The article reviews international experience in market access, health technology assessment (HTA), and reimbursement models for advanced therapy medicinal products (ATMPs). This diverse group of therapies, including gene, cell, and tissue-engineering products, represents some of the most innovative medicines, but at the same time poses significant challenges to regulatory, health economic, and financial systems.
Access to ATMPs is shaped by the interaction between three main systems: regulatory approval, health technology assessment, and payment or reimbursement mechanisms. The specificities of these therapies – high clinical value but often limited evidence base, small number of patients in clinical trials, and use of surrogate endpoints – complicate the evaluation process. In addition, the cost of the therapies is very high and the expenditure is usually concentrated in a short period, as it is often a single treatment.
The article analyzes various regulatory mechanisms aimed at accelerating access to innovative therapies for serious diseases and unmet medical needs. These include accelerated assessment procedures, conditional use authorisations, early access programmes, and special regulatory statuses that support the development of new therapies. These tools allow earlier patient access to treatment, while requiring additional clinical data generation after the product is authorised.
Special attention is paid to practices in the European Union, where the European Medicines Agency uses mechanisms such as accelerated assessment and conditional marketing authorisation. Despite the reduction in the time to regulatory decision, access to therapies remains highly dependent on subsequent national decisions on pricing, reimbursement, and organisational requirements for implementation.
In conclusion, it is highlighted that the successful implementation of ATMPs requires a coordinated approach between regulators, HTA authorities, and payers, as well as the development of new payment models and uncertainty management that ensure sustainable patient access to these high-tech therapies.
Rejon-Parrilla JC, Espin J, Garner S, Kniazkov S, Epstein D. Pricing and reimbursement mechanisms for advanced therapy medicinal products in 20 countries. Front Pharmacol. 2023 Nov 28;14:1199500. doi:10.3389/fphar.2023.1199500
Angelis A, Naci H, Hackshaw A. Recalibrating Health Technology Assessment Methods for Cell and Gene Therapies. PharmacoEconomics. 2020 Dec;38(12):1297–308. doi:10.1007/s40273-020-00956-w
Ossandon H, Armijo N, Vargas C, Repetto GM, Espinoza MA. Challenges for gene therapy in the financial sustainability of health systems: a scoping review. Orphanet J Rare Dis. 2024 Jun 24;19(1):243. doi:10.1186/s13023-024-03249-z
Avşar TS, Elvidge J, Hawksworth C, Kenny J, Németh B, Callenbach M, et al. Linking Reimbursement to Patient Benefits for Advanced Therapy Medicinal Products and Other High-Cost Innovations: Policy Recommendations for Outcomes-Based Agreements in Europe. Value Health. 2024 Nov;27(11):1497–506. doi:10.1016/j.jval.2024.07.007
Iglesias-López C, Agustí A, Vallano A, Obach M. Financing and Reimbursement of Approved Advanced Therapies in Several European Countries. Value Health. 2023 Jun;26(6):841–53. doi:10.1016/j.jval.2022.12.014
European Medicines Agency (EMA). Accelerated assessment [Internet]. EMA; last updated 8.9.2025. Available from: https://www.ema.europa.eu/en/human-regulatory-overview/marketing-authorisation/accelerated-assessment.
European Medicines Agency (EMA). Conditional marketing authorisation [Internet]. EMA. Available from: https://www.ema.europa.eu/en/human-regulatory-overview/marketing-authorisation/conditional-marketing-authorisation.
European Medicines Agency (EMA). PRIME – priority medicines [Internet]. EMA . Available from: https://www.ema.europa.eu/en/human-regulatory-overview/research-development/prime-priority-medicines.
European Medicines Agency (EMA). Guidance for applicants seeking access to the PRIME scheme [Internet]. EMA; 3.10.2024. Available from: https://www.ema.europa.eu/en/documents/other/european-medicines-agency-guidance-applicants-seeking-access-prime-scheme_en.pdf.
U.S. Food and Drug Administration (FDA). Accelerated Approval Program [Internet]. FDA; 24.11.2025. Available from: https://www.fda.gov/drugs/nda-and-bla-approvals/accelerated-approval-program.
U.S. Food and Drug Administration (FDA). Fast Track, Breakthrough Therapy, Accelerated Approval, Priority Review [Internet]. FDA; 12.06.2023. Available from: https://www.fda.gov/patients/learn-about-drug-and-device-approvals/fast-track-breakthrough-therapy-accelerated-approval-priority-review.
U.S. Food and Drug Administration (FDA). Expedited Programs for Regenerative Medicine Therapies for Serious Conditions – Guidance for Industry [Internet]. FDA; 25.09.2025. Available from: https://www.fda.gov/regulatory-information/search-fda-guidance-documents/expedited-programs-regenerative-medicine-therapies-serious-conditions-0.
