RT Journal Article T1 The Essential Need for a Validated Potency Assay for Cell-Based Therapies in Cardiac Regenerative and Reparative Medicine. A Practical Approach to Test Development A1 Gómez Cid, Lidia A1 Grigorian Shamagian, Lilian A1 Sanz Ruiz, Ricardo A1 Nava, Ana S. De La A1 Fernández, Ana I. A1 Fernández Santos, María Eugenia A1 Fernández-Avilés Díaz, Francisco Jesús AB Biological treatments are one of the medical breakthroughs in the twenty-first century. The initial enthusiasm pushed the field towards indiscriminatory use of cell therapy regardless of the pathophysiological particularities of underlying conditions. In the reparative and regenerative cardiovascular field, the results of the over two decades of research in cell-based therapies, although promising still could not be translated into clinical scenario. Now, when we identified possible deficiencies and try to rebuild its foundations rigorously on scientific evidence, development of potency assays for the potential therapeutic product is one of the steps which will bring our goal of clinical translation closer. Although, highly challenging, the potency tests for cell products are considered as a priority by the regulatory agencies. In this paper we describe the main characteristics and challenges for a cell therapy potency test focusing on the cardiovascular field. Moreover, we discuss different steps and types of assays that should be taken into consideration for an eventual potency test development by tying together two fundamental concepts: target disease and expected mechanism of action. PB Springer SN 2629-3269 YR 2021 FD 2021-08-31 LK https://hdl.handle.net/20.500.14352/4722 UL https://hdl.handle.net/20.500.14352/4722 LA eng NO Gómez Cid, L., Grigorian Shamagian, L., Sanz Ruiz, R. et al. «The Essential Need for a Validated Potency Assay for Cell-Based Therapies in Cardiac Regenerative and Reparative Medicine. A Practical Approach to Test Development». Stem Cell Reviews and Reports, vol. 17, n.o 6, diciembre de 2021, pp. 2235-44. DOI.org (Crossref), https://doi.org/10.1007/s12015-021-10244-5. NO CRUE-CSIC (Acuerdos Transformativos 2021) NO Instituto de Salud Carlos III/Ministerio de Ciencia, Innovación y Universidades (España) DS Docta Complutense RD 9 may 2025