Human immunoglobulin E specific for duck feather antigen (IgE (duck feather-specific))

Human IgE specific for duck feather antigens refers to a subset of the IgE class of immunoglobulins that recognize and bind proteins derived from duck feathers. IgE is a key mediator of allergic reactions: when allergen-specific IgE binds to the high-affinity IgE receptor (FcεRI) on mast cells and basophils, exposure to the relevant antigen (here, duck feather proteins) leads to degranulation and release of mediators (e.g., histamine), causing symptoms typical of allergic reactions[3][1][4]. Testing for duck feather-specific IgE in serum aids in diagnosing allergy to duck feathers[5]. While IgE itself is a well-recognized therapeutic target (targeted by drugs such as omalizumab), "IgE specific for duck feather antigens" is not a unique molecular target but reflects the patient’s immunological response to a defined environmental allergen, and thus is best considered as a *biomarker* rather than a conventional molecular target[5]. **Note:** - "Human IgE specific for duck feather antigens" is not a unique or standardized protein, receptor, or gene product—it is an individualized adaptive immune response, present only in individuals sensitized to duck feather allergens[5]. - Thus, it is *not generally considered a discrete therapeutic target* (like an enzyme, receptor, or transporter). Instead, total or allergen-specific IgE can be clinically relevant *biomarkers*—and total IgE is the target of anti-IgE therapies such as omalizumab[4]. - There are no canonical gene sequences, abbreviations, or standardized database entries for "IgE specific for duck feather antigen" as a molecular target distinct from generic "immunoglobulin E" (gene name IGHE)[6].

Other names

Duck feather allergy IgEDuck feather-specific immunoglobulin EAnti-duck feather IgE

IgE binding agents (e.g., omalizumab) neutralize circulating IgE, limiting activation of mast cells/basophils and preventing allergic response