Asthma diagnosis and treatmentCharacterization of within-subject responses to fluticasone and montelukast in childhood asthma
Section snippets
Methods
Details of study design and analyses have been reported.14 Children (n = 144) 6 to 17 years of age with mild-to-moderate asthma were enrolled. They had asthma symptoms or rescue bronchodilator use on average of 3 or more days per week during the previous 4 weeks and improvement in FEV1 of 12% or greater after maximal bronchodilation or methacholine PC20 of 12.5 mg/mL or less. They had no corticosteroid treatment within 4 weeks, no leukotriene-modifying agents within 2 weeks, and no history of
Study cohort
Of 144 participants enrolled in the study, 126 successfully completed both treatment arms for the primary end point, with 33% in the youngest age group (6-9 years), 48% minorities, and 41% female patients (see Table E1 in the Journal's Online Repository at www.mosby.com/jaci).14 Seventeen (12%) participants did not complete the study (Fig 1); 12 had asthma exacerbations requiring treatment with systemic corticosteroids, and these were considered treatment failures. Two of these treatment
Discussion
In this study we found wide variability in the pulmonary responses to 2 asthma control medications in a population of children with mild-to-moderate persistent asthma but also significant concordance of response (Fig 2, A); that is, a large proportion of the cohort had similar responses to each of the 2 medications. We also identified a group of children with increased markers associated with allergic airway inflammation who have a significantly greater response to fluticasone than to
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Cited by (0)
Writing Committee: S. Szefler (Chair), B. Phillips, F. Martinez, V. Chinchilli, R. Lemanske, R. Strunk, R. Zeiger, G. Larsen, and J. Spahn.
Supported by grants 5U10HL064287, 5U10HL064288, 5U10HL064295, 5U10HL064307, 5U10HL064305, and 5U10HL064313 from the National Heart, Lung, and Blood Institute. This study was carried out in part in the General Clinical Research Centers at Washington University School of Medicine (M01 RR00036) and National Jewish Medical and Research Center (M01 RR00051).
Potential conflicts of interest: Stanley J. Szefler has consultant arrangements with AstraZeneca, GlaxoSmithKline, Aventis, and Merck, and has received grants/research support from National Institutes of Health (NIH)/National Heart, Lung, and Blood Institute (NHLBI) Childhood Asthma Management Program, NIH/NHLBI Inflammation, Airway Reactivity and Asthma, NIH/National Institute of Child Health and Development (NICHD) Pediatric Pharmacology Research Unit Network, NHLBI Childhood Asthma Research and Education Network, NIH/NHLBI Asthma Clinical Research Network, NIH/National Institute of Allergy and Infectious Diseases (NIAID) Inner City Asthma Consortium, Ross Pharmaceuticals, and AstraZeneca; Fernando D. Martinez serves on the Merck Advisory Board and has received lecture fees from GlaxoSmithKline and Merck; Vernon M. Chinchilli has consultant arrangements with Wyeth Pharmaceutical, Bristol-Myers Squibb Pharmaceutical, and Procter & Gamble Pharmaceutical, has a provisional patent application for “Genetic predictor of efficacy of anti-asthmatic agent for improving pulmonary function,” and is the principal investigator for a Childhood Asthma Research and Education Network Data Coordinating Center, funded by the NHLBI; Robert Lemanske, Jr, has consultant arrangements with Aventis and AstraZeneca, has a patent pending on β receptor haplotypes and their relationship to responses to asthma medications, and is on the Speakers' Bureau of Aventis, AstraZeneca, Merck, GlaxoSmithKline, Schering, and Novartis; Robert S. Zeiger has consultant arrangements with GlaxoSmithKline, Merck, Astra, and Novartis/Genentech; Gary L. Larsen is an Advair Pediatric Specialist for GlaxoSmithKline and has received grants/research support from NIH; Joseph D. Spahn has consultant arrangements with, has received grants/research support from, and is on the Speakers' Bureau of GlaxoSmithKline and AstraZeneca, as well as receiving grants/research support from Merck; Leonard B. Bacharier has received grants/research support from NIH/NHLBI and is on the Speakers' Bureau of GlaxoSmithKline, Merck, and Genentech/Novartis; Theresa Guilbert has consultant arrangements with, has received grants/research support from, and is on the Speakers' Bureau of GlaxoSmithKline and is also on the Speakers' Bureau of AstraZeneca; Wayne J. Morgan has consultant arrangements with Genentech; Christine A. Sorkness has consultant arrangements with and has received grants/research support from GlaxoSmithKline, as well as being on the Speakers' Bureau for GlaxoSmithKline, AstraZeneca, and Genentech/Novartis; and Lynn M. Taussig has consultant arrangements with Glaxo.