Does Fasenra weaken your immune system?
Fasenra (benralizumab) is a monoclonal antibody that is used to treat eosinophilic asthma and it does this by affecting the way your immune system works, which raises legitimate concerns that it could cause immunosuppression and negatively impact a person's immune response.
Fasenra works by depleting eosinophils, which are a type of white blood cells and part of the immune system that helps fight infection and cancer. Because of this, researchers are conducting ongoing investigations to determine whether Fasenra weakens the immune system and puts patients at increased risk of infection and cancer. No major safety concerns, however, have been identified to date.
Fasenra does not appear to weaken the immune system
Current research suggests that Fasenra:
Fasenra is a monoclonal antibody (IgG1, kappa) that binds to the alpha subunit of the interleukin-5 (IL-5) receptor. It activates the immune system to lower the number of eosinophils in the blood in patients with eosinophilic asthma, which is associated with increased numbers of these white blood cells. Fasenra works by blocking IL-5, enhancing the ability of natural killer cells and by depleting basophils.
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