GDUFA Research Outcomes
Complex Routes of Delivery
The Generic Drug User Fee Amendments (GDUFA) science and research program facilitates patient access to high-quality generic drugs by advancing research in areas where generic product development has been limited or prevented due to knowledge gaps about the kind of evidence needed to demonstrate that a generic product is the same as its brand name reference listed drug product. Leaders and experts across the generic industry collaborate to establish GDUFA research priorities for the most pressing scientific challenges they face with generic product development. Scientists and clinicians from industry, academia, and the U.S. Food and Drug Administration (FDA) strategically design research in these areas so that the outcomes help to build scientific bridges across the knowledge gaps, thereby facilitating pharmaceutical manufacturers to develop generic drugs that were previously challenging or unfeasible to develop.
A major GDUFA science and research priority is to enhance the efficiency of bioequivalence (BE) approaches for complex routes of delivery, such as locally-acting gastrointestinal (GI), buccal, sublingual, inhalation, nasal, ophthalmic, otic, and topical dermatological, vaginal and rectal products. The advancement of research in this area focuses on understanding of how ingredients and other aspects of a formulation influence drug absorption via complex routes of delivery, building in vivo predictive models and identifying corresponding failure modes for BE, to support the development of efficient BE approaches for these products.
Outcomes including scientific publications, presentations, and posters arising from GDUFA-funded research in this priority area are available in this section.
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Mathematical Models of Skin Penetration
Heisig, Michael; Nagel, Arne; Wittum, Gabriel
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Drug Permeation through Skin: A Challenging Application for High Performance Scientific Computing
Heisig, M; Nagel, A; Wittum, G
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Comparing Device User Interfaces and Seeking Advice in the Pre-ANDA Period
Hartka, Kathryn
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Orally Inhaled Drug Product PSGs: General Considerations Using the Alternative Bioequivalence (BE) Approach In Lieu of Comparative Clinical Endpoint (CCEP) BE Study for Suspension-Based Metered Dose Inhalers
Han, Liangfeng
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Bioequivalence Approaches for Orally Inhaled Drug Products
Han, Liangfeng; Bielski, Elizabeth; Ma, Tian
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The Potential of Pharmacokinetic Bioequivalence (BE) Studies in Detecting Regional Deposition with Orally Inhaled Drug Products
Han, Liangfeng
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Dermatopharmacokinetics: Modelling, Assessment and Optimization
Guy, Richard
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Prediction, Assessment and Optimisation of Drug Delivery into and through the Skin
Guy, Richard
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Prediction and Optimization of Drug Delivery into and Through the Skin
Guy, Richard
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Measuring Drug Concentration in the Skin in Vivo: Techniques and Challenges
Guy, Richard