS) and distant metastasis‐free survival (DMFS) in the IV arm and CIV arm were 9.9 months versus 15.4 months (HR = 0.751, 95% CI 0.487–1.160,  P =  0.200), 24.0 months versus 38.5 months (HR = 0.746, 95% CI 0.473–1.178,  P =  0.209), 32.3 months versus 27.1 months (HR = 1.193, 95% CI 0.673–2.115,  P =  0.546), 20.1 months versus 49.7 months (HR = 0.603, 95% CI 0.351–1.036,  P =  0.067). The one, three, five‐year PFS in the IV arm and CIV arm was 45.8% versus 52.9%, 18.3% versus 31.4%, and 18.3% versus 27.7% and the one, three, five‐year OS was 81.2% versus 82.1%, 31.1% versus 50.3%, and 31.1% versus 41%, respectively. Incidence of hematological adverse reactions were numerically lower in the CIV arm than the IV arm.    Conclusions  Endostar delivered by CIV with CCRT may be a better option than IV in terms of potential survival and safety for unresectable stage III NSCLC.    Key points   Significant findings of the study  Endostar delivered by continuous intravenous pumping might achieve more favorable survival over intravenous injection and reduce adverse hematological reactions in patients with unresectable stage III NSCLC treated with Endostar combined with CCRT. What this study adds  The administration route of recombinant human endostatin is also one key factor for survival and safety to consider when treating patients with unresectable stage III NSCLC.

thoracic cancer

Different administration routes of recombinant human endostatin combined with concurrent chemoradiotherapy might lead to different efficacy and safety profile in unresectable stage III non‐small cell lung cancer: Updated follow‐up results from two phase II trials