American Journal of Respiratory and Critical Care Medicine Vol 175. pp. 196a-197, (2007)
© 2007 American Thoracic Society
Study of Infliximab Treatment in Asthma
From the Authors:
We are in agreement with the comments of Dr. Edwards and Prof. Polosa on our study employing a monoclonal antibody directed against TNF- in patients with moderate asthma (1). Indeed, the major message from our article is that this type of therapy now merits assessment in larger scale, longer term clinical trials of patients with severe asthma. We concur that these studies should include asthma exacerbations as a major clinical endpoint. Further encouragement for examining therapy directed against TNF- is provided by a recently published study in 10 patients with severe refractory asthma who noted improvements in asthma-related quality-of-life, lung function, and bronchial hyperresponsiveness (2), and an open-label study in 17 patients with severe asthma that recorded improvements in asthma symptoms, lung function, and bronchial hyperresponsiveness (3).
Therapy of severe allergic asthma with anti-IgE therapy (omalizumab) has convincingly demonstrated that this agent can improve asthma control and decrease the rate of severe asthma exacerbations and emergency visits (49). Furthermore, it is notable that in patients with more severe disease, the effects on exacerbations can be more convincing than those on symptoms. In our study of infliximab in moderate asthma, we agree that there were trends toward improvement in morning PEF, and that these changes became more convincing with time, so that a longer term study with higher doses is rational. Finally, the measurement of cytokines, such as TNF- , in induced sputum might be a useful way to select those patients who may respond to therapy directed against TNF- , and could have utility in monitoring therapeutic responses.
Edward M. Erin,
Onn Min Kon,
Peter J. Barnes and
Trevor T. Hansel
National Heart and Lung Institute, Royal Brompton Hospital, London, United Kingdom
FOOTNOTES
Conflict of Interest Statement:E.M.E. does not have a financial relationship with a commercial entity that has an interest in the subject of this manuscript. O.M.K. does not have a financial relationship with a commercial entity that has an interest in the subject of this manuscript. P.J.B. has received funding and has served on scientific advisory boards for GlaxoSmithKline, AstraZeneca, Boehringer-Ingelheim, Novartis, Altana, Pfizer, and Millennium. T.T.H. has received research grants in 2004 to May 2006 from GlaxoSmithKline ($250,000), Novartis ($500,000), and Oxogen ($360,000).
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