TABLE 1.
In vitro susceptibilities of 3,959 clinical isolates of Candida spp. to caspofungin, fluconazole, and itraconazolea
Organism (no. tested) and antifungal agent | MIC (μg/ml)b
|
% Susceptible at MIC (μg/ml) of:
|
||||||||
---|---|---|---|---|---|---|---|---|---|---|
Range | 50% | 90% | 0.12 | 0.25 | 0.5 | 1 | 2 | 4 | 8 | |
C. albicans (2,453) | ||||||||||
Caspofungin | 0.007->8 | 0.12 | 0.25 | 79 | 97 | 99 | 99 | 99 | 99 | 99 |
Fluconazole | 0.12->128 | 0.25 | 0.5 | 24 | 82 | 91 | 94 | 95 | 96 | 97c |
Itraconazole | 0.007->8 | 0.03 | 0.12 | 93d | 96 | 98 | 99 | 99 | 99 | 99 |
C. glabrata (512) | ||||||||||
Caspofungin | 0.007->8 | 0.12 | 0.25 | 58 | 91 | 99 | 99 | 99 | 99 | 99 |
Fluconazole | 0.12->128 | 8 | 32 | 0.2 | 0.6 | 1 | 2 | 12 | 33 | 60c |
Itraconazole | 0.007->8 | 1 | 2 | 4d | 18 | 46 | 80 | 91 | 94 | 96 |
C. parapsilosis (420) | ||||||||||
Caspofungin | 0.03->8 | 1 | 4 | 2 | 6 | 25 | 60 | 87 | 95 | 99 |
Fluconazole | 0.12-64 | 0.5 | 2 | 1 | 11 | 51 | 78 | 93 | 97 | 99c |
Itraconazole | 0.015-2 | 0.12 | 0.25 | 54d | 90 | 99 | 99 | 100 | ||
C. tropicalis (285) | ||||||||||
Caspofungin | 0.03->8 | 0.12 | 0.5 | 60 | 86 | 96 | 98 | 98 | 98 | 98 |
Fluconazole | 0.12->128 | 0.5 | 2 | 2 | 20 | 55 | 82 | 95 | 97 | 98c |
Itraconazole | 0.015->8 | 0.12 | 0.5 | 58d | 86 | 96 | 99 | 99 | 99 | 99 |
C. dubliniensis (88) | ||||||||||
Caspofungin | 0.015-1 | 0.25 | 0.5 | 35 | 83 | 98 | 100 | |||
Fluconazole | 0.12->128 | 0.25 | 16 | 45 | 81 | 84 | 85 | 85 | 85 | 89c |
Itraconazole | 0.015->8 | 0.06 | 0.25 | 84d | 94 | 98 | 98 | 98 | 98 | 98 |
C. guilliermondii (75) | ||||||||||
Caspofungin | 0.12->8 | >8 | >8 | 1 | 3 | 5 | 5 | 7 | 11 | 13 |
Fluconazole | 0.25->128 | 4 | 16 | 0 | 1 | 2 | 6 | 21 | 64 | 81c |
Itraconazole | 0.03->8 | 1 | 1 | 7d | 24 | 48 | 97 | 97 | 99 | 99 |
C. krusei (72) | ||||||||||
Caspofungin | 0.12-2 | 1 | 1 | 1 | 10 | 43 | 99 | 100 | ||
Fluconazole | 4-128 | 32 | 64 | 0 | 0 | 0 | 0 | 0 | 1 | 5c |
Itraconazole | 0.12-2 | 0.5 | 1 | 2d | 18 | 57 | 95 | 100 | ||
C. lusitaniae (26) | ||||||||||
Caspofungin | 0.12-2 | 0.5 | 1 | 11 | 23 | 81 | 96 | 100 | ||
Fluconazole | 0.12-16 | 0.5 | 2 | 2 | 38 | 64 | 86 | 97 | 97 | 98c |
Itraconazole | 0.03-2 | 0.12 | 0.25 | 50d | 91 | 98 | 98 | 100 | ||
C. famata (9) | ||||||||||
Caspofungin | 0.06->8 | 4 | 11 | 11 | 22 | 33 | 44 | 56 | 56 | |
Fluconazole | 0.25-16 | 2 | 0 | 13 | 33 | 47 | 53 | 73 | 89c | |
Itraconazole | 0.06-1 | 0.25 | 33d | 60 | 80 | 100 | ||||
Candida spp.e (19) | ||||||||||
Caspofungin | 0.03-8 | 0.5 | 1 | 25 | 31 | 75 | 94 | 94 | 94 | 100 |
Fluconazole | 0.12-128 | 4 | 64 | 4 | 7 | 11 | 25 | 39 | 75 | 86c |
Itraconazole | 0.015->8 | 0.25 | 1 | 29d | 68 | 86 | 96 | 96 | 96 | 96 |
BMD testing according to NCCLS M27-A2 (17).
50% and 90%, MICs encompassing 50 and 90% of isolates tested, respectively.
Percentage of isolates susceptible to fluconazole at the NCCLS breakpoint of ≤8 μg/ml.
Percentage of isolates susceptible to itraconazole at the NCCLS breakpoint of ≤0.12 μg/ml.
Includes C. kefyr (four isolates), C. rugosa (six isolates), C. pelliculosa (three isolates), C. lambica (two isolates), and one isolate each of C. lipolytica, C. humicola, and C. zeylanoides.