AUTHOR=Capelli Chiara , Cuofano Carolina , Pavoni Chiara , Frigerio Simona , Lisini Daniela , Nava Sara , Quaroni Michele , Colombo Valentina , Galli Francesco , Bezukladova Svetlana , Panina-Bordignon Paola , Gaipa Giuseppe , Comoli Patrizia , Cossu Giulio , Martino Gianvito , Biondi Andrea , Introna Martino , Golay Josée TITLE=Potency assays and biomarkers for cell-based advanced therapy medicinal products JOURNAL=Frontiers in Immunology VOLUME=14 YEAR=2023 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2023.1186224 DOI=10.3389/fimmu.2023.1186224 ISSN=1664-3224 ABSTRACT=

Advanced Therapy Medicinal Products (ATMPs) based on somatic cells expanded in vitro, with or without genetic modification, is a rapidly growing area of drug development, even more so following the marketing approval of several such products. ATMPs are produced according to Good Manufacturing Practice (GMP) in authorized laboratories. Potency assays are a fundamental aspect of the quality control of the end cell products and ideally could become useful biomarkers of efficacy in vivo. Here we summarize the state of the art with regard to potency assays used for the assessment of the quality of the major ATMPs used clinic settings. We also review the data available on biomarkers that may substitute more complex functional potency tests and predict the efficacy in vivo of these cell-based drugs.