Omalizumab

Omalizumab, sold under the brand name Xolair, is a medication used to treat asthma, nasal polyps, and urticaria.[5][6] Omalizumab is a recombinant DNA-derived humanized IgG1k monoclonal antibody that specifically binds to free human immunoglobulin E (IgE) in the blood and interstitial fluid and to membrane-bound form of IgE (mIgE) on the surface of mIgE-expressing B lymphocytes.[7] Unlike an ordinary anti-IgE antibody, it does not bind to IgE th... [wikipedia]