Bridging Regulatory Speed: A US–EU Perspective on Rapid Drug Approvals
Abstract
However, there is growing pressure on the regulatory community to provide life-saving drugs to patients sooner, and as such, they have come up with flexible approval processes that attempt to strike a balance between speed and sound evidence. This poster will highlight the key options available in the US and Europe. The FDA's Emergency Use Authorization allows promising drugs to be used on a temporary basis during public health crises before full data is available, while Accelerated Approval allows earlier approval for drugs based on surrogate markers that are reasonably likely to predict clinical benefit. The EMA's Conditional Marketing Authorization allows drugs to be marketed while full data is not available (with a commitment to complete studies later), while Accelerated Assessment is simply an expedited review process for drugs that address serious medical needs. These processes highlight the key differences in the degree of risk that each regulatory authority is willing to take, the amount of evidence required, and the post-approval obligations.
Conclusion: EU and US expedited approval pathways enable faster patient access to critical therapies but require strong post-approval evidence, regulatory harmonization, real-world data integration, and sustained scientific transparency to maintain safety and public trust.
Downloads
References
2. Coalition for Epidemic Preparedness Innovations. CEPI 100 Days Mission [Internet]. Oslo: Coalition for Epidemic Preparedness Innovations; 2023 [cited 2026 Mar 4]. Available from: https://cepi.net/100-days-mission/
3. Gandjour A. Inclusion of phase III clinical trial costs in health economic evaluations. BMC Health Serv Res. 2024 Oct 1;24(1):1158.
doi: https://doi.org/10.1186/s12913-024-11638-0
4. U.S. Food and Drug Administration. Expedited programs for serious conditions—Drugs and biologics [Internet]. Silver Spring (MD): U.S. Food and Drug Administration; 2014 [cited 2026 Mar 4]. Available from: https://www.fda.gov/regulatory-information/search-fda-guidance-documents/expedited-programs-serious-conditions-drugs-and-biologics
5. European Medicines Agency. Guideline on the centralised procedure [Internet]. Amsterdam: European Medicines Agency; 2024 [cited 2026 Mar 4]. Available from:
https://www.ema.europa.eu/en/human-regulatory/marketing-authorisation/centralised-procedure
6. European Medicines Agency. Conditional marketing authorisation: ten-year experience report [Internet]. London: European Medicines Agency; 2017 [cited 2026 Mar 4]. Available from:
https://www.ema.europa.eu/en/documents/report/conditional-marketing-authorisation-ten-year-experience-report_en.pdf
7. U.S. Food and Drug Administration. Emergency Use Authorization of medical products and related authorities [Internet]. Silver Spring (MD): U.S. Food and Drug Administration; 2023 [cited 2026 Mar 4]. Available from:
https://www.fda.gov/regulatory-information/search-fda-guidance-documents/emergency-use-authorization-medical-products-and-related-authorities
8. Beaver JA, Howie LJ, Pelosof L, Kim T, Liu J, Goldberg KB, Sridhara R, Blumenthal GM, Farrell AT, Keegan P, Pazdur R, Kluetz PG. A 25-year experience of US FDA accelerated approval of oncology drugs. Clin Cancer Res. 2018;24(13):2978-85.
doi: https://doi.org/10.1001/jamaoncol.2017.5618
9. Eichler HG, Oye K, Baird LG, Abadie E, Brown J, Drum CL, Ferguson J, Garner S, Honig P, Hukkelhoven M, Lim JCW, Lim R, Lumpkin MM, Neil G, O’Rourke B, Pezalla EJ, Shapiro M, Smith H, Sweeney F, Hirsch G. Adaptive licensing and drug approval evolution. Clin Pharmacol Ther. 2012;91(3):426–37.
doi: https://doi.org/10.1038/clpt.2011.353
10. World Health Organization. Good reliance practices in regulatory decision-making for medical products [Internet]. Geneva: World Health Organization; 2022 [cited 2026 Mar 4]. Available from: https://www.who.int/publications/i/item/9789240042145
11. Tsega C. Ensuring vaccine access through local production: the need for a harmonized and sustainable approach. J Law Biosci. 2025 Jul 1;12(2):lsaf020.
doi: https://doi.org/10.1093/jlb/lsaf020
12. Kaegi C, Wuest B, Crowley C, Boyman O. Systematic review of safety and efficacy of second- and third-generation CD20-targeting biologics in treating immune-mediated disorders. Front Immunol. 2022 Feb 2;12:788830.
doi: https://doi.org/10.3389/fimmu.2021.788830

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
The International Journal of Drug Regulatory affairs require a formal written transfer of copyright from the author(s) for each article published. We therefore ask you to complete and return this form, retaining a copy for your records. Your cooperation is essential and appreciated. Any delay will result in a delay in publication.
I/we have read and agree with the terms and conditions stated Page 2 of this agreement and I/we hereby confirm the transfer of all copyrights in and relating to the above-named manuscript, in all forms and media, now or hereafter known, to the International Journal of Drug Regulatory affairs, effective from the date stated below. I/we acknowledge that the IJDRA is relying on this agreement in publishing the above-named manuscript. However, this agreement will be null and void if the manuscript is not published in the IJDRA.
Download link for COPYRIGHT FORM





