Real-World Experience on Omalizumab Treatment for Patients with Normocomplementemic Urticarial Vasculitis

BACKGROUND: Urticarial vasculitis is a small vessel vasculitis characterized by long-lasting wheals. It was suggested omalizumab is well tolerated and effective in patients with hypocomplementaemic urticarial vasculitis. OBJECTIVE: To evaluate the clinical response and safety of omalizumab for treating patients with normocomplementaemic urticarial vasculitis (NUV) in real-world setting. METHODS: We collected data from a single-center. This study included patients with NUV who was received omalizumab therapy. During a 24-week study period, the clinical efficacy was evaluated by patient’s self-assessment instrument urticarial vasculitis activity score and Dermatology Life Quality Index. RESULTS: Five patients with NUV were enrolled. Three patients received 6 doses of 150 or 300 mg omalizumab subcutaneously every 4 weeks. At 24-week follow-up, it was revealed improvement of clinical manifestations and reduction of urticarial vasculitis activity score and Dermatology Life Quality Index. At 24-week visit, mild wheals recurred in one patient who was only administrated with omalizumab for 4 times. One patient did not response to omalizumab therapy. No adverse events were recorded in the 5 patients. CONCLUSION: Omalizumab may be a potential choice in the treatment of patients with NUV in the real-world life.