Oral corticosteroid sparing with omalizumab in severe allergic (IgE-mediated) asthma patients

Zenon Siergiejko, Ewa Świebocka, Nicola Smith, Clare Peckitt, Jo Leo, Guy Peachey, Robert Maykut
Current Medical Research and Opinion 2011, 27 (11): 2223-8

BACKGROUND: Long-term oral corticosteroid (OCS) therapy and related adverse events are associated with a significant burden on patients and healthcare resources.

METHODS: This subgroup analysis of a randomized, open-label, parallel-group study evaluated the OCS-sparing effect of omalizumab (OMA) added to optimized asthma therapy (OAT), compared with OAT alone. Patients (12-75 years) with severe allergic asthma, uncontrolled despite GINA 2004 Step 4 therapy, received OMA or OAT for 32 weeks. The change from baseline in OCS use by Week 32 in patients requiring maintenance OCS at baseline was assessed in terms of percent OCS dose change and numbers of patients with reduced/stopped or maintained/increased OCS.

RESULTS: Eighty-two patients were receiving maintenance OCS at baseline (OMA/OAT n = 59, OAT n = 23). Change from baseline in mean maintenance OCS dose at Week 32 was significantly greater in the OMA/OAT group compared with the OAT group (-45% vs. + 18.3%, p = 0.002). In the OMA/OAT group, 37 patients (62.7%) reduced/stopped OCS use at Week 32, compared with seven patients (30.4%) receiving OAT (p = 0.013). Improvements in other efficacy outcomes were seen at Week 32 in the OMA/OAT group, irrespective of OCS use. An investigator global evaluation of treatment effectiveness at Week 16 was an effective predictor of persistent treatment response at 32 weeks for the majority of OMA/OAT patients (93%), also irrespective of OCS use.

CONCLUSION: In this open-label study of patients with severe allergic asthma, OMA/OAT therapy reduced maintenance OCS use, compared with OAT alone. Improvements in efficacy measures were observed in the OMA/OAT group, irrespective of OCS change. CLINICALTRIALS.GOV IDENTIFIER: NCT00264849.

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