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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Comparison of the in Vitro Deposition of Nasonex(R) Nasal Spray Product in Two Realistic Nasal Airway Models
Azimi, Mandana; Hindle, Michael; Longest, Worth; Walenga, Ross
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In Vivo-Relevant Transwell Dish-Based Dissolution Testing for Orally Inhaled Corticosteroid Products
Sakagami, Masahiro; Li, Hua; Venitz, Jugen
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Measurement of in vivo Gastrointestinal Release and Dissolution of Three Locally Acting Mesalamine Formulations in Regions of the Human Gastrointestinal Tract
Yu, Alex; Baker, Jason; Fioritto, Ann; Wang, Ying; Luo, Ruijuan; Li, Siwei; Wen, Bo; Bly, Michael; Tsume, Yasuhiro; Koenigsknecht, Mark
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Self-Reporting Photoluminescent Porous Silicon Microparticles for Drug Delivery
Wang, Joanna; Kumeria, Tushar; Bezem, Maria; Wang, Jian; Sailor, Michael
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In Vitro Investigations into Batch-to-Batch Variability in a Fluticasone Propionate and Salmeterol Dry Powder Inhaler
Herpin, Matthew; Hefnawy, Amr; Smyth, Hugh
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Medication Cost-Savings and Utilization of Generic Inhaled Corticosteroid (ICS) and Long-Acting Beta-Agonist (LABA) Drug Products in the USA
Wang, Zhong; Ahluwalia, Sharon; Newman, Bryan; Dhapare, Sneha; Zhao, Liang; Luke, Markham
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Scientific Considerations for Generic Synthetic Salmon Calcitonin Nasal Spray Products
Lee, Sau; Yu, Lawrence; Cai, Bing; Johnsons, Gibbes; Rosenberg, Amy; Cherney, Barry; Guo, Wei; Raw, Andre
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Evaluation of the In Vitro Efficacy of Sevelamer Hydrochloride and Sevelamer Carbonate
Yang, Yongsheng; Mohammad, Adil; Berendt, Robert; Carlin, Alan; Khan, Mansoor; Faustino, Patrick
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In Vitro-In Vivo Correlations for Nicotine Transdermal Delivery Systems Evaluated by both In Vitro Skin Permeation (IVPT) and In Vivo Serum Pharmacokinetics under the Influence of Transient Heat Application
Shin, Soo Hyeon; Thomas, Sherin; Raney, Sam; Ghosh, Priyanka; Hammell, Dana; El Kamary, Samer; Chen, Wilbur; Billington, Melissa; Hassan, Hazem; Stinchcomb, Audra
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Characterization of Particle Size Distributions Respiratory Tract Deposition of Albuterol Sulfate Metered Dose Inhalers
Schroeter, Jeffry; Holt, Jay; Asgharian, Bahman; Bovet, Jean Marc; Hickey, Anthony