Clinical Impact of Polymerase Chain Reaction–Based <i>Aspergillus</i> and Azole Resistance Detection in Invasive Aspergillosis: A Prospective Multicenter Study

Real-time PCR-based resistance testing may help to limit the clinical impact of triazole resistance. In contrast, the clinical impact of an isolated positive Aspergillus PCR on BALf seems limited. The interpretation of the EORTC/MSGERC PCR criterion for BALf may need further specification (eg, minimum cycle threshold value and/or PCR positive on >1 BALf sample).