U.S. Food and Drug Administration (FDA). Regenerative Medicine Advanced Therapy Designation [Internet]. FDA; 4.11.2025. Available from: https://www.fda.gov/vaccines-blood-biologics/cellular-gene-therapy-products/regenerative-medicine-advanced-therapy-designation.
Pharmaceuticals and Medical Devices Agency (PMDA). Regenerative Medical Products [Internet]. PMDA. Available from: https://www.pmda.go.jp/english/review-services/reviews/0003.html.
Noda S, Kobayashi Y, Okura N, Shinohara K, Asano J, Matsumoto J. Regulatory advancements in Japan’s conditional and time-limited approval scheme for regenerative medical products: the first guidance on the approval scheme and the second review for full approval of the first conditional and time-limited approved cellular product, HeartSheet. Cytotherapy. 2025 Jun;27(6):700–8. doi:10.1016/j.jcyt.2025.02.010
Dahiya A, Singh K, Ashish A, Nipun null, Bhadyaria A, Thakur S, et al. Global harmonization in advanced therapeutics: balancing innovation, safety, and access. Pers Med. 2025 Jun;22(3):181–91. doi:10.1080/17410541.2025.2494980
Nagai S. Flexible and Expedited Regulatory Review Processes for Innovative Medicines and Regenerative Medical Products in the US, the EU, and Japan. Int J Mol Sci. 2019 Aug 3;20(15):3801. doi:10.3390/ijms20153801
Medicines and Healthcare products Regulatory Agency (MHRA). Innovative Licensing and Access Pathway (ILAP) [Internet]. GOV.UK; 30.1.2025. Available from: https://www.gov.uk/government/publications/innovative-licensing-and-access-pathway-ilap.
National Institute for Health and Care Excellence (NICE). Our role in the Innovative Licensing and Access Pathway (ILAP) [Internet]. NICE. Available from: https://www.nice.org.uk/what-nice-does/life-sciences-how-to-get-your-product-to-market/our-role-in-the-innovative-licensing-and-access-pathway-ilap.
Medicines and Healthcare products Regulatory Agency (MHRA). Early Access to Medicines Scheme – Information for Applicants [Internet]. GOV.UK; last updated 1.4.2025. Available from: https://www.gov.uk/guidance/apply-for-the-early-access-to-medicines-scheme-eams.
Medicines and Healthcare products Regulatory Agency (MHRA). Early Access to Medicines Scheme – Overview [Internet]. GOV.UK; last updated 12.11.2025. Available from: https://www.gov.uk/government/publications/early-access-to-medicines-scheme-overview.
Jönsson B, Hampson G, Michaels J, Towse A, Von Der Schulenburg JMG, Wong O. Advanced therapy medicinal products and health technology assessment principles and practices for value-based and sustainable healthcare. Eur J Health Econ. 2019 Apr;20(3):427–38. doi:10.1007/s10198-018-1007-x
Drummond MF, Neumann PJ, Sullivan SD, Fricke FU, Tunis S, Dabbous O, et al. Analytic Considerations in Applying a General Economic Evaluation Reference Case to Gene Therapy. Value Health. 2019 Jun;22(6):661–8. doi:10.1016/j.jval.2019.03.012
Drummond M, Ciani O, Fornaro G, Jommi C, Dietrich ES, Espin J, et al. How are health technology assessment bodies responding to the assessment challenges posed by cell and gene therapy? BMC Health Serv Res. 2023 May 13;23(1):484. doi:10.1186/s12913-023-09494-5
Ten Ham RMT, Frederix GWJ, Wu O, Goettsch W, Leufkens HGM, Klungel OH, et al. Key Considerations in the Health Technology Assessment of Advanced Therapy Medicinal Products in Scotland, The Netherlands, and England. Value Health. 2022 Mar;25(3):390–9. doi:10.1016/j.jval.2021.09.012
National Institute for Health and Care Excellence (NICE). NICE real-world evidence framework (Corporate document ECD9). Published 23 June 2022.
