PMID- 28044257 OWN - NLM STAT- MEDLINE DCOM- 20180220 LR - 20181113 IS - 1179-2000 (Electronic) IS - 1177-1062 (Linking) VI - 21 IP - 3 DP - 2017 Jun TI - Targeted Therapy for Severe Asthma: Identifying the Right Patients. PG - 235-247 LID - 10.1007/s40291-016-0252-x [doi] AB - Asthma affects over 300 million people worldwide. Most asthmatics are well controlled with inhaled corticosteroids and long-acting beta-agonists; however, a proportion of patients are unresponsive and attain limited disease control. This group represents a considerable healthcare and financial burden, particularly patients who experience frequent exacerbations and require hospital admission. Development of new biological agents and disease biomarkers has provided novel avenues for treatment. These treatments have been highly successful, reducing exacerbations and yielding modest improvements in quality of life and lung function. However, only a proportion of severe asthmatics respond to this targeted treatment, highlighting the heterogeneity of severe asthma. One of the first biological therapies targeted immunoglobulin E (IgE) and demonstrated modest benefit but could only be used in a subgroup of patients. Recent research has shown that treatment aimed at the T helper-2-(Th(2))-high pathways and cytokines such as interleukin (IL)-5, IL-4, and IL-13 may also be effective in another partially overlapping subgroup. A blood eosinophil count over a defined threshold (generally >/=300 cells/mul) was a reliable biomarker and identified the majority of responders in this group. Further discovery and validation of biological markers to define asthmatic phenotypes that may benefit from biological treatments remain an area of intense interest and research. We review the latest information pertaining to biological agents and demonstrate how patient responders may potentially be identified for treatment. FAU - Low, Kathy AU - Low K AD - Lung and Sleep Medicine, Monash University and Medical Centre, 246 Clayton Road, Clayton, Melbourne, VIC, 3168, Australia. FAU - Bardin, Philip G AU - Bardin PG AD - Lung and Sleep Medicine, Monash University and Medical Centre, 246 Clayton Road, Clayton, Melbourne, VIC, 3168, Australia. philip.bardin@monash.edu. AD - Hudson Institute, Melbourne, VIC, Australia. philip.bardin@monash.edu. LA - eng PT - Journal Article PT - Review PL - New Zealand TA - Mol Diagn Ther JT - Molecular diagnosis & therapy JID - 101264260 RN - 0 (Anti-Asthmatic Agents) RN - 0 (Antibodies, Monoclonal) RN - 0 (Antibodies, Monoclonal, Humanized) RN - 0 (Biomarkers) RN - 0 (Cytokines) RN - 35A26E427H (reslizumab) RN - 37341-29-0 (Immunoglobulin E) RN - 71492GE1FX (benralizumab) RN - 90Z2UF0E52 (mepolizumab) SB - IM MH - Anti-Asthmatic Agents/pharmacology/*therapeutic use MH - Antibodies, Monoclonal/pharmacology/therapeutic use MH - Antibodies, Monoclonal, Humanized/therapeutic use MH - Asthma/*drug therapy/*etiology MH - Biomarkers/blood MH - Cytokines/antagonists & inhibitors/metabolism MH - Humans MH - Immunoglobulin E/metabolism MH - Molecular Targeted Therapy/methods MH - Th2 Cells/metabolism/pathology MH - Treatment Failure EDAT- 2017/01/04 06:00 MHDA- 2018/02/21 06:00 CRDT- 2017/01/04 06:00 PHST- 2017/01/04 06:00 [pubmed] PHST- 2018/02/21 06:00 [medline] PHST- 2017/01/04 06:00 [entrez] AID - 10.1007/s40291-016-0252-x [pii] AID - 10.1007/s40291-016-0252-x [doi] PST - ppublish SO - Mol Diagn Ther. 2017 Jun;21(3):235-247. doi: 10.1007/s40291-016-0252-x.