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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Development of an In Vitro Release Testing Method for Rectal Suppositories
Xie, Lingxiao; Kelchen, Megan; Ghosh, Priyanka; Raney, Sam; Shen, Jie
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In-Silico Investigation of the Cutaneous Pharmacokinetics of Acyclovir from Creams Containing Acyclovir and a Penetration Enhancer
Wittum, Rebecca; Wang, Junxi; Mohammed, Yousuf; Namjoshi, Sarika; Grice, Jeffrey; Ghosh, Priyanka; Raney, Sam; Roberts, Michael; Nagel, Arne; Wittum, Gabriel
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Novel Method for Bench-top 19F NMR in Measuring API Phase Partition for Oil-in-Water Emulsion Drug Products
Wang, Xinyi; Patil, Sharadrao; Chen, Kang
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Modeling Approach for Assessing the Impact of Physicochemical Properties on Bioequivalence of Cyclosporine Ophthalmic Emulsion
Walenga, Ross; Babiskin, Andrew; Absar, Mohammad; Zhang, Xinyuan; Zhao, Liang; Lionberger, Robert
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Droplet Evaporation from a Solution-Based Metered Dose Inhaler: A Computational Approach
Walenga, Ross; Conti, Denise; Oguntimein, Oluwamurewa; Delvadia, Renishkumar; Rygg, Alex; Babiskin, Andrew
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Effect of Physicochemical Properties of Q1/Q2 Ophthalmic Suspensions on Ocular Bioavailability and Bioequivalence
Vooturi, S; Bourne, D; Panda, J; Choi, S; Kim, H; Yandrapu, S; Kompella, U
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Pitfalls and Challenges of Analyzing Particle Size Distribution in Ophthalmic Suspensions Using Laser Diffraction
Vo, Anh; Feng, Xin; Kozak, Darby; Choi, Stephanie; Xu, Xiaoming
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Impact of Manufacturing Processes on Critical Quality Attributes of Brinzolamide Ophthalmic Suspensions
Vo, Anh; Feng, Xin; Patel, Deval; Patel, Mehulkumar; Kozak, Darby; Choi, Stephanie; Zheng, Jiwen; Xu, Xiaoming
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Assessing topical drug clearance from 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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Assessing topical drug penetration into the skin using Raman spectroscopy
Vitry, P; Tabosa, A; Belsey, N; Tsikritsis, D; Woodman, T; Bunge, A; Delgado-Charro, M; Guy, R