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As tendon organoids move closer to clinical application,  Author contributions
            regulatory  and  economic  considerations  become
            increasingly critical. Regulatory pathways, however, remain   Conceptualization: Xiao Chen, Zi Yin, Yiwen Xue, Yixi Wu
            nebulous. Regulatory agencies like the Food and Drug   Data curation: Yiwen Xue, Yixi Wu
            Administration (FDA) currently lack specific guidelines   Supervision: Hong Zhang, Xiao Chen, Huanhuan Liu,
                                                                 Zi Yin
            for organoid-based products. In December 2022, the   Project administration: Yiwen Xue, Hong Zhang, Xiao
            United States enacted the FDA Modernization Act 2.0,   Chen, Huanhuan Liu, Zi Yin
            amending the Food, Drug, and Cosmetic Act to remove   Visualization: Yiwen Xue, Yixi Wu
            the compulsory requirement for animal experimentation   Writing–original draft: Yiwen Xue, Yixi Wu
            in drug development. This legislative change permits the   Writing–review & editing: All authors
            use of alternative methods, including organoid models, for
            evaluating drug safety and efficacy before human clinical   Ethics approval and consent to participate
            trials. More specific official regulations for replacing
            animals with organoids in experiments are forthcoming,   Not applicable.
            necessitating collaborations  between researchers and
            policymakers.  Adaptive licensing frameworks, similar   Consent for publication
                        194
            to those proposed for gene therapies, may accelerate   Not applicable.
            translation while ensuring safety. Concurrently, cost-
            effectiveness analyses must address whether organoid-  Availability of data
            based therapies offer advantages over existing options, such   Not applicable.
            as autografts, particularly in resource-limited settings.
                                                              References
            7. Conclusion
                                                              1.   Gomez-Florit M, Labrador-Rached CJ, Domingues R,
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            such  as  degenerative  rotator  cuff  disease.  Ultimately,  the   3.   Nourissat G, Berenbaum F, Duprez D. Tendon injury:
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            Acknowledgments                                   4.   Abat F, Alfredson H, Cucchiarini M, et al. Current trends
                                                                 in  tendinopathy:  Consensus  of  the  ESSKA basic  science
            We thank Dr.  Tian Qin for generously providing      committee. Part I: Biology, biomechanics, anatomy and an
            experimental images of tendon organoids, enhancing the   exercise-based approach. J Exp Orthop. 2017;4(1):18.
            visual clarity and scientific rigor of the graphical content.     doi: 10.1186/s40634-017-0092-6
            Funding                                           5.   Xu Y, Murrell GA. The basic science of tendinopathy. Clin
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            This work was supported by the National Key Research
            and Development Program of China (2022YFA1106800),      doi: 10.1007/s11999-008-0286-4
            National Natural Science Foundation of China grants   6.   Teunis T, Lubberts B, Reilly BT, Ring D. A  systematic
            (82222044, T2121004, 32271406), Key R&D Program      review and pooled analysis of the prevalence of rotator
            of   Zhejiang  (2024SSYS0026),  and  Fundamental     cuff disease with increasing age.  J  Shoulder Elbow Surg.
            Research Funds for the Zhejiang Provincial Universities   2014;23(12):1913-1921.
            (K20240141).                                         doi: 10.1016/j.jse.2014.08.001
            Conflict of interest                              7.   Ning C, Li P, Gao C,  et al. Recent advances in tendon
                                                                 tissue engineering strategy.  Front Bioeng Biotechnol.
            The authors declared that they have no competing interests.   2023;11:1115312.


            Volume 1 Issue 3 (2025)                         18                           doi: 10.36922/OR025170016
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