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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Application of the Modified chi-Square Ratio Statistic in a Stepwise Procedure for Cascade Impactor Equivalence Testing
Weber, Benjamin; Lee, Sau; Delvadia, Renishkumar; Lionberger, Robert; Li, Bing; Tsong, Yi; Hochhaus, Guenther
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Validating CFD Predictions of Nasal Spray Deposition: Inclusion of Cloud Motion Effects for Two Spray Pump Designs
Kolanjiyil, Arun V; Hosseini, Sana; Alfaifi, Ali; Farkas, Dale; Walenga, Ross; Babiskin, Andrew; Hindle, Michael; Golshahi, Laleh; Longest, P Worth
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Dexamethasone Degradation in Aqueous Medium and Implications for Correction of In Vitro Release from Sustained Release Delivery Systems
Matter, Brock; Ghaffari, Alireza; Bourne, David; Wang, Yan; Choi, Stephanie; Kompella, Uday
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LC-MS Determination of Fentanyl in Human Serum and Application to a Fentanyl Transdermal Delivery Pharmacokinetic Study
Yu, Mingming; Abdallah, Inas; Shin, Soo Hyeon; Hammell, Dana; Stinchcomb, Audra; Hassan, Hazem
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Use of Realistic Testing for Lifecycle Changes: A Proposal for Discussion and Possible Future Regulatory Guidance
Sandell, Dennis
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A Compartment-Quasi-3D Multiscale Approach for Drug Absorption, Transport, and Retention in the Human Lungs
Kannan, Ravishekar; Singh, Narender; Przekwas, Andrzej
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iBCS: 2. Mechanistic Modeling of Pulmonary Availability of Inhaled Drugs versus Critical Product Attributes
Backman, Per; Cabal, Antonio; Clark, Andy; Ehrhardt, Carsten; Forbes, Ben; Hastedt, Jayne; Hickey, Anthony; Hochhaus, Guenther; Jiang, Wenlei; Kassinos, Stavros; Kuehl, Philip J; Prime, David; Son, Yoen-Ju; Teague, Simon P; Tehler, Ulrika; Wylie, Jennifer
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Clinical, Pharmacokinetic, and In Vitro Studies to Support Bioequivalence of Ophthalmic Drug Products
Lionberger, Robert
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Validating Whole-Airway CFD Predictions of DPI Aerosol Deposition at Multiple Flow Rates
Longest, Worth; Tian, Geng; Khajeh Hosseini Dalasm, Nawab; Hindle, Michael
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Scientific Considerations for the Review and Approval of First Generic Mometasone Furoate Nasal Suspension Spray in the United States from the Bioequivalence Perspective
Liu, Qing; Absar, Mohammad; Saluja, Bhawana; Guo, Changning; Chowdhury, Badrul; Lionberger, Robert; Conner, Dale; Li, Bing