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2016•Medical Mycology Case ReportsOpen access

Two echinocandin-resistant Candida glabrata FKS mutants from South Africa

Serisha D. Naicker, Rindidzani E. Magobo, Thokozile G. Zulu, Tsidiso G. Maphanga, Nkosinathi Luthuli, Warren Lowman, Nelesh P. Govender

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Abstract

Echinocandins are recommended as first-line agents to treat invasive infections caused by Candida glabrata since this organism is inherently less susceptible to azoles. However, resistance to echinocandins has been described in C. glabrata due to amino acid changes in the hotspot regions of the FKS1 and FKS2 genes. In this report, we describe the first two South African C. glabrata isolates with echinocandin resistance mediated by mutations in the FKS2 gene. Both isolates were cultured from urine specimens from private-sector patients.

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Echinocandins are recommended as first-line agents to treat invasive infections caused by Candida glabrata since this organism is inherently less susceptible to azoles. However, resistance to echinocandins has been described in C. glabrata due to amino acid changes in the hotspot regions of the FKS1 and FKS2 genes. In this report, we describe the first two South African C. glabrata isolates with echinocandin resistance mediated by mutations in the FKS2 gene. Both isolates were cultured from urine specimens from private-sector patients.

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Available abstract

Echinocandins are recommended as first-line agents to treat invasive infections caused by Candida glabrata since this organism is inherently less susceptible to azoles. However, resistance to echinocandins has been described in C. glabrata due to amino acid changes in the hotspot regions of the FKS1 and FKS2 genes. In this report, we describe the first two South African C. glabrata isolates with echinocandin resistance mediated by mutations in the FKS2 gene. Both isolates were cultured from urine specimens from private-sector patients.

Key concepts: Candida glabrata, Echinocandins, Echinocandin, Microbiology, Medicine, Mutant, Gene, Biology

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