The Investigational Fungal Cyp51 Inhibitor VT-1129 Demonstrates Potent In Vitro Activity against Cryptococcus neoformans and Cryptococcus gattii.

The in vitro activities of the novel fungal Cyp51 inhibitor VT-1129 were evaluated against a large panel of Cryptococcus neoformans and Cryptococcus gattii isolates. VT-1129 demonstrated potent activities against both Cryptococcus species as demonstrated by low MIC50 and MIC90 values. For C. gattii, the in vitro potency was maintained against all genotypes. In addition, significantly lower geometric mean MICs were observed for VT-1129 than for fluconazole against C. neoformans, including isolates with reduced fluconazole susceptibility.