Russian experience of refractory chronic urticaria treatment with omalizumab

Abstract

Background. To study the efficacy and safety of omalizumab in patients with chronic urticaria, refractory to antihistamines in clinical practice. Methods. In this retrospective clinical analysis, we assessed effectiveness, time to relief of symptoms, dose change after omalizumab administration, and safety in 17 CU patients, 16 with chronic spontaneous urticaria (CSU), 1 with different forms of chronic inducible urticaria (CindU) and 4 with both. Results. Treatment with omalizumab showed excellent effect in 70,6%, significant - in 17,7%, no effect - in 11,7% of CU patients. Eight patients marked effect for 24 hours, 2 - within 2-3 days, 2 - during 2 weeks, 1 - 4 weeks, and 2 patients - for 8 weeks. Eleven patients were receiving omalizumab 300 mg once per 4 weeks, one patient - 150 mg, 4 patients 2 injections of 300 mg, followed by 150 mg of 2, one patient had started treatment with a dose of 150 mg, continued treatment with omalizumab 300 mg. Omalizumab was safe. There was no influence of baseline total IgE levels and the results of test with autosera on the efficacy of omalizumab treatment. Conclusion. Our observation of patients with chronic spontaneous urticaria, with the concomitant or separate physical (induced) hives can resume high efficacy and safety of omalizumab treatment which can be recommended for CU patients, torpid to the first and secondline therapy.