PC945

PC945, a potent, long-acting antifungal triazole, possesses activity against a broad range of both azole-susceptible and azole-resistant strains of Aspergillus fumigatus. PC945 is also a potent, tightly binding inhibitor of A. fumigatus sterol 14α-demethylase activity, CYP51A and CYP51B, with IC50s of 0.23 μM and 0.22 μM, respectively[1][2].

fungal; CYP51A: 0.23 μM (IC₅₀); CYP51B: 0.22 μM (IC₅₀)

[1] Colley T, et al. In Vitro and In Vivo Antifungal Profile of a Novel and Long-Acting Inhaled Azole, PC945, on Aspergillus fumigatus Infection. Antimicrob Agents Chemother. 2017 Apr 24;61(5). pii: e02280-16. DOI:10.1128/AAC.02280-16
[2] Colley T, et al. Antifungal synergy of a topical triazole, PC945, with a systemic triazole against respiratory Aspergillus fumigatus infection. Sci Rep. 2019 Jul 1;9(1):9482. DOI:10.1038/s41598-019-45890-w