Sulbactam/Durlobactam: First Approval
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Updated: Jul 20, 2025

A Reference Broth Microdilution Method for Dalbavancin In Vitro Susceptibility Testing of Bacteria that Grow Aerobically
Published on: September 9, 2015
1Springer Nature, Private Bag 65901, Mairangi Bay, Auckland, 0754, New Zealand. dru@adis.com.
Abstract:
Sulbactam/durlobactam (XACDURO®), is a co-packaged antibacterial product that has been developed by Entasis Therapeutics Inc. for the treatment of infections caused by Acinetobacter baumannii-calcoaceticus complex (ABC). Coadministration of durlobactam (a β-lactamase inhibitor with potent activity against a broad range of serine β-lactamases) with sulbactam (an established class A β-lactamase inhibitor with antibacterial activity against A. baumannii) prevents sulbactam degradation by ABC-produced β-lactamases. In May 2023, sulbactam/durlobactam was approved in the USA for use in patients 18 years of age and older for the treatment of hospital-acquired bacterial pneumonia and ventilator-associated bacterial pneumonia (HABP/VABP) caused by susceptible isolates of ABC. This article summarizes the milestones in the development of sulbactam/durlobactam leading to this first approval for the treatment of infections caused by ABC.
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