Mepolizumab for severe eosinophilic asthma: a real-world snapshot on clinical markers and timing of response.

Abstract:

:Background: Few studies have provided real-world evidence of mepolizumab efficacy and safety. We aimed to evaluate mepolizumab for severe eosinophilic asthma in daily clinical practice.Research design and methods: Patients included in the RINOVA (Interdisciplinary Network for the management of severe asthma in Veneto region, Italy) database were investigated. Blood eosinophil count, forced expiratory volume in 1 second, % of predicted (FEV1%), fractional exhaled nitric oxide (FeNO), asthma control test (ACT), oral steroid (OCS) intake, and exacerbation rate were evaluated during mepolizumab treatment.Results: 69 patients were enrolled (mean age: 55.1 years; 60.9% females). A significant improvement was detected at one month with respect to blood eosinophils (median level at baseline: 710/μl; -620/μl, p < 0,001), FEV1% (median value at baseline 87; range: 79-101; +4, p = 0.001) and ACT (median value at baseline 18; range: 14-20.5;+4, <0.001). A significant reduction of FeNO was observed six months after the treatment start, when the exacerbation rate and the mean OCS dose significantly decreased (respectively: Δ reduction -3; p < 0.001 and -5 mg; p < 0.001).Conclusions: Our study provides real-world evidence of mepolizumab safety and confirms its dramatic steroid sparing effect. The greatest clinical change (ACT and FEV1) was observed within the first month.

journal_name

Expert Rev Respir Med

authors

Caminati M,Cegolon L,Vianello A,Chieco Bianchi F,Festi G,Marchi MR,Micheletto C,Mazza F,Tognella S,Senna G

doi

10.1080/17476348.2019.1676734

subject

Has Abstract

pub_date

2019-12-01 00:00:00

pages

1205-1212

issue

12

eissn

1747-6348

issn

1747-6356

journal_volume

13

pub_type

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