title: Effect of omalizumab on the need for rescue systemic corticosteroid treatment in patients with moderate-to-severe persistent IgE-mediated allergic asthma: a pooled analysis.
abstract: BACKGROUND
  Allergic asthma is an immunoglobulin E (IgE)-mediated disease characterized by frequent exacerbations following exposure to relevant allergens that leads to the development of chronic airway inflammation. Omalizumab, an anti-IgE antibody, reduces asthma exacerbation and hospitalization rates in patients with IgE-mediated allergic asthma. We investigated the effect of omalizumab on asthma outcomes in a retrospective pooled analysis of data from phase III clinical trials in patients (>or= 12 years) with moderate-to-severe persistent IgE-mediated allergic asthma.
  
  
  METHODS
  Systemic corticosteroid bursts and physician and patient overall assessments of asthma control were assessed in patients who received add-on omalizumab or current asthma therapy (control). The association of physician and patient overall assessments with the number of steroid bursts were also evaluated.
  
  
  RESULTS
  The analysis encompassed 4308 patients with moderate-to-severe persistent IgE-mediated allergic asthma (93% met GINA 2002 criteria for severe persistent asthma) from seven clinical trials. The number of systemic corticosteroid bursts was significantly lower in omalizumab-treated patients than in the control group (relative risk [95% CI]: 0.57 [0.48-0.66], p < 0.001). In addition, 58.5% of omalizumab recipients had complete/marked improvement in asthma control according to the physician's overall assessment (responders) vs. 36.9% in the control group (p < 0.001). Similarly, 64.2% of omalizumab patients vs. 43.9% of control patients had complete/marked improvement according to the patient's overall assessment (p < 0.001). There were statistically significant associations between systemic corticosteroid bursts and physician (Goodman-Kruskal gamma [95% CI]: 0.32 [0.26-0.38]) and patient (gamma [95% CI]: 0.29 [0.23-0.36]) overall assessments. This pooled analysis has limitations as it was not pre-specified.
  
  
  CONCLUSIONS
  Omalizumab therapy reduced the need for systemic corticosteroid bursts and improved effectiveness of asthma treatment as judged by both physicians and patients.
authors: University of Wisconsin, Madison, WI, USA.
authors: William W
authors: WW
authors: Busse
authors: Marc
authors: M
authors: Massanari
authors: Farid
authors: F
authors: Kianifard
authors: Gregory P
authors: GP
authors: Geba
mesh_terms: D000293:Adolescent; D000305:Adrenal Cortex Hormones / Q000008:administration & dosage*; D000328:Adult; D000368:Aged; D000888:Antibodies, Anti-Idiotypic; D000911:Antibodies, Monoclonal / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D001249:Asthma / Q000188:drug therapy* / Q000209:etiology / Q000276:immunology; D002648:Child; D004311:Double-Blind Method; D005260:Female; D006801:Humans; D007073:Immunoglobulin E / Q000276:immunology*; D008297:Male; D008875:Middle Aged; D000069444:Omalizumab; D010919:Placebos; D012189:Retrospective Studies; D012720:Severity of Illness Index; D016896:Treatment Outcome
chemical_list: D000305:Adrenal Cortex Hormones; D000888:Antibodies, Anti-Idiotypic; D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D010919:Placebos; D000069444:Omalizumab; D007073:Immunoglobulin E