BACKGROUND: Crizotinib is a tyrosine kinase inhibitor (TKI) effective in ALK/ROS-1/c-MET positive non-small cell lung cancer (NSCLC) patients. Bevacizumab is an antiangiogenic monoclonal antibody, and improves clinical benefit of NSCLC in combination with EGFR-TKIs or chemotherapy. However, the efficacy and safety of crizotinib plus bevacizumab in treating naive ALK/ROS-1/c-MET positive NSCLC patients have not been studied. METHODS: In this open-label, single-arm, prospective observational study, locally advanced or metastatic ALK rearrangement/ROS-1 fusion/c-MET amplification NSCLC patients were treated with crizotinib (250 mg orally twice daily) and bevacizumab (7.5 mg/kg intravenous every three weeks) until disease progression or intolerant toxicity or death. Primary end point was progressive free survival (PFS), secondary end points were duration of response (DOR), overall response rate (ORR), disease control rate (DCR) and safety. Patients receiving ≥1 cycle of treatment were evaluated. FINDINGS: Fourteen patients were eligible for analyzing between June 2016 and October 2017. There were 12 patients with ALK rearrangement, 1 patient with ROS-1 fusion, and 1 patient with c-MET amplification. The median follow-up time was 42.8 months. The median PFS and DOR of the patients with ALK rearrangement were 13.9 and 14.8 months respectively. Of the 12 patients, 7 gained partial response, 5 gained stable disease. The ORR and DCR were 58.3% and 100%. The PFS were 12.9 months and 1.9 months for patient with ROS-1 fusion or c-MET amplification. The most two common treatment-related adverse events were fatigue (28.6%) and rash (21.4%). 3 patients discontinued therapy because of liver damage or hemoptysis. INTERPRETATION: This study demonstrated that crizotinib plus bevacizumab showed benefit in treating naive ALK rearrangement NSCLC patients, and the toxicity was relatively tolerant. Our results suggested that crizotinib plus bevacizumab might be a promising treatment strategy in ALK/ROS-1/c-MET positive NSCLC patients. AJTR
BACKGROUND:Crizotinib is a tyrosine kinase inhibitor (TKI) effective in ALK/ROS-1/c-MET positive non-small cell lung cancer (NSCLC) patients. Bevacizumab is an antiangiogenic monoclonal antibody, and improves clinical benefit of NSCLC in combination with EGFR-TKIs or chemotherapy. However, the efficacy and safety of crizotinib plus bevacizumab in treating naive ALK/ROS-1/c-MET positive NSCLCpatients have not been studied. METHODS: In this open-label, single-arm, prospective observational study, locally advanced or metastatic ALK rearrangement/ROS-1 fusion/c-MET amplification NSCLCpatients were treated with crizotinib (250 mg orally twice daily) and bevacizumab (7.5 mg/kg intravenous every three weeks) until disease progression or intolerant toxicity or death. Primary end point was progressive free survival (PFS), secondary end points were duration of response (DOR), overall response rate (ORR), disease control rate (DCR) and safety. Patients receiving ≥1 cycle of treatment were evaluated. FINDINGS: Fourteen patients were eligible for analyzing between June 2016 and October 2017. There were 12 patients with ALK rearrangement, 1 patient with ROS-1 fusion, and 1 patient with c-MET amplification. The median follow-up time was 42.8 months. The median PFS and DOR of the patients with ALK rearrangement were 13.9 and 14.8 months respectively. Of the 12 patients, 7 gained partial response, 5 gained stable disease. The ORR and DCR were 58.3% and 100%. The PFS were 12.9 months and 1.9 months for patient with ROS-1 fusion or c-MET amplification. The most two common treatment-related adverse events were fatigue (28.6%) and rash (21.4%). 3 patients discontinued therapy because of liver damage or hemoptysis. INTERPRETATION: This study demonstrated that crizotinib plus bevacizumab showed benefit in treating naive ALK rearrangement NSCLCpatients, and the toxicity was relatively tolerant. Our results suggested that crizotinib plus bevacizumab might be a promising treatment strategy in ALK/ROS-1/c-MET positive NSCLCpatients. AJTR
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