Rapid Detection of FKS-Associated Echinocandin Resistance in Candida glabrata.

Abstract:

:A novel and highly accurate diagnostic assay platform was established for rapid identification of FKS mutations associated with echinocandin resistance in Candida glabrata The assay platform uses allele-specific molecular beacon and DNA melt analysis following asymmetric PCR. A dual assay for FKS1 and FKS2 was developed to identify within 3 h the most common and clinically relevant resistance-associated mutations, including 8 FKS1 HS1 (wild type [WT], S629P, F625S, D632Y, D632E [T1896G], D632E [T1896A], I634V, and F625F) and 7 FKS2 HS1 (WT, F659del, F659S, F659V, F659L, S663P, and S663F) genotypes. A blinded panel of 188 C. glabrata clinical isolates was tested by both assays. The molecular diagnostic results from the dual assay were 100% concordant with data obtained from DNA sequencing. This platform has the potential to overcome the deficiencies of existing in vitro susceptibility-based assays to identify echinocandin-resistant C. glabrata and holds promise as a surrogate diagnostic method to better direct echinocandin therapy.

authors

Zhao Y,Nagasaki Y,Kordalewska M,Press EG,Shields RK,Nguyen MH,Clancy CJ,Perlin DS

doi

10.1128/AAC.01574-16

subject

Has Abstract

pub_date

2016-10-21 00:00:00

pages

6573-6577

issue

11

eissn

0066-4804

issn

1098-6596

pii

AAC.01574-16

journal_volume

60

pub_type

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