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A human immunoglobulin (Ig) G1 kappa monoclonal antibody (mAb) targeting a unique epitope in the stalk of the influenza A hemagglutinin (HA) protein, with broad influenza A virus neutralization activity. MEDI8852 was derived from an antibody isolated from human memory B cells from patients previously infected with influenza caused by type A strains that was further optimized to increase neutralization potential. Upon infusion, MEDI8852 targets and binds to a region within the stalk of the HA protein that is highly conserved amongst all influenza A virus subtypes. This neutralizes and prevents essential steps of the viral lifecycle, thereby blocking infectivity of all influenza A virus subtypes. HA, a glycoprotein found on the surface of the influenza virus, plays a key role in viral attachment and cell entry. Check for \'https://www.cancer.gov/about-cancer/treatment/clinical-trials/intervention/C131295\' active clinical trials using this agent. (\'http://ncit.nci.nih.gov/ncitbrowser/ConceptReport.jsp?dictionary=NCI%20Thesaurus&code=C131295\' NCI Thesaurus)
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