Last week, Celltrion USA announced it had submitted a BLA for CT-P39, a biosimilar to XOLAIR (omalizumab). Phase 3 studies demonstrated that in patients with chronic spontaneous urticaria, CT-P39 and reference product XOLAIR (omalizumab) had comparable efficacy and safety. XOLAIR (omalizumab) is an injectable biologic that is approved in the…