Novel non hot spot modification in Fks1 ofCandida aurisconfers echinocandin resistance

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Abstract

ABSTRACT We determined echinocandin susceptibility and FKS1 genotypes of thirteen clinical isolates of Candida auris recovered from four patients at a tertiary care center in Salvador, Brazil. Three isolates were categorized as echinocandin-resistant and harbored a novel FKS1 mutation leading to an amino acid change W691L located downstream from hot-spot 1. When introduced to echinocandin-susceptible C. auris strains by CRISPR/Cas9, Fks1 W691L induced elevated MIC values to all echinocandins (ANF 16-32x; CAS >64x; MCF >64x).

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europepmc
last seen: 2026-05-19T01:45:01.086888+00:00
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License: CC-BY-NC-ND-4.0