Patient with polymorbid pathology. Possibilities of therapy with monoclonal antibodies

With the widespread increase in the number of patients with allergic pathology, doctors in clinical practice increasingly have to observe the simultaneous development of several nosological forms in the same patient. Frequent occurrence of a combination of lesions of the skin and respiratory tract in patients with atopy (atopic dermatitis, allergic rhinitis, and atopic bronchial asthma) is traditionally considered within the framework of comorbidity and suggests a number of therapeutic interventions given the similarity of the pathogenesis. However, phenotypic or endotypic differences exist between patients (e.g., triggers, age, persistence of manifestations, degree and type of inflammation, severity of symptoms, and response to treatment), for which it is more correct to use the term multimorbidity. The strategy of precision medicine for patients with several immune-mediated diseases should focus on identifying not only the general features of the disease, but also the pathogenetic mechanisms in the target organs. Because of these differences, the sensitivity to therapeutic interventions by target organs can vary. Herein, a clinical case of a patient with comorbid pathology ― chronic spontaneous urticaria, allergic rhinitis, and bronchial asthma ―was analyzed. Respiratory manifestations (rhinitis and asthma) were mild to severe. Chronic urticaria had the most severe disease course and resistant to antihistamines, which are considered first and second lines of drugs according to federal and international clinical guidelines that required the use of monoclonal antibodies. Anti-IgE therapy with omalizumab had a rapid and complete effect on urticaria symptoms, but respiratory symptoms were less responsive to treatment. In patients with multimorbid pathology, therapy should be individualized in terms of targeted drugs and their dosage.