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 Heat Effects On Transdermal Delivery Systems Using An In Vitro Permeation Test (Ivpt) Strategy
Zhang, Q; Murawsky, M K; Lacount, T; Hao, J; Raney, S G; Ghosh, P; Kasting, G; Li, S
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Confocal Raman Spectroscopic Assessment of the Topical Bioavailability of Metronidazole: Comparison of Laboratory-Made Formulations and Approved Drug Products
Zarmpi, P; Tsikritsis, D; Watson, A; Vorng, J L; Tyagi, V; Ghosh, P; Belsey, N A; Woodman, T J; White, KAJ; Bunge, AL; Delgado-Charro, M B; Guy, R H
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Confocal Raman Spectroscopic Assessment of the Topical Bioavailability of Metronidazole: Comparison of Laboratory-Made Formulations and Approved Drug Products
Zarmpi, P; Tsikritsis, D; Watson, A; Vorng, J-L; Tyagi, V; Ghosh, P; Belsey, NA; Woodman, T J; White, KAJ; Bunge, AL; Delgado-Charro, MB; Guy, RH
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Assessing Dermatological Product Bioequivalence With Raman Spectroscopy
Zarmpi, P; Maciel-Tabosa, A; Vitry, P; Tsikritsis, D; Belsey, N; Vorng, J L; Woodman, T J; Bunge, A L; White, K A J; Delgado-Charro, M B; Guy, R H
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Correlative Raman and Mass Spectroscopic Imaging to Quantify Drug Delivery into the Skin
Zarmpi, P; Maciel-Tabosa, MA; Vitry, P; Belsey, NA; Vorng, JL; Tsikritsis, D; Woodman, TJ; White, KAJ; Bunge, AL; Delgado-Charro, MB; Guy, RH
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A Fully Validated LC MS/MS Method For Simultaneous Determination Of Oxybutynin And Its Metabolite N-desethyloxybutynin In Human Serum
Yu, Mingming; Thomas, Sherin; Hammell, Dana; Hassan, Hazem; Stinchcomb, Audra
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Pharmacokinetics Of Fentanyl After Using Reference And Generic Transdermal Fentanyl Patches With And Without Standardized Heat Application In Healthy Human Volunteers
Yu, Mingming; Shin, Soo Hyeon; Hammell, Dana; Hassan, Hazem; Stinchcomb, Audra
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Development of An In Vitro Permeation Test (IVPT) Method for Vaginal Creams
Xie, L; Yue, W; Kelchen, M; Ghosh, P; Niu, M; Raney, S G; Shen, J
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Impact of Material Attributes on In Vitro Performance of Clindamycin Phosphate Vaginal Creams
Xie, Lingxiao; Yue, Weizhou; Kelchen, Megan; Ghosh, Priyanka; Niu, Mengmeng; Raney, Sam G; Shen, Jie
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Impact of Material Attributes on In Vitro Release Characteristics of Rectal Suppositories
Xie, Lingxiao; Yue, Weizhou; Kelchen, Megan; Ghosh, Priyanka; Niu, Mengmeng; Raney, Sam; Shen, Jie