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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Evaluation of U.S. FDA Approved Generic Oral Solution Products
Hakeem, Susan; Huang, Yih-Chain; Jiang, Wenlei
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Preparation, Characterization and In Vitro Release Test (IVRT) Study of Tretinoin-Loaded Microspheres in a Topical Gel Product
Hamad, Ghaled; Niu, Mengmeng; Ghosh, Priyanka; Ramezanli, Tannaz; Raney, Sam; Ashraf, Muhammad; Zidan, Ahmed
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Correlation analysis of refractive index (dn/dc) for PLGAs with different ratios of lactide to glycolide,
Hadar, Justin; Garner, John; Skidmore, Sarah; Park, Haesun; Park, Kinam; Kozak, Darby; Wang, Yan
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Solvent-dependent PLGA Solubility for Separation of PLGAs with Different L:G Ratios
Hadar, Justin; Garner, John; Skidmore, Sarah; Park, Haesun; Park, Kinam; Kozak, Darby; Jiang, Xiaohui; Wang, Yan
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Toward Amorphous Indomethacin Ocular Suspensions And The Importance Of Preparation Methods On The Physical Stability
Fraser, Sara; Corvacho, Eduardo; Viitala, Tapani; Peltonen, Leena; Urtti, Arto; Strachan, Clare
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Contrasting Regional Availability Of Different Mesalamine Products In The Gastrointestinal Tract In Healthy Humans Using A Novel Multi-Port Luminal Aspiration System And Correlation With Systemic Absorption.
Fioritto, Ann; Baker, Jason; Collins, Kristen; Wen, Bo; Wang, Ying; Luo, Ruijuan; Bleske, Barry; Johnson, Mark; Koenigsknecht, Mark; Hasler, William; Sun, Duxin
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Development of an in-Vitro Protein Binding Method for the Evaluation of Bioequivalence of Sucralfate Suspension
Feng, Xin; Al-Ghabeish, Manar; Lionberger, Robert; Cruz, Celia; Ashraf, Muhammad
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In Vitro Evaluation of Regional Drug Deposition in Nasal Airways of Children Using Realistic Anatomical Replicas
Esmaeili, A; Hosseini, S; Wilkins, J; Alfaifi, A; Dhapare, S; Walenga, R; Newman, B; Schuman, T; Edwards, D; Longest, W; Hindle, M; Golshahi, L
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Assessing Central and Peripheral Pulmonary Deposition of Three Fluticasone Propionate Dry Powder Inhaler Formulations with Different Aerodynamic Particle Size Distributions in Healthy Subjects via Population Pharmacokinetics Modeling
Drescher, Stefanie; Chen, Mongjen; Urumaddali, Abhinav; Schilling, Uta; Jiao, Yuanyuan; Shao, Jie; Seay, Brandon; Baumstein, Sandra; Abu-Hasan, Mutasim; Winner, Lawrence; Tabulov, Christine; Shur, Jag; Price, Robert; Hindle, Michael; Wei, Xiangyin; Bulitta, J; Hochhaus, G
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Understanding Drug Distribution and Release in Ophthalmic Emulsions
Dong, Yixuan; Hengst, Leanna; Hunt, Robert; Patel, Deval; Vo, Anh; Choi, Stephanie; Ashraf, Muhammad; Cruz, Celia; Xu, Xiaoming