Efficacy and Safety Study of BCX7353 as an Oral Treatment for the Prevention of Attacks in HAE
Efficacy and Safety Study of BCX7353 as an Oral Treatment for the Prevention of Attacks in HAE
This is a phase 3, multicenter, randomized, double-blind, placebo-controlled trial to
 evaluate the efficacy and safety of oral BCX7353 in preventing acute angioedema attacks in
 patients with Type I and Type II HAE.
Key Inclusion Criteria:

 -  A clinical diagnosis of hereditary angioedema Type 1 or Type 2, defined as having a
 C1-INH functional level and a C4 level below the lower limit of the normal (LLN)
 reference range, as assessed during the Screening period.

 -  Subject weight of ≥ 40 kg

 -  Access to and ability to use one or more acute medications approved by the relevant
 competent authority for the treatment of acute attacks of HAE

 -  Subjects must be medically appropriate for on-demand treatment as the sole medicinal
 management for their HAE during the study.

 -  Subjects must have a specified number of investigator-confirmed attacks during the
 run-in period of a maximum of 56 days from the Screening visit.

 -  Acceptable effective contraception

 -  Written informed consent

 Key Exclusion Criteria:

 -  Pregnancy or breast-feeding

 -  Any clinically significant medical condition or medical history that, in the opinion
 of the Investigator or Sponsor, would interfere with the subject's safety or ability
 to participate in the study

 -  Any laboratory parameter abnormality that, in the opinion of the Investigator, is
 clinically significant and relevant for this study

 -  Severe hypersensitivity to multiple medicinal products or severe hypersensitivity/
 anaphylaxis with unclear etiology

 -  Use of C1-INH within 14 days or use of androgens or tranexamic acid within 28 days
 prior to the Screening visit for prophylaxis of HAE attacks, or initiation of these
 drugs during the study

 -  Current participation in any other investigational drug study or received another
 investigational drug within 30 days of the Screening visit

 -  Prior enrollment in a BCX7353 study