Article

Long-Term Efficacy of Sublingual Immunotherapy in Patients With Perennial Rhinitis

Istanbul University, ─░stanbul, Istanbul, Turkey
The Laryngoscope (Impact Factor: 2.03). 07/2007; 117(6):965-9. DOI: 10.1097/MLG.0b013e31804f8141
Source: PubMed

ABSTRACT Sublingual immunotherapy has a documented clinical efficacy, but only a few long-term studies have been performed in people with perennial rhinitis.
The purpose of this study was to evaluate the long-term efficacy of sublingual immunotherapy.
One hundred thirty-seven patients with allergies to house dust mites were treated with sublingual house dust-mite-specific immunotherapy for 2 or 3 years and were also observed for 3 years after discontinuation of the treatment. The patients were divided into 2 groups: group A (67 patients) received active treatment for 2 years and then 1 year for placebo, and group B (70 patients) received active treatment for 3 years. The success of the treatment was evaluated with the symptom score, skin prick test results, and the nasal allergen challenge score.
According to our study results, we found a greater improvement in the 3 years of sublingual immunotherapy compared with the 2 years of sublingual immunotherapy when we looked at the comparative results of the total 6 years.
We suggest 3 years of sublingual immunotherapy for patients with perennial allergic rhinitis who require immunotherapy and do not accept the subcutaneous route of allergen administration.

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