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Open Access Safety of a C1-inhibitor concentrate in pregnant women with hereditary angioedema

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Background:

Increased estrogen levels during pregnancy can exacerbate hereditary angioedema (HAE), yet disease and treatment ramifications remain poorly studied in pregnant women.

Objective:

Data from the international Berinert Patient Registry were used to evaluate outcomes of pregnancies exposed to plasma-derived, pasteurized, nanofiltered C1-inhibitor concentrate (pnfC1-INH) during routine HAE management.

Methods:

This observational registry, conducted between 2010 and 2014 at 30 U.S. and 7 European sites, gathered data on 318 subjects and 15,000 pnfC1-INH infusions. Whenever possible, the subjects who used pnfC1-INH during pregnancy were followed up to term to assess neonatal outcomes and to collect maternal adverse events (AE) that occurred up to 1 month after pnfC1-INH administration.

Results:

The registry data base included 11 pregnancies in 10 subjects who used pnfC1-INH for HAE attack treatment and/or prophylaxis (>261 doses during pregnancy). Eight pregnancies concluded in the birth of a healthy baby. Of the remaining three pregnancies: one was voluntarily terminated at 9 weeks of gestation; a second ended as a first-trimester spontaneous abortion 1 week after the subject's most recent pnfC1-INH infusion and was considered unrelated to pnf-C1INH treatment; and the third occurred in a subject who exited the registry approximately 2 months before her due date, with no further follow up. As assessed for 30 days after each pnfC1-INH infusion, there were no AEs that were considered related to pnfC1-INH therapy.

Conclusion:

Administration of pnfC1-INH during pregnancy was generally safe and not associated with any treatment-related AEs. In all registry pregnancies followed up to term, the birth of a healthy baby was reported.
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Keywords: Hereditary angioedema; neonatal outcomes; plasma-derived C1-inhibitor; pregnancy; registry; safety; women

Document Type: Research Article

Publication date: 2017-05-01

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  • Allergy and Asthma Proceedings is a peer reviewed publication dedicated to distributing timely scientific research regarding advancements in the knowledge and practice of allergy, asthma and immunology. Its primary readership consists of allergists and pulmonologists.

    The goal of the Proceedings is to publish articles with a predominantly clinical focus which directly impact quality of care for patients with allergic disease and asthma.

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    The journal is indexed in Thomson Reuters Web of Science and Science Citation Index Expanded, plus the National Library of Medicine's PubMed service.
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