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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Characteristics of Inhaled Particle Deposition in the Lungs of Imaging-based Asthma Clusters: a Numerical Study
Choi, Jiwoong; LeBlanc, Lawrence; Choi, Sanghun; Haghighi, Babak; Hoffman, Eric; O’Shaughnessy, Patrick; Wenzel, Sally; Castro, Mario; Fain, Sean; Jarjour, Nizar; Schiebler, Mark; Denlinger, Loren; Lin, Chinglong
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Importance of Comparative Unit Dose Concentration in the Evaluation of Complex Ophthalmic Suspension Product Quality
Chen, Lynn; Manna, Soumyarwit; Petrochenko, Peter; Wu, Yong; Qin, Bin; Kozak, Darby; Zheng, Jiwen
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A Novel Method To Investigate Local Concentrations Of Mesalamine In The Gastrointestinal Tract Of Healthy Volunteers.
Brown, Sara; Bly, Michael; Baker, Jason; May, Kristen; Fioritto, Ann; Hasler, William; Sun, Duxin
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Dry Powder Inhaler (DPI) Resistance: Human Behaviour and Psychology of Patient Inspiratory Effort
Chakma, Monbi S; Meah, Sally; Biddiscombe, Martyn; Murnane, Darragh; Bielski, Elizabeth; Feibus, Katharine; Natarajan, Karthika; Li, Karen; Kinoj, Minori; Illoh, Onyekachukwu; Han, Liangfeng; Newman, Bryan; Usmani, Omar S
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Feasibility of In Vitro Permeation Testing for Cleocin T� (Clindamycin Phosphate) Topical Lotion to Support a Demonstration of Bioequivalence
Bolla, Pradeep; Hamad, Ghaled; Jiang, Ying; Ramezanli, Tannaz; Ghosh, Priyanka; Raney, Sam
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Effect of Particle Size and Viscosity of Ophthalmic Suspensions on Ocular Bioavailability
Bourne, David; Vooturi, Sunil; Panda, Jiban; Choi, Stephanie; Kim, Hyewon; Yandrapu, Sarath; Kompella, Uday
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Feasibility of In Vitro Permeation Testing for Cleocin T� (Clindamycin Phosphate) Topical Lotion to Support a Demonstration of Bioequivalence
Bolla, Pradeep; Hamad, Ghaled; Jiang, Ying; Ramezanli, Tannaz; Ghosh, Priyanka; Raney, Sam; Ashraf, Muhammad; Zidan, Ahmed
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Dermal OFM Indicates Differences in Acyclovir Skin Penetration between Males and Females
Bodenlenz, Manfred; Augustin, Thomas; Birngruber, Thomas; Tiffner, Katrin; Raml, Reingard; Sinner, Frank
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In Vivo Dermal Open Flow Microperfusion: Understanding and Controlling Sources of Variability to Evaluate Topical Bioequivalence
Bodenlenz, M; Birngruber, T; Tiffner, K; Raml, R; Tschapeller, B; Augustin, T; Schwagerle, G; Korsatko, S; Kanfer, I; Raney, S G; Sinner, F
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Variability of Topical Penetration Data: What do we Learn from a Be-study using Dermal Open Flow Microperfusion
Bodenlenz, Manfred; Augustin, Thomas; Birngruber, Thomas; Tiffner, Katrin; Raml, Reingard; Raney, Sam; Sinner, Frank