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Nanofiltered C1-Esterase Inhibitor for the Acute Management and Prevention of Hereditary Angioedema Attacks due to C1-Inhibitor Deficiency in Children.

Authors :
Lumry, William
Manning, Michael E.
Hurewitz, David S.
Davis-Lorton, Mark
Fitts, David
Kalfus, Ira N.
Uknis, Marc E.
Source :
Journal of Pediatrics; May2013, Vol. 162 Issue 5, p1017-1022.e2, 0p
Publication Year :
2013

Abstract

Objectives: To evaluate the use of Cinryze (nanofiltered C1-esterase inhibitor [C1 INH-nf]) for the acute management and prevention of hereditary angioedema attacks in the subgroup of children and adolescents who participated in 2 placebo-controlled and 2 open-label extension studies. Study design: In the acute-attack treatment studies, the efficacy of 1000 U of C1 INH-nf (with an additional 1000 U given 1 hour later if needed) was assessed based on the time to the start of symptomatic relief and the proportion of patients experiencing relief within 4 hours of therapy. In the prophylaxis studies, C1 INH-nf 1000 U was given twice weekly, and efficacy was based on the frequency of attacks. Results: Across 4 studies, 46 children received a total of 2237 C1 INH-nf infusions. The median time to the start of unequivocal relief in the acute-attack treatment study (n = 12) was 30 minutes with C1 INH-nf, compared with 2 hours for placebo. In the open-label extension (n = 22), clinical relief began within 4 hours of therapy in 89% of attacks. In the prophylaxis study (n = 4), the number of attacks was reduced by approximately 2-fold with C1 INH-nf compared with placebo. In the prophylaxis open-label extension (n = 23), the median monthly attack rate decreased from 3.0 before treatment to 0.39 with C1 INH-nf use. Conclusion: In children, C1 INH-nf was well tolerated, provided relief from symptoms of hereditary angioedema attacks, and reduced the rate of attacks. [ABSTRACT FROM AUTHOR]

Details

Language :
English
ISSN :
00223476
Volume :
162
Issue :
5
Database :
Supplemental Index
Journal :
Journal of Pediatrics
Publication Type :
Academic Journal
Accession number :
87398618
Full Text :
https://doi.org/10.1016/j.jpeds.2012.11.030