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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Evaluation of Local Bioavailability of Metronidazole from Topical Formulations Using Dermal Microdialysis: Preliminary Studies in Yucatan Mini-Pig
Kuzma, Benjamin; Senemar, Sharareh; Ramezanli, Tannaz; Ghosh, Priyanka; Raney, Sam; Stagni, Grazia
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Inhalation Profile Modeling For Fluticasone Propionate Dry Powder Inhalers In Healthy Volunteers During A Four Way Crossover Bioequivalence Study
Kurumaddali, Abhinav; Schilling, Uta; Chen, Mongjen; Jiao, Yuanyuan; Seay, Brandon; Baumstein, Sandra; Abu-Hasan, Mutasim; Conti, Denise; Oguntimein, Oluwamurewa; Delvadia, Renishkumar; Winner, Lawrence; Tabulov, Christine; Saluja, Bhawana; Bulitta, Jurge
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A Semi-physiological Approach for Evaluating the Sensitivity of Pharmacokinetics to Detect Differences in Regional Lung Deposition of Orally-inhaled Drug Products (OIDPs)
Kurumaddali, Abhinav; Amini, Elham; Drescher, Stefanie; Chen, Mongjen; Bulitta, Jurgen; Hochhaus, Gunther
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Impact of Changes in Ophthalmic Emulsion Globule Size Distribution and Viscosity on Tear Film Thickness and Menisci Characteristics
Kumar, Sandeep; Cook, Nicholas; Gum, Glenwood; Manza, Linda; Naageshwaran, Vatsala; Lyulkin, Mathew; Xu, Xiaoming; Patel, Deval; Qu, Haiou; Walenga, Ross; Tan, Ming Liang; Babiskin, Andrew; Kaisar, Mohmmad Abul
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How Spray Metric Variability Impacts the Initial Deposition of Nasal Sprays
Kolanjiyil, Arun; Hosseini, Sana; Alfaifi, Ali; Golshahi, Laleh; Hindle, Michael; Longest, Worth
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On the Importance of Liquid Motion in Nasal Spray Delivery
Kolanjiyil, A; Golshahi, L; Longest, W
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Effect of Spray Momentum on Nasal Spray Droplet Transport and Deposition
Kolanjiyil, Arun; Hosseini, Sana; Manniello, Michele; Alfaifi, Ali; Farkas, Dale; Golshahi, Laleh; Longest, Worth
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Estimating Size-specific Numbers of Active Pharmaceutical Ingredient Particles in the Regional Deposition of a Nasal Spray
Kimbell, Julia; Schroeter, Jeffry; Tian, Geng; Walenga, Ross; Babiskin, Andrew; Delvadia, Renishkumar
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Simulating Nasal Spray Deposition: Effects of Spray Nozzle Presence in the Nasal Vestibule
Kimbell, Julia; Stricklin, Daniela; Schroeter, Jeffry
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Effect of Actuation Force on Simulated Regional Nasal Spray Deposition in a Healthy Nasal Cavity
Kimbell, Julia; Schroeter, Jeffry; Sheth, Poonam; Tian, Geng; Delvadia, Renishkumar; Saluja, Bhawana; Walenga, Ross