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Does omalizumab make a difference to the real-life treatment of asthma exacerbations?: Results from a large cohort of patients with severe uncontrolled asthma

Lamiae Grimaldi-Bensouda, Mahmoud Zureik, Michel Aubier, Marc Humbert, Jean Levy, Jacques Benichou, Mathieu Molimard, Lucien Abenhaim
Chest 2013 February 1, 143 (2): 398-405
23505637

BACKGROUND: Omalizumab has been shown to decrease the risk of hospitalization or ED visits in patients with uncontrolled severe allergic asthma compared with placebo. This longitudinal study observed the conditions under which omalizumab is prescribed in real-life settings and assessed whether its use as an add-on therapy alongside standard treatments decreases the risk of severe asthmatic exacerbations.

METHODS: A cohort of adult patients with uncontrolled severe asthma despite optimal treatment with inhaled and oral corticosteroids and a long-acting b 2 -agonist but no treatment with omalizumab upon entry was assembled. Risk of hospitalization or ED visits for asthma exacerbation was assessed using the Andersen-Gill extension of the Cox model for repeated events, controlling for age, sex, smoking history, BMI, gastroesophageal reflux, allergic status, allergic rhinitis, treatment, and hospitalization or ED visits for asthma in the 2 months prior to omalizumab treatment.

RESULTS: Overall, 163 physicians recruited 767 patients, of whom 374 took omalizumab at least once (mean observation period, 20.4 months). Omalizumab use was associated with an adjusted relative risk of 0.57 (95% CI, 0.43-0.78) for hospitalization or ED visits for asthma. In users of omalizumab, the adjusted relative risk of hospitalization or ED visits for asthma during omalizumab treatment vs nontreatment periods was 0.40 (95% CI, 0.28-0.58).

CONCLUSIONS: Add-on omalizumab is associated with a significantly decreased risk of hospitalization or ED visits in patients with uncontrolled severe asthma in real-life practice.

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