Abstract
Recently, more and more clinical trials have been performed to evaluate the effects of anti-interleukin (IL)-5 antibodies in eosinophilic asthma. However, a confirm conclusion has not been well established. We therefore sought to conduct a meta-analysis to assess the overall efficacy and safety of anti-interleukin 5 treatments in eosinophilic asthma. RCTs of anti-interleukin 5 treatments in eosinophilic asthma published up to June 2016 in PubMed, Embase, Cochrane library databases, and CBM, which reported pulmonary functions, quality-of-life scores, asthmatic exacerbations, and adverse events were included. Fixed-effect models were used to calculate mean difference, relative risks (RR), and 95 % CIs. Twelve studies involving 3340 patients were identified. Pooled analysis revealed significant improvements in FEV1 (nine trials, 1935 subjects; MD = 0.12; 95 % CI, 0.08–0.16), and Asthma Quality-of-Life Questionnaire scores (five trials, 1334 subjects; MD = 0.23; 95 % CI, 0.13–0.34). Anti-interleukin 5 treatment was also associated with significantly decreased exacerbation risk than placebo (six trials, 875 subjects; RR = 0.52; 95 % CI, 0.46 to 0.59) and a lower incidence of adverse events (eight trials, 1754 subjects; RR = 0.93; 95 % CI, 0.89 to 0.97). Anti-interleukin 5 treatment is well tolerated and could significantly improve FEV1, quality of life, and reduced exacerbations risk in patients with eosinophilic asthma. Further trials are necessary to assess the baseline blood eosinophil count to identify the optimal patients of eosinophilic asthma that could benefit from anti-interleukin 5 therapy.
Similar content being viewed by others
References
Gibson PG (2009) Inflammatory phenotypes in adult asthma: clinical applications. Clin Respir J 3(4):198–206. doi:10.1111/j.1752-699X.2009.00162.x
Aleman F, Lim HF, Nair P (2016) Eosinophilic endotype of asthma. Immunol Allergy Clin North Am 36(3):559–568. doi:10.1016/j.iac.2016.03.006
Garcia G, Taille C, Laveneziana P, Bourdin A, Chanez P, Humbert M (2013) Anti-interleukin-5 therapy in severe asthma. Eur Respir Rev 22(129):251–257. doi:10.1183/09059180.00004013
Durham AL, Caramori G, Chung KF, Adcock IM (2016) Targeted anti-inflammatory therapeutics in asthma and chronic obstructive lung disease. Transl Res 167(1):192–203. doi:10.1016/j.trsl.2015.08.004
Takatsu K, Nakajima H (2008) IL-5 and eosinophilia. Curr Opin Immunol 20(3):288–294. doi:10.1016/j.coi.2008.04.001
Flood-Page P, Swenson C, Faiferman I, Matthews J, Williams M, Brannick L, Robinson D, Wenzel S, Busse W, Hansel TT, Barnes NC (2007) A study to evaluate safety and efficacy of mepolizumab in patients with moderate persistent asthma. Am J Respir Crit Care Med 176(11):1062–1071
Haldar P, Brightling CE, Hargadon B, Gupta S, Monteiro W, Sousa A, Marshall RP, Bradding P, Green RH, WardIaw AJ, Pavord ID (2009) Mepolizumab and exacerbations of refractory eosinophilic asthma. N Engl J Med 360(10):973–984
Nair P, Pizzichini MMM, Kjarsgaard M, Inman MD, Efthimiadis A, Pizzichini E, Hargreave FE, O’Byrne PM (2009) Mepolizumab for prednisone-dependent asthma with sputum eosinophilia. N Engl J Med 360(10):985–993
Bel EH, Wenzel SE, Thompson PJ, Prazma CM, Keene ON, Yancey SW, Ortega HG, Pavord ID (2014) Oral glucocorticoid-sparing effect of mepolizumab in eosinophilic asthma. N Engl J Med 371(13):1189–1197. doi:10.1056/NEJMoa1403291
Ortega HG, Liu MC, Pavord ID, Brusselle GG, FitzGerald JM, Chetta A, Humbert M, Katz LE, Keene ON, Yancey SW, Chanez P, Investigators M (2014) Mepolizumab treatment in patients with severe eosinophilic asthma. N Engl J Med 371(13):1198–1207
