A Study to Evaluate the Safety and Pharmacokinetics of Two Formulations of C1-esterase Inhibitor

Inclusion Criteria: * Healthy subjects without clinically significant medical conditions or laboratory abnormalities * Male or female subjects aged 18 to 45 years inclusive, at the time of informed consent * Non-smokers * Body mass index of 18.0 to 29.0 kg/m2 inclusive Exclusion Criteria: * Previous history of clinically significant arterial or venous thrombosis, current history of a clinically significant pro-thrombotic risk, or a clinically significant abnormality on laboratory thrombotic screen at the screening visit. * Known or suspected hypersensitivity to the investigational medicinal product (IMP), or to any excipients of the IMP. * Female subjects who started taking or changed dose of any hormonal contraceptive regimen or hormone replacement therapy (ie, estrogen/progesterone containing products) within 3 months before the screening visit. * Alcohol, drug, or medication abuse within one year before the study. * Female subjects of childbearing potential (eg, not post-menopausal) either not using, or not willing to use, a medically reliable method of contraception for the entire duration of the study, or have a vasectomized partner, or not sexually abstinent for the entire duration of the study, or not surgically sterile. * Participation in another clinical study (or use of another IMP) within 30 days (or 5 times the half-life, whichever is longer) before, or during, the study.