Omalizumab for the Treatment of Chronic Idiopathic or Spontaneous Urticaria

Abstract
Many patients with chronic idiopathic urticaria (also called chronic spontaneous urticaria) do not have a response to therapy with H1-antihistamines, even at high doses. In phase 2 trials, omalizumab, an anti-IgE monoclonal antibody that targets IgE and affects mast-cell and basophil function, has shown efficacy in such patients.