Pavord ID, Korn S, Howarth P, Bleecker ER, Buhl R, Keene ON, Ortega H, Chanez P (2012) Mepolizumab for severe eosinophilic asthma (DREAM): a multicentre, double-blind, placebo-controlled trial. Lancet (London, England) 380(9842):651–659. doi:10.1016/s0140-6736(12)60988-x
Castro M, Wenzel SE, Bleecker ER, Pizzichini E, Kuna P, Busse WW, Gossage DL, Ward CK, Wu Y, Wang B, Khatry DB, Merwe R, Kolbeck R, Molfino NA, Raible DG (2014) Benralizumab, an anti-interleukin 5 receptor alpha monoclonal antibody, versus placebo for uncontrolled eosinophilic asthma: a phase 2b randomised dose-ranging study. Lancet Respir Med 2(11):878–890. doi:10.1016/S2213-2600%2814%2970201-2
Moher D, Liberati A, Tetzlaff J, Altman DG, PRISMA Group (2009) Preferred reporting items for systematic reviews and meta-analyses: the PRISMA statement. J Clin Epidemiol 62(10):1006–1012. doi:10.1016/j.jclinepi.2009.06.005
Higgins J, Green S (2013) Cochrane handbook for systematic reviews of interventions version 5.1. 0, The Cochrane Collaboration, 2011
Higgins JP, Thompson SG (2002) Quantifying heterogeneity in a meta-analysis. Stat Med 21(11):1539–1558. doi:10.1002/sim.1186
Egger M, Davey Smith G, Schneider M, Minder C (1997) Bias in meta-analysis detected by a simple, graphical test. BMJ (Clinical research ed) 315(7109):629–634
Brok J, Thorlund K, Wetterslev J, Gluud C (2009) Apparently conclusive meta-analyses may be inconclusive—trial sequential analysis adjustment of random error risk due to repetitive testing of accumulating data in apparently conclusive neonatal meta-analyses. Int J Epidemiol 38(1):287–298
Thorlund K, Engstrøm J, Wetterslev J, Brok J, Imberger G, Gluud C (2011) User manual for trial sequential analysis (TSA). Copenhagen Trial Unit, Centre for Clinical Intervention Research, Copenhagen
Castro M, Mathur S, Hargreave F, Boulet LP, Xie F, Young J, Wilkins HJ, Henkel T, Nair P (2011) Reslizumab for poorly controlled, eosinophilic asthma: a randomized, placebo-controlled study. Am J Respir Crit Care Med 184(10):1125–1132. doi:10.1164/rccm.201103-0396OC
Castro M, Zangrilli J, Wechsler ME, Bateman ED, Brusselle GG, Bardin P (2015) Reslizumab for inadequately controlled asthma with elevated blood eosinophil counts: results from two multicentre, parallel, double-blind, randomised, placebo-controlled, phase 3 trials. Lancet Respir Med 3(5):355–366. doi:10.1016/S2213-2600(15)00042-9
Corren J, Weinstein S, Janka L, Zangrilli J, Garin M (2016) Phase 3 study of reslizumab in patients with poorly controlled asthma: effects across a broad range of eosinophil counts. Chest. doi:10.1016/j.chest.2016.03.018
Bjermer L, Lemiere C, Maspero J, Weiss S, Zangrilli J, Germinaro M (2016) Reslizumab for inadequately controlled asthma with elevated blood eosinophil levels: a randomized phase 3 study. Chest. doi:10.1016/j.chest.2016.03.032
Laviolette M, Gossage DL, Gauvreau G, Leigh R, Olivenstein R, Katial R, Busse WW, Wenzel S, Wu Y, Datta V, Kolbeck R, Molfino NA (2013) Effects of benralizumab on airway eosinophils in asthmatic patients with sputum eosinophilia. J Allergy Clin Immunol 132(5):1086–1096.e1085. doi:10.1016/j.jaci.2013.05.020
Park HS, Kim MK, Imai N, Nakanishi T, Adachi M, Ohta K (2016) A phase 2a study of benralizumab for patients with eosinophilic asthma in South Korea and Japan. Int Arch Allergy Immunol 169(3):135–145. doi:10.1159/000444799
The Global Asthma Report (2014) Auckland. Global Asthma Network, New Zealand, Available at: http://www.globalasthmareport.org/resources/Global_Asthma_Report_2014.pdf
Cardet JC, Israel E (2015) Update on reslizumab for eosinophilic asthma. Expert Opin Biol Ther 15(10):1531–1539. doi:10.1517/14712598.2015.1090972
Liu Y, Zhang S, Li DW, Jiang SJ (2013) Efficacy of anti-interleukin-5 therapy with mepolizumab in patients with asthma: a meta-analysis of randomized placebo-controlled trials. PLoS One 8:3. doi:10.1371/journal.pone.0059872
