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Claes-Göran Löfdahl a University Hospital, Lund, Sweden, b Department of Pulmonary and Immunology, Merck
Research Laboratories, Rahway, NJ 07065, USA, c Department of Biostatistic and Research Data System,
Merck Research Laboratories, d Brigham
and Women's Hospital, Boston, MA, USA, e Allergy Associate PC
Research Center, Portland, OR, USA, f Allergy and Asthma Centers of
Charleston, North Charleston, SC, USA, g Arnaud de Vilenueve Hospital, Montpellier, France
Correspondence to: T F Reiss Theodore_Reiss{at}Merck.com
Objective:
To determine the ability of montelukast, a leukotriene receptor antagonist, to allow tapering of inhaled corticosteroids in clinically stable asthmatic patients.
Design:
Double blind, randomised, placebo controlled, parallel group study. After a single blind placebo run in period, during which (at most) two inhaled corticosteroids dose decreases occurred, qualifying, clinically stable patients were allocated randomly to receive montelukast (10 mg tablet) or matching placebo once
daily at bedtime for up to 12 weeks.
Setting:
23 academic asthma centres in United States, Canada, and Europe.
Participants:
226 clinically stable patients with
chronic asthma receiving high doses of inhaled corticosteroids (113 randomised to montelukast and 113 to placebo).
Interventions:
Every 2 weeks, the inhaled
corticosteroids dose was tapered, maintained, or increased (rescue)
based on a standardised clinical score.
Main outcome measures:
Last tolerated dose of inhaled corticosteroids.
Results:
Compared with placebo, montelukast allowed significant (P=0.046) reduction in the inhaled corticosteroid dose
(montelukast 47% v placebo 30%; least square mean
difference 17.6%, 95% confidence interval 0.3 to 34.8). Fewer
patients on montelukast (18 (16%) v 34 (30%) placebo,
P=0.01) required discontinuation because of failed rescue.
Conclusions:
Montelukast reduces the need for inhaled
corticosteroids among patients requiring moderate to high doses of
corticosteroid to maintain asthma control.
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