Roflumilast in symptomatic chronic obstructive pulmonary disease: two randomised clinical trials.
BACKGROUND: The phosphodiesterase-4 inhibitor roflumilast can improve lung function and prevent exacerbations in certain patients with chronic obstructive pulmonary disease (COPD). We therefore investigated whether roflumilast would reduce the frequency of exacerbations requiring corticosteroids in patients with COPD.
METHODS: In two placebo-controlled, double-blind, multicentre trials (M2-124 and M2-125) with identical design that were done in two different populations in an outpatient setting, patients with COPD older than 40 years, with severe airflow limitation, bronchitic symptoms, and a history of exacerbations were randomly assigned to oral roflumilast (500 microg once per day) or placebo for 52 weeks. Primary endpoints were change in prebronchodilator forced expiratory volume in 1 s (FEV(1)) and the rate of exacerbations that were moderate (glucocorticosteroid-treated) or severe. Analysis was by intention to treat. The trials are registered with ClinicalTrials.gov, number NCT00297102 for M2-124, and NCT00297115 for M2-125.
FINDINGS: Patients were assigned to treatment, stratified according to smoking status and treatment with longacting beta(2) agonists, and given roflumilast (n=1537) or placebo (n=1554). In both studies, the prespecified primary endpoints were achieved and were similar in magnitude. In a pooled analysis, prebronchodilator FEV(1) increased by 48 mL with roflumilast compared with placebo (p
INTERPRETATION: Since different subsets of patients exist within the broad spectrum of COPD, targeted specific therapies could improve disease management. This possibility should be explored further in prospective studies.
Published In/Presented At
Calverley, P. M., Rabe, K. F., Goehring, U. M., Kristiansen, S., Fabbri, L. M., Martinez, F. J., & M2-124 and M2-125 study groups (2009). Roflumilast in symptomatic chronic obstructive pulmonary disease: two randomised clinical trials. Lancet (London, England), 374(9691), 685–694. https://doi.org/10.1016/S0140-6736(09)61255-1
Medicine and Health Sciences
Department of Medicine