Powell C, Milan SJ, Dwan K, Bax L, Walters N (2015) Mepolizumab versus placebo for asthma. Cochrane Database Syst Rev 7:CD010834
Leckie MJ, Ten Brinke A, Khan J, Diamant Z, O’Connor BJ, Walls CM, Mathur AK, Cowley HC, Chung KF, Djukanovic R, Hansel TT, Holgate ST, Sterk PJ, Barnes PJ (2000) Effects of an interleukin-5 blocking monoclonal antibody on eosinophils, airway hyper-responsiveness, and the late asthmatic response. Lancet (London, England) 356(SUPPL):2144–2148
Juniper EF, Guyatt G, Epstein R, Ferrie P, Jaeschke R, Hiller TK (1992) Evaluation of impairment of health related quality of life in asthma: development of a questionnaire for use in clinical trials. Thorax 47(2):76–83
Juniper EF, Guyatt GH, Willan A, Griffith LE (1994) Determining a minimal important change in a disease-specific Quality of Life Questionnaire. J Clin Epidemiol 47(1):81–87
Masoli M, Fabian D, Holt S, Beasley R, Global Initiative for Asthma P (2004) The global burden of asthma: executive summary of the GINA Dissemination Committee report. Allergy 59(5):469–478. doi:10.1111/j.1398-9995.2004.00526.x
Schatz M, Li Q, Chen W, Khatry D, Tran T, Zeiger R (2014) Elevated blood eosinophil level is a risk factor for exacerbations in adult persistent asthma. In: C33. Cytokines and asthma mediators. Am Thoracic Soc A4235–A4235
Malinovschi A, Fonseca JA, Jacinto T, Alving K, Janson C (2013) Exhaled nitric oxide levels and blood eosinophil counts independently associate with wheeze and asthma events in National Health and Nutrition Examination Survey subjects. The Journal of Allergy and Clinical Immunology 132 (4):821–827 e821–825. doi:10.1016/j.jaci.2013.06.007
Green RH, Brightling CE, McKenna S, Hargadon B, Parker D, Bradding P, Wardlaw AJ, Pavord ID (2002) Asthma exacerbations and sputum eosinophil counts: a randomised controlled trial. Lancet (London, England) 360(9347):1715–1721. doi:10.1016/S0140-6736(02)11679-5
Nadif R, Siroux V, Oryszczyn MP, Ravault C, Pison C, Pin I, Epidemiological Study on the Genetics and Environment of Asthma (EGEA) (2009) Heterogeneity of asthma according to blood inflammatory patterns. Thorax 64(5):374–380. doi:10.1136/thx.2008.103069
Ortega HG, Yancey SW, Mayer B, Gunsoy NB, Keene ON, Bleecker ER, Brightling CE, Pavord ID (2016) Severe eosinophilic asthma treated with mepolizumab stratified by baseline eosinophil thresholds: a secondary analysis of the DREAM and MENSA studies. Lancet Respir Med 4(7):549–556. doi:10.1016/S2213-2600(16)30031-5
Acknowledgments
We are grateful to the authors of the primary studies included in this meta-analysis. We thank Jiao-Qing Tang for his help and editorial advice during the preparation of the review.
Author information
Authors and Affiliations
Corresponding authors
Ethics declarations
Funding
This study did not receive any funding.
Conflict of Interest
The authors declare no conflict of interest.
Author Contributions
Fa-Ping Wang and Xiao-Feng Xiong performed the literature searches, selected the studies, analyzed the data, and wrote the manuscript draft. Ting Liu and Su-Yun Li aided in the data analysis. Hui Mao and De-Yun Cheng designed the study and revised manuscript.
Ethical Approval
This article does not contain any studies with human participants or animals performed by any of the authors.
Additional information
Fa-Ping Wang and Xiao-Feng Xiong contributed equally to this work.
Rights and permissions
About this article
Cite this article
Wang, FP., Xiong, XF., Liu, T. et al. Anti-interleukin 5 Therapy for Eosinophilic Asthma: a Meta-analysis of Randomized Clinical Trials. Clinic Rev Allerg Immunol 54, 318–330 (2018). https://doi.org/10.1007/s12016-016-8588-x
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12016-016-8588-x