714. Analysis of the Effect of Urine on the In Vitro Activity of Gepotidacin and Levofloxacin Against Escherichia coli, Staphylococcus epidermidis, and Staphylococcus saprophyticus

Background Gepotidacin (GSK2140944) is a first in class novel triazaacenaphthylene bacterial type II topoisomerase inhibitor in clinical development for the treatment of gonorrhea and uncomplicated UTI (acute cystitis). Gepotidacin selectively inhibits bacterial DNA gyrase and topoisomerase IV by a unique mechanism not utilized by any currently approved therapeutic agent and demonstrates in vitro activity against most target pathogens resistant to established antibacterials, including fluoroquinolones. This study was undertaken to determine the effect of various urine parameters on the in vitro activity of gepotidacin and a comparative agent, levofloxacin, against a variety of bacteria.