In Vitro Activity of Tebipenem (SPR859) Against Penicillin-Binding Proteins of Gram-Negative Bacteria Posted on June 11, 2018 at 2:30 pm.Written by Spero Therapeutics View Presentation Post navigation Pharmacokinetics and Pharmacodynamics of Tebipenem for Multi-Drug Resistant EnterobacteriaceaeAntimicrobial Activity of Tebipenem (SPR859) against a Global Challenge Set of Enterobacteriaceae Isolates