Group 1 - The global anticoagulant market exceeds $20 billion, with existing anticoagulants posing additional bleeding risks while preventing thrombosis. There is room for improvement in both efficacy and safety of these drugs [1] - FXI/FXIa inhibitors are expected to become safer alternatives to current anticoagulants, as they specifically target the intrinsic coagulation pathway, potentially reducing bleeding risks while maintaining anticoagulant efficacy [1] - No FXI/FXIa inhibitors have been approved yet, but several candidates, including Novartis' abelacimab, Bayer's asundexian, and BMS/Johnson & Johnson's milvexian, are in registration clinical trials [1] Group 2 - Bayer's asundexian has shown superior efficacy in phase 3 clinical trials for secondary stroke prevention, marking it as the first FXI/FXIa inhibitor to meet key clinical endpoints [1] - FXI/FXIa inhibitors demonstrate significant safety advantages over DOACs, particularly in patients at high risk of bleeding, and are expected to challenge standard treatments in various indications [1] - FXI small nucleic acid drugs, still in early development, show promising early pharmacokinetic and pharmacodynamic data, with potential for improved patient compliance due to less frequent dosing [2]

Group 1 - The global anticoagulant market exceeds $20 billion, with existing anticoagulants posing additional bleeding risks while preventing thrombosis. There is room for improvement in both efficacy and safety of these drugs [1] - FXI/FXIa inhibitors are expected to become safer alternatives to current anticoagulants, as they specifically target the intrinsic coagulation pathway, potentially reducing bleeding risks while maintaining anticoagulation efficacy [1] - No FXI/FXIa inhibitors have been approved yet, but various drug forms, including monoclonal antibodies and small molecules, are in clinical stages, with several candidates like Novartis' abelacimab and Bayer's asundexian undergoing registration trials [1] Group 2 - Bayer's asundexian has achieved superior efficacy in phase 3 clinical trials for secondary stroke prevention, marking it as the first FXI/FXIa inhibitor to meet key clinical endpoints [2] - FXI/FXIa inhibitors demonstrate significant safety advantages over DOACs, particularly in patients with high bleeding risks, suggesting a competitive edge in these populations [2] - FXI small nucleic acid drugs, still in early development, show promising early pharmacokinetic and pharmacodynamic data, indicating effective FXI activity suppression and potential for improved patient compliance with a quarterly injection schedule [3]