The FDA reports for 2007-2008 were queried for new adverse reactions suspected to be due to omalizumab.
There were 85 cases with an anaphylaxis descriptor and additional 33 cases consistent with anaphylaxis (118 total).
32 reactions occurred after the first dose and 14 were after the second dose of omalizumab.
19 reactions occurred within 1 hour of omalizumab injection.
You can read our case description here: Anaphylactic Reaction to Omalizumab (Xolair) in a Patient with Severe Asthma.
Omalizumab-associated anaphylactic reactions reported between January 2007 and June 2008. Lin RY, Rodriguez-Baez G, Bhargave GA. Ann Allergy Asthma Immunol. 2009 Nov;103(5):442-5.
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