Comparison of bevacizumab and ranibizumab in agerelated macular degeneration: a systematic review and meta-analysis

AIM:To compare the effectiveness and safety between bevacizumab and ranibizumab in the treatment of agerelated macular degeneration(AMD)through a systematic review and meta-analysis.METHODS:We performed a comprehensive search of randomized controlled trials(RCTs),non-RCTs,casecontrol and cohort studies that compared bevacizumab and ranibizumab using PubMed and the Cochrane Library.After the related data were extracted by two investigators independently,pooled weighted mean differences(WMDs)and risk ratios(RRs)with 95%confidence intervals(CIs)were estimated using a random-effects or a fixed-effects model.RESULTS:A total of four RCTs involving 1927 patients and eleven retrospective case series involving 2296patients were included.For the primary outcomes,no significant differences were found between ranibizumab group and bevacizumab group in visual acuity(WMD:-0.04;95%CI:-0.08 to 0.00;P=0.06),best corrected visual acuity(WMD:-0.05;95%CI:-0.10 to 0.00;P=0.05),retina thickness(WMD:-4.69;95%CI:-13.15 to 3.76;P=0.86)and foveal thickness(WMD:10.91;95%CI:-14.73 to36.56;P=0.40).The pooled analyses in the evaluation of safety showed that compared to bevacizumab,ranibizumab was associated with decreased risks of ocular inflammation(RR:0.45;95%CI:0.23 to 0.89;P=0.02)and venous thrombotic events(RR:0.27;95%CI:0.08 to 0.89;P=0.03).However,there were no significant differences observed in deaths(P=0.69)and arterialthromboembolic events(P=0.71)between the two groups.CONCLUSION:With equal clinical efficacy,ranibizumab was found to be associated with less adverse events compared to bevacizumab,indicating that ranibizumab might be a safer management.