Direct comparison between continuous and coseasonal regimen for sublingual immunotherapy in children with grass allergy: A randomized controlled study
Article first published online: 19 SEP 2011
© 2011 John Wiley & Sons A/S
Pediatric Allergy and Immunology
Volume 22, Issue 8, pages 803–807, December 2011
How to Cite
Pajno, G. B., Caminiti, L., Crisafulli, G., Vita, D., Valenzise, M., De Luca, R. and Passalacqua, G. (2011), Direct comparison between continuous and coseasonal regimen for sublingual immunotherapy in children with grass allergy: A randomized controlled study. Pediatric Allergy and Immunology, 22: 803–807. doi: 10.1111/j.1399-3038.2011.01196.x
- Issue published online: 29 NOV 2011
- Article first published online: 19 SEP 2011
- Accepted for publication 4 June 2011
- continuous regimen;
- coseasonal regimen;
- grass pollen;
- respiratory allergy;
- sublingual immunotherapy
To cite this article: Pajno GB, Caminiti L, Crisafulli G, Vita D, Valenzise M, De Luca R, Passalacqua G. Direct comparison between continuous and coseasonal regimen for sublingual immunotherapy in children with grass allergy: A randomized controlled study. Pediatr Allergy Immunol 2011: 22: 803–807.
Background: Pre-seasonal, pre-coseasonal and continuous regimens of immunotherapy have been proposed, but their efficacy was never compared. This phase IV open study was designed to compare the clinical efficacy of a continuous and a coseasonal sublingual immunotherapy (SLIT) for grass allergy over 3 years.
Methods: Children with rhinitis/asthma because of grass were randomized to SLIT given continuously (all year long) or coseasonally. The treatment started in October 2005 in the continuous SLIT group and in March 2006 in the coseasonal group Diary cards for clinical symptoms (from 0 = none to 3 = severe), and drug intake were recorded form March to June in 2005 (baseline), 2006 2007, and 2008. Specific IgE and IgG4 were evaluated every year.
Results: Eighty children (age range 8–16) were randomized and 72 completed the study. In the first year, the symptom + medication score improved by 44% in the continuous group and by 20% in the coseasonal group (p = 0.04). Symptoms, chest symptoms, and drug intake separately showed a greater decrease vs. baseline in the continuous group. In the second year, the global score decreased in both groups with no significant difference, whereas symptom score decreased more in the continuous group. In the 3rd year, there was no difference in clinical parameters between the two groups. Specific IgG4 were significantly higher vs. baseline since the 1st year in the continuous group and since the 2nd in the coseasonal group.
Conclusion: In grass pollen allergy, the continuous regimen performs better than the coseasonal in the first season, whereas in the subsequent years, the two regimens are nearly equivalent.