Hemophilia A, Hemophilia B

Inclusion Criteria

- Males with severe congenital Hemophilia A or B defined as <1% FVIII or Factor IX (FIX) concentration by measurement at the time of screening or from reliable prior documentation
 - For subjects in Cohorts I-IV, I-SC1 and I-SC2; If history of inhibitors is evident, inhibitor titer of ≥5 Bethesda Units (BU) at screening or prior to screening at any time from medical records.
 - Age: 18 to 65 years of age at screening
 - Body mass index (BMI): 18 to 29.9 kg/m²

Exclusion Criteria

- Subjects with known bleeding disorders (such as von Willebrand factor [vWF] deficiency, FXI deficiency, platelet disorders, or known acquired or inherited thrombophilia etc.) other than congenital Hemophilia A or B with or without inhibitors
 - History of angina pectoris or treatment for angina pectoris
 - History of coronary and/or peripheral atherosclerotic disease, congestive heart failure, disseminated intravascular coagulopathy, or stage 2 hypertension defined as systolic blood pressure (SBP) ≥160 mmHg or diastolic blood pressure (DBP) ≥100 mmHg even if controlled
 - History of thrombophlebitis, venous / arterial thromboembolic diseases (particularly deep vein thrombosis, pulmonary embolism, stroke, myocardial infarction, cerebrovascular accident, ischemic heart disease, transient ischemic attack)
 - Known or suspected hypersensitivity of the immune system, history of anaphylactic reaction, known (clinically relevant) allergies, non-allergic drug reactions, or multiple drug allergies