An observational study in Hemophilia B and Allergic Reactions, sponsored by Wyeth is now a wholly owned subsidiary of Pfizer. Completed at 38 sites in 9 countries. Per ClinicalTrials.gov, last updated 2007-12-05.
Sponsored by Wyeth is now a wholly owned subsidiary of Pfizer · Observational
Retrospective, multicenter study in patients with hemophilia B. This study will be placed at 20 to 50 hemophilia treatment centers in North America and the EU, and is designed to estimate the frequency of Class II and III allergic reactions in association with the administration of any FIX concentrate.
Following informed consent and eligibility, historical patient information including demographics, allergy history, hemophilia history, frequency and severity of allergic reaction(s), number of exposure days with products causing allergic reactions, exposure days to blood products including FIX concentrates, treatment for allergic reaction(s), outcome of event(s), any other adverse event(s) occuring within 48 hours of onset of allergic reaction(s), rechallenge and outcome, switch to another FIX product (if applicable) and outcome, current status of patient, and results of any special studies (eg, skin or RAST testing, alloantibody analyses, ect) will be collected.
866 studies on the registry are indexed under Hemophilia A; 137 are open to participants now.
This study's enrollment of 166 is above the median of 80 across 314 observational studies indexed under Hemophilia A.
Browse Hemophilia A studies →Wyeth is now a wholly owned subsidiary of Pfizer is the lead sponsor of 472 studies on the registry; none are open to participants now.
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This study is completed, as verified in Dec 2007. You cannot join it, but the record below documents what was studied.
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Wyeth is now a wholly owned subsidiary of Pfizer