GDUFA Research Outcomes
Oral and Parenteral Products
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 oral and parenteral generic products. The advancement of research in this area focuses on understanding of how ingredients in oral and parenteral drug products may modulate bioavailability, and on improving biorelevant dissolution methods as well as in silico models to support the expansion of biowaivers and to support global harmonization under ICH M13A[1]. This includes developing evidence to support the feasibility of biowaivers for immediate release (IR) oral drug products with differences in formulations larger than currently recommended in FDA guidance, or for IR oral drug products that do not demonstrate comparable dissolution profiles across strengths. It also includes establishing approaches to manage potential risks related to subject safety more consistently when developing clinical BE study recommendations and elucidating potential failure modes for BE with special populations (e.g., pediatric or geriatric patients) to improve tools and methodologies that can be incorporated into BE study recommendations which ensure the equivalence of therapeutic outcomes in diverse populations.
Outcomes including scientific publications, presentations, and posters arising from GDUFA-funded research in this priority area are available in this section.
[1] International Council for Harmonisation of Technical Requirements for Pharmaceuticals for Human Use (ICH) Guideline M13A: Bioequivalence for Immediate-Release Solid Oral Dosage Forms
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Characterization of Paclitaxel and Albumin Oligomeric Status in Abraxane during Storage
Jiang, Wenlei
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Strategies for Correcting Peak Fronting of Oxycodone Hydrochloride, Naloxone Hydrochloride and Related Substances Observed in Reversed – Phase Liquid Chromatography
Ibrahim, Ahmed; Wang, Fang; Hollenbeck, Gary; Mostofa, Agm; Sun, Wei-Jhe; Boyce, Heather; Al Ghabeish, Manar; Hoag, Stephen
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A Statistical Bioequivalence Approach Based on Earth Mover’s Distance for Equivalence Testing of Particle Size Distribution
Hu, Meng; Jiang, Xiaohui; Absar, Mohammad; Choi, Stephanie; Shen, Meiyu; Weng, Yuting; Zhao, Liang; Lionberger, Robert
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Dynamic Change in pH by Low Buffer Capacity of Gastrointestinal Fluids Along the Human Gastrointestinal Tract: Implications for In Vivo Dissolution and Absorption of Ionizable Compounds
Hens, Bart; Tsume, Yasuhiro; Bermejo, Marival; Paixao, Paulo; Koenigsknecht, Mark; Baker, Jason; Hasler, William; Lionberger, Robert; Fan, Jianghong; Dickens, Joseph; Shedden, Kerby; Wen, Bo; Wysocki, Jeffrey; Loebenberg, Raimar; Lee, Allen; Frances, Ann; Amidon, Greg; Yu, Alex; Benninghoff, Gail; Salehi, Niloufar; Talattof, Arjang; Sun, Duxin; Amidon, Gordon L
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Exploring Dissolution, Supersaturation and Precipitation of Posaconazolein the Gastrointestinal Simulator (GIS) In Parallel With Visualization of Precipitated Drug by Microscopy Studies
Hens, Bart; Bermejo, Marival; Tsume, Yasuhiro; Gonzalez-Alvarez, Isabel; Ruan, Hao; Matsui, Kazuki; Amidon, Greg; Cavanagh, Katie; Kuminek, Gislaine; Rodriguez-Hornedo, Nair; Amidon, Gordon
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Measuring Fasted State Gastric Motility Before and After a Standard BA/BE 8 OZ Drink of Water: Validation of new MRI Imaging Protocols Against Concomitant Perfused Manometry in Healthy Participants
Heissam, Khaled; Abrehart, Nichola; Hoad, Caroline; Wright, Jeff; Menys, Alex; Murray, Kathryn; Glover, Paul; Hebbard, Geoffrey; Gowland, P A; Baker, Jason; Hasler, W L; Spiller, R C; Corsetti, Maura; Brasseur, James; Hens, Bart; Shedden, Kerby; Dickens, J; Mudie, D M; Amidon, G E; Amidon, G L; Marciani, L
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Integrating Cellular Disposition Of Doxorubicin Into A Multiscale Physiologically Based Pharmacokinetic Model In Mice And Scale-Up To Humans.
He, Hua; Wu, Yun; Liu, Can; Cao, Yanguang
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Evaluation of U.S. FDA Approved Generic Oral Solution Products
Hakeem, Susan; Huang, Yih-Chain; Jiang, Wenlei
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Quantitative Modeling and Simulation to Evaluate Alternative Approaches to be Used in COVID-19 Interrupted Bioequivalence Studies
Gong, Yuqing; Feng, Kairui; Lee, Jieon; Pan, Yuzhuo; Bai, Tao; Li, Bing; Kim, Carol; Yoon, Miyoung; Zhang, Peijue; Fang, Lanyan; Zhao, Liang
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Mechanical Response of Nifedipine Extended-release Tablet During in Vitro Dissolution Testing
Gao, Zongming; Ngo, Diem; Ye, Wei; Rodriguez, Jason; Keire, David; Sun, Dajun; Wen, Hong; Jiang, Wenlei