JOURNAL ARTICLE
MULTICENTER STUDY
RANDOMIZED CONTROLLED TRIAL

Efficacy and tolerability of anti-immunoglobulin E therapy with omalizumab in patients with poorly controlled (moderate-to-severe) allergic asthma

J G Ayres, B Higgins, E R Chilvers, G Ayre, M Blogg, H Fox
Allergy 2004, 59 (7): 701-8
15180756

BACKGROUND: Patients with poorly controlled asthma have greater morbidity and mortality. This study evaluated the efficacy and tolerability of omalizumab in patients with poorly controlled, moderate-to-severe allergic asthma.

METHODS: This was a randomized, open-label, multicentre, parallel-group study. A total of 312 patients (12-73 years) receiving >/=400 microg/day (adolescent) or >/=800 microg/day (adult) inhaled beclomethasone dipropionate, or equivalent were included. Patients received best standard care (BSC) with or without omalizumab [at least 0.016 mg/kg/IgE (IU/ml) every 4 weeks] for 12 months.

RESULTS: The annualized mean number of asthma deterioration-related incidents was reduced from 9.76 with BSC alone (n = 106) to 4.92 per patient-year with omalizumab (n = 206) (P < 0.001). Mean clinically significant asthma exacerbation rates were 2.86 and 1.12 per patient-year, respectively (P < 0.001). Omalizumab-treated patients (41.4%) required rescue medication <1 day/week compared with 20.7% for BSC alone (P < 0.001). Omalizumab improved absolute forced expiratory volume in 1 s (FEV(1)) compared with BSC alone (2.48 and 2.28 l, respectively; P < 0.05) and reduced symptom scores relative to BSC alone (decrease of 6.5 and 0.7 respectively; P < 0.001). Omalizumab was well-tolerated.

CONCLUSIONS: Omalizumab administered as add-on therapy to BSC benefits patients with poorly controlled, moderate-to-severe allergic asthma.

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