It specifically targets the antibody immunoglobulin E (IgE), which is involved in the allergic process in asthma.

BBC: NEWS | Health | New drug for hard-to-treat asthma

Another approach looks at antibodies called immunoglobulin E (IgE), which recognizes the offending allergenic proteins and is responsible for immediate reactions, including anaphylaxis.

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Xolair works by targeting an immune-system molecule called immunoglobulin E (IgE), a crucial defensive weapon that goes into overdrive in many patients with allergic asthma.

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