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House dust mite sublingual immunotherapy is safe in patients with mild-to-moderate, persistent asthma: a clinical trial.

Allergy; 71(2): 249-57, 2016 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-26465232

BACKGROUND:

The safety of allergen immunotherapy (AIT) in asthma has not always been sufficiently documented; accordingly, fear of asthma exacerbations has made physicians somewhat reluctant to prescribe AIT in this context. In a double-blind, placebo-controlled, randomized clinical trial, house dust mite (HDM) sublingual AIT was found to be efficacious in moderate, persistent asthma. The trial's safety results are now reported in detail.

METHODS:

Asthmatic adults were randomized 2 : 1 to twelve months of daily treatment with a sublingual solution of Dermatophagoides pteronyssinus and Dermatophagoides farinae extracts or a placebo. Adverse events (AEs) at least possibly related to the investigational product were classified by the investigators as adverse drug reactions (ADRs).

RESULTS:

Overall, the patients in the safety analysis set (n = 484; active treatment: n = 322; placebo: n = 162) had mostly well-controlled, persistent asthma [mild in 290 patients (59.9%), moderate in 183 (37.8%) and severe in 11 (2.3%)]. No treatment-related serious AEs were reported. A total of 87.0% and 75.9% of the patients in the active and placebo groups, respectively, experienced at least one AE (mostly mild), and 78.9% and 48.1% experienced an ADR (mostly mild or moderate oral reactions). The incidence of asthma exacerbations (symptoms requiring a short course of oral corticosteroids) during the study was similar in the active treatment group (3.7%) and the placebo group (4.3%). There were no significant intergroup differences or intragroup changes over time in respiratory AEs, lung function or asthma-related quality of life.

CONCLUSIONS:

HDM sublingual AIT was safe and well tolerated in adult patients with mild-to-moderate, persistent asthma (ClinicalTrials.gov: NCT00660452).