Guidance on Qualification of Biomarker-Galactomannan in Studies of Treatments of Invasive Aspergillosis; Guidance for Industry; Availability

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The Food and Drug Administration (FDA) is announcing the availability of a guidance for industry entitled "Guidance on Qualification of Biomarker--Galactomannan in Studies of Treatments of Invasive Aspergillosis." This guidance provides a qualified context of use (COU) for Galactomannan detection in serum and/or bronchoalveolar lavage (BAL) fluid as the sole microbiological criterion to classify patients as having probable invasive Aspergillosis (IA) for enrollment in clinical trials. This guidance also describes the experimental conditions and constraints for which this biomarker is qualified through the CDER Biomarker Qualification Program. This biomarker can be used by drug developers for the qualified COU in submissions of investigational new drug applications (INDs), new drug applications (NDAs), and biologics license applications (BLAs) without the relevant CDER review group reconsidering and reconfirming the suitability of the biomarker.