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Immunotherapy with grass pollen tablets reduces medication dispensing for allergic rhinitis and asthma: a retrospective database study in France.

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Published:27th Dec 2018
Author: Devillier P, Molimard M, Ansolabehere X, Bardoulat I, Coulombel N, Maurel F et al.
Source: Allergy
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Ref.:Allergy. 2018.

Background :
Moderate?to?severe allergic rhinitis (AR) may increase the risk of developing or worsening asthma, whereas treatment of AR with subcutaneously or sublingual allergen immunotherapy (SLIT) may slow this progression.

Methods : In a retrospective real?world analysis, prescription fulfilment data were gathered from French retail pharmacies between March 1st, 2012, and December 31st, 2016. Using linear regression analyses, patients having received at least two prescriptions of grass pollen SLIT tablets over at least two successive years were compared with control patients having received symptomatic medications only.

Results : 1,099 SLIT patients and 27,475 control patients were included in the main analysis. With regard to symptomatic AR medication dispensing, we observed a 50% decrease in the pre?index/follow?up ratio in the SLIT group, a 30% increase in the control group without age matching (p<0.0001 vs. SLIT), and a 20% increase in the control group with age matching (p<0.0001 vs. SLIT). During the follow?up, 11 (1.8%) and 782 (5.3%) patients initiated asthma treatment in the SLIT and control groups, respectively. The relative risk of medication dispensing for new asthma was lower in the SLIT group (by 62.5% [29.1%;80.1%] without age matching (p=0.0025), and by 63.7% [31.5%;80.7%] with age matching (p=0.0018)). SLIT was also associated with slower progression of asthma medication dispensing during the follow?up period, relative to the control group (regression coefficient: ?0.58[?0.74;?0.42] without age matching (p<0.0001) and ?0.61 [?0.76;?0.46] with age matching (p<0.0001)).

Conclusion : Prescription of grass pollen SLIT tablets reduced the dispensing of AR and asthma medications in real life.


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