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 Inflow Conditioning for Dry Powder Inhalers
Singh, Gajendra; Lowe, Albyn; Azeem, Athiya; Cheng, Shaokoon; Chan, Hak-Kim; Walenga, Ross; Kourmatzis, Agisilaos
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Automated Classification of Dry Powder Inhaler Agglomerate Particles Using Cluster Analysis and Morphologically-directed Raman Spectroscopy
Ganley, William; Paddock, Alice; Farias, Goncalo; Penas, Abel Garcia; Shur, Jagdeep; Price, Robert
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Evaluating Particle Size Differences of Suspension-based Nasal Sprays Through In Vitro and Pharmacokinetic Approaches
Hochhaus, G; Amini, E; Berger, S; Shur, J; Kurumaddali, A; Schilling, U; Jiao, Y; Drescher, SK; Seay, B; Baumstein, SM; Abu Hasan, MN; Oguntimein, O; Carrasco, C; Winner, L; Delvadia, RR; Saluja, B; Price, R; Conti, DS; Dhapare, S; Newman, B; Bulitta, JB
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Development of a Stochastic Individual Path (SIP) Model for Predicting the Tracheobronchial Deposition of Pharmaceutical Aerosols: Effects of Transient Inhalation and Sampling the Airways
Tian, Geng; Longest, Worth; Su, Guoguang; Walenga, Ross; Hindle, Michael
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Cascade Impactor Equivalence Testing: Comparison of the Performance of the Modified Chi-Square Ratio Statistic (mCSRS) with the Original CSRS and EMA�۪s Average Bioequivalence Approach
Kurumaddali, Abhinav; Christopher, David; Sandell, Dennis; Strickland, Helen; Morgan, Beth; Bulitta, Juergen; Wiggerhorn, Christopher; Stein, Stephen; Lyapustina, Svetlana; Hochhaus, Guenther
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Predicting Systemic and Pulmonary Tissue Barrier Concentration of Orally Inhaled Drug Products
Singh, Narender; Kannan, Ravi; Arey, Ryan; Walenga, Ross; Babiskin, Andrew; Przekwas, Andrzej
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Generic Drug Device Combination Products: Regulatory and Scientific Considerations
Choi, Stephanie; Wang, Yan; Conti, Denise; Raney, Sam; Delvadia, Renishkumar; Leboeuf, Andrew; Witzmann, Kimberly
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Factors Influencing Plume Characteristics of Metered Dose Inhalers (MDIs) Following Passage through Bio-relevant Mouth-Throat Models
Dhapare, Sneha; Newman, Bryan; Svensson, Marten; Elfman, Peter; Sandell, Dennis; Winner, Larry; Bulitta, Jurgen; Hochhaus, Gunther
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Review of Complex Generic Drugs Delivered Through the Female Reproductive Tract: The Current Competitive Landscape and Emerging Role of Physiologically Based Pharmacokinetic Modeling to Support Development and Regulatory Decisions
Donnelly, Mark; Tsakalozou, Eleftheria; Sharan, Satish; Straubinger, Thomas; Bies, Robert; Zhao, Liang
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Effects of Formulation Variables on Lung Dosimetry of Albuterol Sulfate Suspension and Beclomethasone Dipropionate Solution Metered Dose Inhalers
Schroeter, Jeffry; Sheth, Poonam; Hickey, Anthony; Asgharian, Bahman; Price, Owen; Holt, Jay; Conti, Denise; Saluja, Bhawana