A Study to Assess the Efficacy and Safety of AK002 in Subjects With Antihistamine-Resistant Chronic Urticaria

This open-label study is to assess the effects of AK002, given as monthly intravenous infusions at up to 3 mg/kg. A total of 47 patients will be enrolled across 2-4 sites. All patients enrolled in the study will receive 6 monthly infusions of AK002 and will then be followed for another 8 weeks. Some patients will have the option to receive an additional 12 months of extended dosing.