Systematic literature review of asthma biologic self-administration enhanced by a patient perspective

Background

Several biologics for the treatment of severe asthma are available as self-administration devices.

Objective

We performed a systematic literature review to understand the use, benefits, and challenges of these self-administration devices.

Methods

Electronic databases and conference proceedings were searched using terms for asthma, biologic treatment, and at-home/self-administration (GSK study 213094). Publications were scanned for relevance using prespecified Population, Intervention, Comparison, Outcomes, Study Design (PICOS) criteria. Data on efficacy, safety, patient experience, and economic outcomes were extracted; study quality was assessed. A firsthand patient perspective was obtained.

Results

Thirty-five of 504 records met the inclusion criteria. Across four phase 3 studies, ≥95% of biologic self-administrations were successful on the basis of predefined criteria. At-home self-administration was preferred over in-clinic administration by 43-96% of patients across 5 studies. Most patients (≥89%) in two phase 3 studies reported completing self-administration easily without repeated reference to instructions; high proportions of patients (≥98%) were confident in their ability to self-administer their biologic, and ≥96% rated it as extremely, very or moderately easy to self-administer. Across 16 studies reporting efficacy data, there was evidence of reduced blood eosinophil counts and improved asthma control with biologic self-administration, with improved health-related quality of life shown across 6 studies. Economic outcomes data were limited. From a patient perspective, autonomy is the major benefit of self-administration.

Conclusion

Although more evidence is needed, this systematic literature review provides consistent evidence of high injection success rates and, supported by a patient perspective, preference for self-administration of biologics among patients with severe asthma.