Biologic therapies for asthma represent a relatively newer approach in managing different medical conditions but they are not unique to allergy, asthma, and immunology. Biologics have been used for asthma since Xolair was FDA approved in 2003. These therapies utilize recombinant DNA technology to produce antibodies that have very specific biological targets. Prior to prescribing a biologic, a patient will have certain biomarkers checked which can help predict who will respond to which biologic. If you haven’t responded positively to other asthma treatments, biologic therapies could help to relieve your symptoms.