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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Impact of Apparatus and Adapter on In vitro Drug Release of Ophthalmic Semisolid Drug Products
Mekjaruskul, Catheleeya; O’Reilly Beringhs, Andre; Qin, Bin; Wang, Yan; Chowdhury, Pallabita; Lu, Xiuling
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Establishing Quantitative Relationships Between Changes in Nasal Spray In Vitro Metrics and Drug Delivery to the Posterior Nasal Region
Kolanjiyil, AV; Walenga, Ross; Babiskin, Andrew; Golshahi, L; Hindle, Michael; Longest, Worth
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Bioequivalence Evaluation of Topical Metronidazole Products Using Dermal Microdialysis in New Zealand Rabbits
Senemar, Sharareh; Kuzma, B A; Ramezanli, Tannaz; Ghosh, Priyanka; Raney, Sam G.; Rantou, Elena; Stagni, Grazia
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Topical Pharmacokinetics of Brinzolamide Suspensions in Rabbits and Variability Analysis for Sample Size and Design Considerations
Naageshwaran, Vatsala; Bigonne, Helene; Gum, Glenwood; Malla, Spundana; Sol, Charity Del; Bon, Charles; Xu, Xiamoning; Vo, Anh; Smith, William; Beringhs, Andre O’reilly; Kozak, Darby; Tan, Mingliang; Babiskin, Andrew; Babiskin, Andrew; Urtti, Arto; Amo, Eva Del; Ranta, Veli Pekka
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Advancements in the Design and Development of Dry Powder Inhalers and Potential Implications for Generic Development
Mohan, Abhinav; Wang, Qiang; Dhapare, Sneha; Bielski, Elizabeth; Kaviratna, Anubhav; Han, Liangfeng; Boc, Susan; Newman, Bryan
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Computational Model of In Vivo Corneal Pharmacokinetics and Pharmacodynamics of Topically Administered Ophthalmic Drug Products
German, Carrie; Chen, Zhijian; Przekwas, Andrzekj; Walenga, Ross; Babiskin, Andrew; Liang, Zhao; Fan, Jianghong; Tan, Ming-Liang
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An Effective PBPK Model Predicting Dissolved Drug Transfer from a Representative Nasal Cavity to the Blood Stream
Dave, Sujal; Kleinstreuer, Clement; Chari, Sriram
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Linking Suspension Nasal Spray Drug Deposition Patterns To Pharmacokinetic Profiles: A Proof Of Concept Study Using Computational Fluid Dynamics
Rygg, Alex; Hindle, Michael; Longest, Worth
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Evaluation of Heat Effects on Fentanyl Transdermal Delivery Systems Using In Vitro Permeation and In Vitro Release Methods
Zhang, Qian; Murawsky, Michael; Lacount, Terri; Hao, Jinsong; Ghosh, Priyanka; Raney, Sam; Kasting, Gerald; Li, Kevin
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Topical Pharmacokinetics of Dexamethasone Suspensions in the Rabbit Eye: Bioavailability Comparison
Naageshwaran, Vatsala; Ranta, Veli Pekka; Toropainen, Elisa; Tuomainen, Marjo; Gum, Glenwood; Xie, Enli; Bhoopathy, Siddhartha; Urtti, Arto; Del Amo, Eva