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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Rheological Characterization of Topical Clobetasol Propionate Foams
Varadarajan, A; Ajjarapu, S; Rangappa, S; Ghosh, Priyanka; Raney, Sam; Repka, M; Narasimha Murthy, S; Kundu, S
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Evaluating Topical Drug Bioavailability in the Skin Using Raman Spectroscopy
Vitry, P; Tabosa, A; Belsey, N; Tsikritsis, D; Woodman, T; Bunge, A; Delgado-Charro, M; Guy, R
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Simulating the Dermal Permeation of Clobetasol-17 Propionate from a Topical Formulation
Van Osdol, W; Dong, J; Spires, J
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Rheological Characterization of Topical Pharmaceutical Foam Products
Varadarajan, A; Ajjarapu, S; Rangappa, S; Ghosh, Priyanka; Raney, Sam; Maibach, H; Repka, M A; Narasimha Murthy, S; Kundu, S
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PBPK Modeling of Percutaneous Pharmacokinetics for Tazarotene and Tretinoin Creams: Applicability and Challenges
Tsakalozou, Eleftheria; Alam, Khondoker; Babiskin, Andrew; Zhao, Liang
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Development and Application of a Dermal PBPK Modeling for Ethinyl Estradiol-Containing Transdermal Delivery Systems to Predict Exposure for Different Application Sites
Tsakalozou, Eleftheria; Alam, Khondoker; Babiskin, Andrew; Fang, Lanyan (Lucy); Zhao, Liang
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Development of a Dermal PBPK Modeling for an Ethinyl Estradiol-Containing Transdermal Delivery System
Tsakalozou, Eleftheria; Alam, Khondoker; Babiskin, Andrew; Fang, Lanyan; Zhao, Liang
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Development of an Ocular Physiologically-Based Pharmacokinetic Model to Describe the Impact of Formulation Attributes on the Disposition of an Antibiotic Applied on the Rabbit Eye
Tsakalozou, Eleftheria; LeMerdy, Maxime; Babiskin, Andrew; Zhao, Liang
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Physical Formulation Features and Ocular Absorption from Topical Suspensions: Toward Mechanistic Understanding
Toropainen, Elisa; Novakovic, Dunja; Fraser, Sara; Tuomainen, Marjo; Hagstrm, Marja; Amo, Eva del; Vellonen, Kati-Sisko; Peltoniemi, Jonne; Tengvall, Unni; Pelkonen, Laura; Reinisalo, Mika; Ruponen, Marika; Auriola, Seppo; Viitala, Tapani; Absar, Mohammad
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A Clinical Study to Assess the Bioequivalence of Lidocaine and Prilocaine Topical Drug Products Using Dermal Open Flow Microperfusion
Tiffner, Katrin; Ramezanli, Tannaz; Birngruber, Thomas; Bodenlenz, Manfred; Lackner, Bettina; Raml, Reingard; Schwagerle, Gerd; Kainz, Sonja; Gander, Edgar; Raney, Sam; Sinner, Frank