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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Investigation of Surface Characteristics of Micronized Salbutamol Sulphate Particles Formulated in Different Propellants Using Integrated Scanning Electron Microscopy & Atomic Force Microscopy
Zapata Del Bano, Antonia; Silva, Lucas; Ulc, Filip; Hegrova’, Veronika; Deraime, Gregoire; Paul, Aurore; Han, Liangfeng; Bielski, Elizabeth; Newman, Bryan; Shur, Jag
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The Use of Atomic Force Microscope-Infrared Spectroscopy to Assess Co-localization of Fluticasone Propionate/Salmeterol Xinafoate/Lactose Monohydrate in Advair Diskus 100/50 and Wixela Inhub 100/50
Joseph, Blessy; Khanal, Dipesh; Bielski, Elizabeth; Newman, Bryan; Yilmaz, Huzeyfe; Ahmed, Snober; Boc, Susan; Chan, Hak-Kim; Holl, Mark Banaszak
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Enhanced PBPK-Based In Vitro to In Vivo Extrapolation Method to Support the Development of Pulmonary Drug Products
Mullin, J M; Le Merdy, Maxime; Chopski, Steven; Walenga, Ross; Bielski, Elizabeth; Boc, Susan; Clerman, Andrew; Newman, Bryan; Pineiro-Llanes, Janny; Eltanameli, Bassma; Cristofoletti, R
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Current Bioequivalence Approaches Utilized in Generic Drug Applications for Topical Drug Products Applied to the Skin
Xie, Lingxiao; Kelchen, Megan; Luke, Markham; Ghosh, Priyanka
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Bioequivalence Recommendations for Tretinoin-Containing Topical Products
Niu, Mengmeng; Luke, Markham C; Ghosh, Priyanka
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Development of Graphical Interface in R Shiny for PBPK Model-based Prediction and Simulation of Drug Delivery in the Female Reproductive Tract
Straubinger, Thomas; Li, Xinnong; Valicherla, Guru R; Zhang, Zhongfang; Achilles, Sharon L; Donnelly, Mark; Zhao, Liang; Tsakalozou, Eleftheria; Chen, Beatrice A; Rohan, Lisa C; Bies, Robert
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Development of an In Vitro Release Test Method for Miconazole Nitrate (MN) Vaginal Suppositories
Chauhan, Anjali; Xie, Lingxiao; Kelchen, Megan; Ghosh, Priyanka; Raney, Sam G.; Shen, Jie
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Topical Product Metamorphosis: Impact on Metronidazole In Vitro Skin Permeation Post-Application of Binary Mixture Formulations
Sharkawy, Asma; Williams, Adrian; Bunge, Annette; Guy, Richard; Ghosh, Priyanka; Van Osdol, William; Novakovic, Jasmina; Pettarin, Maximo; Spires, Jessica; Le Merdy, Maxime; Tsakalozou, Eleftheria; Delgado-Charro, M B
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Sensitivity of Charcoal Block PK Metrics to Differences in Regional Deposition for Budesonide and Formoterol Fumarate Dihydrate
Walenga, Ross; Tsakalozou, Eleftheria; Chopski, Steven; Fang, Lanyan; Zhao, Liang
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Dermal PBPK Model for Psoriatic Skin: Clobetasol Propionate Case Study
Novakovic, Jasmina; Van Osdol, WW; Spires, J; Le Merdy, M; Tsakalozou, E; Ghosh, P; Lukacova, Viera