Pilot study of anti-lipopolysaccharide human monoclonal antibody MAB-T88 in patients with gram-negative sepsis.

MAB-T88 is a human monoclonal IgM antibody directed at the lipopolysaccharide of gram-negative bacteria. A protocol was designed to identify a group of septic patients with a very high likelihood of gram-negative bacteremia. All 6 patients entered in the protocol had a gram-negative source, and 4 of 6 had gram-negative bacteremia. In this patient population, MAB-T88 was shown to be safe with an effective half-life of 19.1 hours.