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Safety and immunological changes during sublingual immunotherapy with standardized quality grass all

 

 

 

J Investig Allergol Clin Immunol. 2006;16(3):162-8.

 

Safety and immunological changes during sublingual immunotherapy with standardized quality grass allergen tablets.

 

Malling HJ, Lund L, Ipsen H, Poulsen L.

 

Allergy Clinic, National University Hospital, Copenhagen, Denmark. This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Immunotherapy is the only treatment for allergy that has the potential to alter the natural course of the disease. Sublingual immunotherapy for grass pollen-induced rhinoconjunctivitis has been developed to make immunotherapy available to a broader group of allergic patients. Here, a safe dose range and the safety during daily sublingual administration were investigated for a new tablet-based sublingual immunotherapy for grass pollen allergy. Simultaneously, immunological changes were monitored. A randomized, double-blind, placebo-controlled phase I trial was undertaken, with stepwise dose-escalation during the dose-finding period, and afterwards with daily dosing 8 weeks prior to and 15 weeks during the grass pollen season (2500, 25000, or 75000 standardized quality tablet [SQ-T] units, or placebo). Fifty-two participants with grass pollen-induced rhinoconjunctivitis and a positive skin prick test and specific IgE to Phleum pratense entered the trial. During the daily-dose treatment periods, 67% of the participants reported adverse events. The most frequent were itching in the mouth, eyes, or throat, and rhinitis, and most were mild and resolved within 1 day. Two participants withdrew due to adverse events (sting and blisters in the mouth and itching in the mouth). Time- and dose-dependent increases of P pratense-specific IgG, IgA, IgE, and IgE-competing components were found in serum during the first 8 weeks of daily dosing, indicating that the treatment had a significant allergen-specific effect on the immune system. In conclusion, the grass allergen tablet, administered in a dose of 75000 SQ-T once daily, was well tolerated and displayed systemic immunogenicity.

 

PMID: 16784009 [PubMed - in process]

 

Full Article Available Online

 


 

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