Efficacy of dupilumab in real practice in the treatment of severe forms of asthma and atopic dermatitis (comparative retrospective study)

Background. Dupilumab, a fully human monoclonal antibody directed against the common alpha-subunit of interleukin (IL)-4 receptors and blocking signaling from both IL-4 and IL-13, may be recommended for the treatment of moderate to severe atopic dermatitis (AD) and bronchial asthma (BA). Aim. To perform a comparative assessment of the effectiveness of maintenance therapy with dupilumab in patients with severe BA as the main indication for genetically engineered biological drugs and in patients with severe asthma with concomitant severe AD as the indication for targeted therapy. Materials and methods. A 6-month retrospective comparative study was performed at the specialized reference center for allergology and immunology. The study included 115 adult patients of both sexes treated with dupilumab for uncontrolled severe asthma as the main indication for targeted therapy (BA group; n=65) or for a combination of severe uncontrolled asthma and severe AD (BAAD; n=50). Dupilumab was administered subcutaneously for 6 months. The first dose was 600 mg once and then 300 mg Q2W. Evaluation of the effectiveness of dupilumab therapy at 6 months of treatment in both groups included achieving asthma control (ACT, ACQ5), improving pulmonary function test, reducing the risk of exacerbations and the need for systemic glucocorticosteroids (SGCS), improving quality of life (AQLQ), change of biomarkers (FeNO, eosinophil count) and the course of comorbid diseases, including improvement in the AD (SCORAD, EASI) and rhinosinusitis polyposa (SNOT-22). Results and conclusion. During dupilumab therapy, in a significant proportion of patients, regardless of the presence or absence of other T2-associated diseases (e.g., AD or rhinosinusitis polyposa), an improvement in asthma was demonstrated as early as in the first 6 months of treatment with dupilumab in all recommended domains for assessing the response to targeted therapy: improving asthma control and respiratory function, reducing the frequency of moderate and severe exacerbations associated with the use of SGCS and/or hospitalization, a positive effect on the quality of life and the comorbid diseases, as well as a cumulative reduction in the need for SGCS.