Hereditary Angioedema Clinical Trial
Official title:
LEVP2005-1/Part B: A Double-blind, Placebo-Controlled, Clinical Study to Investigate the Efficacy and Safety of Purified C1 Esterase Inhibitor (Human) as Prophylactic Treatment to Prevent HAE Attacks
The study objective was to determine the safety and efficacy of C1INH-nf for the prevention of acute HAE attacks.
Subjects were given diary cards and instructed to document all HAE attacks on a daily basis. Subjects evaluated their symptoms over the previous 24 hours, noting the severity and duration of swelling at each of 5 locations (abdominal, genitourinary, facial, respiratory [including laryngeal], and/or extremity). The study design also allowed for administration of open-label C1INH-nf (1,000 U of C1INH-nf administered IV [repeated after 60 minutes, if necessary] for treatment of laryngeal angioedema or if deemed necessary by the investigator; 1,000 U of C1INH-nf administered IV [single dose] prior to emergency surgical procedures). A total of 26 subjects were enrolled in the study. One subject received open-label C1INH-nf but withdrew prior to randomization. Another subject was randomized but withdrew prior to receiving study drug. Twenty-four (24) subjects were randomized and treated with blinded study drug. In total, 25 subjects received at least 1 dose of study drug and were analyzed for safety; all 25 subjects were exposed to C1INH-nf and 23 subjects were exposed to placebo. ;
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