Kiniksa Pharmaceuticals International, plc, a biopharmaceutical company, developing and commercializing novel therapies for diseases with unmet need and focuses on cardiovascular indications worldwide. Its product candidates include ARCALYST, an interleukin-1alpha and interleukin-1beta, for the treatment of recurrent pericarditis, which is an inflammatory cardiovascular disease; Vixarelimab, a monoclonal antibody, that is in Phase 2b clinical trial for the treatment of prurigo nodularis, a chronic inflammatory skin condition; and KPL-387, an investigational, that is in Phase 2/3 clinical trial for human immunoglobulin G2 monoclonal antibody that binds human interleukin-1 receptor 1, inhibiting IL-1a, IL-1ß-mediated signaling for the treatment of advance recurrent pericarditis by providing the added convenience of monthly subcutaneous dosing with a liquid formulation. Its preclinical products include KPL-116, a Fc-modified immunoglobulin G2 monoclonal antibody. The company was formerly known as Kiniksa Pharmaceuticals, Ltd and changed its name tpKiniksa Pharmaceuticals International, plc in June 2024.