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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Physiologically-based Pharmacokinetic Model to Support Ophthalmic Suspension Product Development
Le Merdy, Maxime; Fan, Jianghong; Babiskin, Andrew; Zhao, Liang
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Clinical Ocular Exposure Extrapolation Using PBPK Modeling and Simulation: Levofloxacin Solution Case Study
Le Merdy, Maxime; Zheng, Yujuan; Lukacova, Viera; Tan, Ming Liang; Babiskin, Andrew; Zhao, Liang
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Application of Ocular Physiologically Based Pharmacokinetic Modeling to Understand the Impact of Particle Size and Viscosity on Ophthalmic Bioavailability of Tobradex ST Suspension in Rabbits
Lemerdy, Maxime; Tsakalozou, Eleftheria; Choi, Stephanie; Kim, Myongjin; Xu, Lin; Stewart, Sharron; Chockalingam, Ashok; Rouse, Rodney; Matta, Murali; Zhao, Liang; Lionberger, Robert; Fan, Jianghong
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Clinical Ocular Exposure Extrapolation Using PBPK Modeling and Simulation: Moxifloxacin Solution Case Study
Le Merdy, Maxime; Lukacova, Viera; Tan, Ming-Liang; Babiskin, Andrew; Zhao, Liang
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Estimation of In Vivo Percutaneous Permeation (Flux) and Cumulative Amount Input of Metronidazole Formulations in Mini-Pigs’ Dermis
Kuzma, Benjamin; Senemar, Sharareh; Ramezanli, Tannaz; Ghosh, Priyanka; Raney, Sam; Stagni, Grazia
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Computational Model For Estimating The Effect Of Heat On Dermal Clearance In Skin Transport
LaCount, Terri; Li, Kevin; Kasting, Gerald
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Estimation of In Vivo Skin Permeation (Flux) and Cumulative Amount Input of Metronidazole Formulations in Mini-Pigs’ Dermis
Kuzma, Benjamin; Senemar, Sharareh; Stagni, Grazia
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Effect of Formulation Wipe-Off Time on Topical Bioavailability of Metronidazole Using Dermal Microdialysis
Kuzma, Benjamin; Senemar, Sharareh; Stagni, Grazia
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Estimation of In Vivo Skin Permeation (Flux) and Cumulative Amount Input of Metronidazole Formulations in Mini-Pigs’ Dermis
Kuzma, Benjamin; Senemar, Sharareh; Stagni, Grazia
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LC/MS/MS Method for the Quantification of Metronidazole in Skin Dialysate
Kuzma, Benjamin; Senemar, Sharareh; DePinto, Richard; Stagni, Grazia