Body mass index and response to asthma therapy: fluticasone propionate/salmeterol versus montelukast

CA Camargo Jr, LP Boulet, ER Sutherland… - Journal of …, 2010 - Taylor & Francis
CA Camargo Jr, LP Boulet, ER Sutherland, WW Busse, SW Yancey, AH Emmett, HG Ortega
Journal of Asthma, 2010Taylor & Francis
We studied the relationship between body mass index (BMI) on responses to asthma
therapy using a retrospective analysis of four previously reported clinical trials. Fluticasone
propionate (FP)/salmeterol via Diskus 100/50 μg twice daily and montelukast (MON) 10 mg
daily were compared. BMI was classified as underweight (less than 20 kg/m2), normal (20–
24.9 kg/m2), overweight (25–29.9 kg/m2), obese-1 (30–34.9 kg/m2), obese-2 (35–39.9
kg/m2), or obese-3 (at least 40 kg/m2). Outcomes assessed included forced expiratory …
We studied the relationship between body mass index (BMI) on responses to asthma therapy using a retrospective analysis of four previously reported clinical trials. Fluticasone propionate (FP)/salmeterol via Diskus 100/50 μg twice daily and montelukast (MON) 10 mg daily were compared. BMI was classified as underweight (less than 20 kg/m2), normal (20–24.9 kg/m2), overweight (25–29.9 kg/m2), obese-1 (30–34.9 kg/m2), obese-2 (35–39.9 kg/m2), or obese-3 (at least 40 kg/m2). Outcomes assessed included forced expiratory volume in one second (FEV1), asthma symptom score, and albuterol use. FP/salmeterol produced greater improvements compared to MON in each of the asthma outcomes studied over the entire BMI range at the week-12 endpoint, with statistically significant differences noted among normal, overweight, obese-1, and obese-3 subjects. The within-treatment responses to FP/salmeterol across BMI ranges at the week-12 endpoint was statistically significantly greater in normal compared to obese-3 for FEV1 and albuterol use, and in overweight compared to the obese-3 for each outcome studied. The within-treatment comparisons of MON across BMI ranges were significant for albuterol use in normal and underweight compared to obese-3 at the week-12 endpoint. Compared to subjects with normal BMI, the onset to peak FEV1 may require longer treatment exposure in the very obese. Treatment responses to FP/salmeterol were consistently greater compared to MON and persisted at higher BMI.
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