Evaluation of in vitro activity of manogepix against multidrug-resistant and pan-resistant Candida auris from the New York Outbreak.

Evaluation of in vitro activity of manogepix against multidrug-resistant and pan-resistant Candida auris from the New York Outbreak. Antimicrob Agents Chemother. 2020 Aug 24;: Authors: Zhu Y, Kilburn S, Kapoor M, Chaturvedi S, Shaw KJ, Chaturvedi V Abstract An ongoing Candida auris outbreak in the New York metropolitan area is the largest recorded to date in North America. Laboratory surveillance revealed NY C. auris isolates are resistant to fluconazole, with variable resistance to other currently used broad-spectrum antifungal drugs, and that several isolates are pan-resistant. Thus, there is an urgent need for new drugs with a novel mechanism of action to combat the resistance challenge. Manogepix (MGX) is a first-in-class agent that targets the fungal Gwt1 enzyme. The prodrug, fosmanogepix, is currently in Phase 2 clinical development for the treatment of fungal infections. We evaluated the susceptibility of 200 New York C. auris isolates to MGX and 10 comparator drugs using CLSI methodology. MGX demonstrated lower MICs than comparators (MIC50 and MIC90 0.03 mg/L; range 0.004-0.06 mg/L). The local ECV (epidemiological cutoff value) for MGX indicated all C. auris isolates were within the population of wild-type (WT) strains; 0.06 mg/L defines the Upper-Limit of Wild-Type (UL-WT). MGX was 8-32-fold more active than the echinocandins, 16-64-fold more active than the azoles, and 64-fold more active than amphotericin B. No differences...
Source: Antimicrobial Agents and Chemotherapy - Category: Microbiology Authors: Tags: Antimicrob Agents Chemother Source Type: research