Developments Zura Bio launches global Phase 2 study of tibulizumab in HS Zura Bio (NASDAQ:ZURA) announced that it has launched a global Phase 2 study—TibuSHIELD—to evaluate tibulizumab in 180 adults with moderate to severe hidradenitis suppurativa (HS) across Canada, the U.S. and Europe... May 21, 2025