NEW YORK--(BUSINESS WIRE)--Pfizer Inc. (NYSE: PFE) today presented results from the Phase 3 BASIS study (NCT03938792) evaluating HYMPAVZI® (marstacimab) for adults and adolescents living with hemophilia A or B with inhibitors. The results demonstrated the superiority of HYMPAVZI in improving key bleeding outcomes compared to on-demand (OD) treatment with bypassing agents. HYMPAVZI was administered with a straightforward, once-weekly subcutaneous injection requiring minimal preparation and no tr. ...