title: A humanized monoclonal antibody targeting Staphylococcus aureus.
abstract: This current presentation describes the in vitro and in vivo characterization of Aurexis (tefibazumab), a humanized monoclonal antibody that exhibits a high affinity and specificity and for the Staphylococcus aureus MSCRAMM (Microbial Surface Components Recognizing Adhesive Matrix Molecules) protein ClfA. Aurexis inhibited ClfA binding to human fibrinogen, and enhanced the opsonophagocytic uptake of ClfA-coated beads. Preclinical in vivo testing revealed that a single administration of Aurexis significantly protected against an IV challenge with a methicillin resistant S. aureus (MRSA) strain in murine septicemia and rabbit infective endocarditis (IE) models. Safety and pharmacokinetic data from a 19-patient phase I study support continued evaluation of Aurexis in phase II studies.
authors.affiliation: Inhibitex Inc., 1165 Westside Parkway, Suite 400, Alpharetta, GA 30004, USA. jpatti@inhibitex.com
authors.forename: Joseph M
authors.initials: JM
authors.lastname: Patti
mesh_terms: D018829:Adhesins, Bacterial / Q000276:immunology / Q000378:metabolism; D000818:Animals; D000911:Antibodies, Monoclonal / Q000276:immunology* / Q000627:therapeutic use; D003428:Cross Infection / Q000517:prevention & control; D006801:Humans; D051379:Mice; D011817:Rabbits; D013203:Staphylococcal Infections / Q000517:prevention & control*; D013211:Staphylococcus aureus / Q000276:immunology*
chemical_list: D018829:Adhesins, Bacterial; D000911:Antibodies, Monoclonal; C048165:adhesin, Staphylococcus aureus