title: IgE-blocking therapy for difficult-to-treat asthma: a brief review.
abstract: OBJECTIVE
  To review the characteristics of difficult-to-treat asthma and describe patients who may benefit from therapy with the recently approved humanized monoclonal antiimmunoglobulin E (IgE) antibody, omalizumab.
  
  
  RESULTS
  Up to 20 percent of patients have difficult-to-treat asthma. These patients consume a disproportionate share of asthma care resources. Clinical and economic outcomes can be improved via improved self-management, increased adherence to prescribed therapy, and better compliance to national asthma treatment guidelines. These patients also may benefit from therapies that directly target mechanisms responsible for persistent airway inflammation and elicit favorable clinical responses.
  
  
  CONCLUSIONS
  Effective asthma control remains difficult in a small cohort of patients with persistent, severe airway inflammation. Management strategies that improve asthma control and reduce exacerbations can improve clinical outcomes and minimize health care resource utilization.
authors.affiliation: University of Texas Health Science Center, Houston Medical School, USA. gmarshall@uth.tmc.edu
authors.forename: Gailen D
authors.initials: GD
authors.lastname: Marshall
authors.forename: Christine A
authors.initials: CA
authors.lastname: Sorkness
mesh_terms: D000888:Antibodies, Anti-Idiotypic; D000911:Antibodies, Monoclonal / Q000008:administration & dosage / Q000627:therapeutic use*; D061067:Antibodies, Monoclonal, Humanized; D001249:Asthma / Q000453:epidemiology / Q000628:therapy*; D006801:Humans; D007073:Immunoglobulin E / Q000187:drug effects*; D000069444:Omalizumab; D014481:United States / Q000453:epidemiology
chemical_list: D000888:Antibodies, Anti-Idiotypic; D000911:Antibodies, Monoclonal; D061067:Antibodies, Monoclonal, Humanized; D000069444:Omalizumab; D007073:Immunoglobulin E