In Vitro Evolution of Cefiderocol Resistance in an NDM-Producing Klebsiella pneumoniae Due to Functional Loss of CirA

ABSTRACT By serially exposing an NDM-producing Klebsiella pneumoniae clinical strain to cefiderocol, we obtained a mutant with cefiderocol MIC of >128 μg/ml. The mutant contained an early stop codon in the iron transporter gene cirA, and its complementation fully restored susceptibility. The cirA...

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Bibliographic Details
Main Authors: Christi L. McElheny, Erin L. Fowler, Alina Iovleva, Ryan K. Shields, Yohei Doi
Format: Article
Language:English
Published: American Society for Microbiology 2021-12-01
Series:Microbiology Spectrum
Subjects:
Online Access:https://journals.asm.org/doi/10.1128/Spectrum.01779-21