The Role of Bruton's Tyrosine Kinase in Pathogenesis of Chronic Spontaneous Urticaria and the Prospects for the Use of New Treatment.

Chronic spontaneous urticaria is a fairly common disease with an unpredictable course, burdensome symptoms and a significant negative impact on patients` quality of life. Despite the established stepwise approach to treatment with antihistamines in standard and increased dosages, anti-IgE therapy, there remains a portion of patients with unsatisfactory control of urticaria symptoms, with the need to develop drugs that target new therapeutic targets. Mast cells, basophils and B cells are key cells involved in the pathogenesis of urticaria; activation, differentiation, proliferation, cytokine secretion and degranulation in all three types of cells is regulated via Bruton's tyrosine kinase signalling pathway through FcεRI and BCR receptors respectively. Inhibition of Bruton's tyrosine kinase is being developed as a new therapeutic strategy for chronic spontaneous urticaria. Here we present overview of the current understanding of chronic spontaneous urticarial`s pathogenesis, the role of Bruton's tyrosine kinase, the history of medical use of Bruton's tyrosine kinase inhibitors, as well as clinical data on the use of new Bruton's tyrosine kinase inhibitors in patients with chronic spontaneous urticaria who have not achieved adequate disease control with antihistamines.