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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Effect of Controlled Heat Application on Topical Diclofenac Formulations Evaluated by In Vitro Permeation Tests (Ivpt) using Porcine and Human Skin
Thomas, Sherin; Shin, Soo Hyeon; Hammell, Dana; Hassan, Hazem; Stinchcomb, Audra
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In Vitro Release Testing Method Development for Ophthalmic Ointments
Bao, Quanying; Shen, Jie; Jog, Rajan; Zhang, Carmen; Newman, Bryan; Wang, Yan; Choi, Stephanie; Burgess, Diane
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Analyzing ophthalmic suspension particle size distributions using laser diffraction: Placebo background subtraction method
Vo, Anh; Feng, Xin; Smith, William; Zhu, Dongkai; Patel, Mehulkumar; Kozak, Darby; Wang, Yan; Zheng, Jiwen; Ashraf, Muhammad; Xu, Xiaoming
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Importance of Spray-Wall Interaction and Post-Deposition Liquid Motion in the Transport and Delivery of Pharmaceutical Nasal Sprays
Kolanjiyil, Arun V; Alfaifi, Ali; Aladwani, Ghali; Golshahi, Laleh; Longest, Worth
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Influence of In Vitro Release Methods on Assessment of Tobramycin Ophthalmic Ointments
Patere, Shilpa; Newman, Bryan; Wang, Yan; Choi, Stephanie; Mekjaruskul, Catheleeya; Jay, Michael; Lu, Xiuling
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Mechanistic Oral Absorption Modeling and Simulation for Formulation Development and Bioequivalence Evaluation: Report of an FDA Public Workshop
Zhang, Xinyuan; Duan, John; Kesisoglou, Filippos; Novakovic, Jasmina; Amidon, Gordon; Jamei, Masoud; Lukacova, Viera; Eissing, Thomas; Tsakalozou, Eleftheria; Zhao, Liang; Lionberger, Robert
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Scanning Analysis of Sequential Semisolvent Vapor Impact To Study Naltrexone Release from Poly(lactide-co-glycolide) Microparticles
Garner, John; Skidmore, Sarah; Hadar, Justin; Park, Haesun; Park, Kinam; Otte, Andrew; Jhon, Young Kuk; Xu, Xiaoming; Qin, Bin; Wang, Yan
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Bioequivalence for Locally Acting Nasal Spray and Nasal Aerosol Products: Standard Development and Generic Approval
Li, Bing; Jin, Feiyan; Lee, Sau; Bai, Tao; Chowdhury, Badrul; Caramenico, Hoainhon; Conner, Dale
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Asymmetric Flow Field Flow Fractionation for the Characterization of Globule Size Distribution in Complex Formulations: A Cyclosporine Ophthalmic Emulsion Case
Qu, Haiou; Wang, Jiang; Wu, Yong; Zheng, Jiwen; Krishnaiah, Yellela; Absar, Mohammad; Choi, Stephanie; Ashraf, Muhammad; Cruz, Celia; Xu, Xiaoming
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In Silico Models of Aerosol Delivery to the Respiratory Tract – Development and Applications
Holbrook, Landon