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Effectiveness of Omalizumab for patients with refractory allergic asthma: a Meta analysis of randomized controlled studies |
MOU Shan ZHANG Wei JIANG Depeng |
Department of Respiratory Medicine, the Second Affiliated Hospital of Chongqing Medical University, Chongqing 400000, China |
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Abstract Objective To evaluate the effectiveness of Omalizumab in patients with refractory allergic asthma. Methods The databases including PubMed, Web of Science, Embase, Cochrane Library, and ScienceDirect were searched by computer, and the retrieval time of each database was from the database establishment to November 2017. Then 2 reviewers screened studies, extracted data, and evaluated the quality of included randomized controlled trials, and Meta-analyses were conducted with RevMan 5.3. Results A total of 12 clinical randomized controlled trials were included. Compared with placebo, Omalizumab treatment was associated with an improved asthma-related quality of life at the end of the stable (RR = 1.56, 95%CI: 1.32-1.85, P < 0.000 01) and steroid dose reduction phases (RR = 1.90, 95%CI: 1.45-2.49, P < 0.000 01). Meanwhile, compared with placebo, Omalizumab therapy showed a significantly increased number of patients with investigator global evaluation of therapy effective rated as excellent or good at the end of both phases (RR = 1.36, 95%CI: 1.25-1.49, P < 0.000 01; RR = 1.48, 95%CI: 1.36-1.61, P < 0.000 01). Besides, Omalizumab reduced the number of patients with severe exacerbations during stable-steroid phase (RR = 0.51, 95%CI: 0.41-0.64, P < 0.000 01). Conclusion The addition of Omalizumab to standard therapy in patients with refractory allergic asthma can improve asthma related quality of life, relieve symptoms and reduce severe asthma exacerbations.
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