Olry De Labry-Lima A, Ponce-Polo A, García-Mochón L, Ortega-Ortega M, Pérez-Troncoso D, Epstein D. Challenges for Economic Evaluations of Advanced Therapy Medicinal Products: A Systematic Review. Value Health. 2023 Jan;26(1):138–50. doi:10.1016/j.jval.2022.07.004
Hardy WAS, Hughes DA. Methods for Extrapolating Survival Analyses for the Economic Evaluation of Advanced Therapy Medicinal Products. Hum Gene Ther. 2022 Sep 1;33(17–18):845–56. doi:10.1089/hum.2022.056
Latimer NR. Survival Analysis for Economic Evaluations Alongside Clinical Trials—Extrapolation with Patient-Level Data: Inconsistencies, Limitations, and a Practical Guide. Med Decis Making. 2013 Aug;33(6):743–54. doi:10.1177/0272989X12472398
Huygens SA, Versteegh MM, Vegter S, Schouten LJ, Kanters TA. Methodological Challenges in the Economic Evaluation of a Gene Therapy for RPE65-Mediated Inherited Retinal Disease: The Value of Vision. PharmacoEconomics. 2021 Apr;39(4):383–97. doi:10.1007/s40273-021-01003-y
Fenwick E, Steuten L, Knies S, Ghabri S, Basu A, Murray JF, et al. Value of Information Analysis for Research Decisions—An Introduction: Report 1 of the ISPOR Value of Information Analysis Emerging Good Practices Task Force. Value Health. 2020 Feb;23(2):139–50. doi:10.1016/j.jval.2020.01.001
Gonçalves E. Advanced therapy medicinal products: value judgement and ethical evaluation in health technology assessment. Eur J Health Econ. 2020 Apr;21(3):311–20. doi:10.1007/s10198-019-01147-x
Gonçalves E. CAR-T cell therapies: patient access and affordability solutions. Future Sci OA. 2025 Dec 31;11(1):2483613. doi:10.1080/20565623.2025.2483613
Michelsen S, Nachi S, Van Dyck W, Simoens S, Huys I. Barriers and Opportunities for Implementation of Outcome-Based Spread Payments for High-Cost, One-Shot Curative Therapies. Front Pharmacol. 2020 Dec 8;11:594446. doi:10.3389/fphar.2020.594446
Dabbous M, Chachoua L, Caban A, Toumi M. Managed Entry Agreements: Policy Analysis From the European Perspective. Value Health. 2020 Apr;23(4):425–33. doi:10.1016/j.jval.2019.12.008
Jørgensen J, Hanna E, Kefalas P. Outcomes-based reimbursement for gene therapies in practice: the experience of recently launched CAR-T cell therapies in major European countries. J Mark Access Health Policy. 2020 Jan 1;8(1):1715536. doi:10.1080/20016689.2020.1715536
Horrow C, Kesselheim AS. Confronting High Costs And Clinical Uncertainty: Innovative Payment Models For Gene Therapies: Study examines costs, clinical uncertainties, and payment models for gene therapies. Health Aff (Millwood). 2023 Nov 1;42(11):1532–40. doi:10.1377/hlthaff.2023.00527
Ferrario A, Arāja D, Bochenek T, Čatić T, Dankó D, Dimitrova M, et al. The Implementation of Managed Entry Agreements in Central and Eastern Europe: Findings and Implications. PharmacoEconomics. 2017 Dec;35(12):1271–85. doi:10.1007/s40273-017-0559-4
Rotar AM, Preda A, Löblová O, Benkovic V, Zawodnik S, Gulacsi L, et al. Rationalizing the introduction and use of pharmaceutical products: The role of managed entry agreements in Central and Eastern European countries. Health Policy. 2018 Mar;122(3):230–6. doi:10.1016/j.healthpol.2018.01.006
Xoxi E, Facey KM, Cicchetti A. The Evolution of AIFA Registries to Support Managed Entry Agreements for Orphan Medicinal Products in Italy. Front Pharmacol. 2021 Aug 10;12:699466. doi:10.3389/fphar.2021.699466
Jørgensen J, Kefalas P. Annuity payments can increase patient access to innovative cell and gene therapies under England’s net budget impact test. J Mark Access Health Policy. 2017;5(1):1355203. doi:10.1080/20016689.2017.1355203
Trotta F, Guerrizio MA, Di Filippo A, Cangini A. Financial Outcomes of Managed Entry Agreements for Pharmaceuticals in Italy. JAMA Health Forum. 2023 Dec 28;4(12):e234611. doi:10.1001/jamahealthforum.2023.4611
Rémuzat C, Urbinati D, Mzoughi O, El Hammi E, Belgaied W, Toumi M. Overview of external reference pricing systems in Europe. J Mark Access Health Policy. 2015 Jan;3(1):27675. doi:10.3402/jmahp.v3.27675
Habl C, Schneider P, Németh G, Šebesta R. Euripid Guidance Document on External Reference Pricing (ERP). Final version 8.1. 2018.
European Commission. Commission Staff Working Document – Impact Assessment accompanying the proposal relating to the transparency of measures regulating the prices of medicinal products and their inclusion in public health insurance systems (SWD/2012/0030). 2012.
NHS England. Appraisal and Funding of Cancer Drugs from July 2016 (Cancer Drugs Fund Standard Operating Procedure). 2016.
NHS England. The Innovative Medicines Fund: Principles. 2022.
Agenzia Italiana del Farmaco (AIFA). Elenchi dei farmaci che accedono ai fondi dei farmaci innovativi istituiti ai sensi della Legge di Bilancio 2017.
Rachet-Jacquet L, Toulemon L, Rochaix L. Hospital payment schemes and high-priced drugs: Evidence from the French Add-on List. Health Policy. 2021 Jul;125(7):923–9. doi:10.1016/j.healthpol.2021.04.012