Marton Chrystel, Clémenceau Béatrice, Dachy Guillaume, Demerle Clémence, Derenne Sophie, Ferrand Christophe, Giverne Camille, Latouche Jean-Baptiste, Lemée Ludovic, Martinet Jérémie, Bonig Halvard, Bensoussan Danièle, Chabannon Christian, Köhl Ulrike, Deschamps Marine, De Vos John, Diana Jean-Sébastien, Dougé Aurore, Forcade Edouard, Galaine Jeanne, Thiant Stéphanie, Galy Anne, Larghero Jérôme, Reppel Loïc, Viel Sébastien, Boyer Olivier, Yakoub-Agha Ibrahim
CHU Lille, Univ. Lille, Inserm, U1286 - INFINITE - Institute for Translational Research in Inflammation, F-59000, Lille, France.
Unité de Thérapie Cellulaire et Génique (UTCG), CHU de Nantes, Nantes, France.
Bone Marrow Transplant. 2025 May 29. doi: 10.1038/s41409-025-02637-8.
This position paper from the Bioproduction Working Group of the UNITC Consortium seeks to harmonize quality control (QC) procedures for academic production of autologous CAR-T cells. The primary objective is to standardize QC testing for batch release in academic cell therapy units. Academic CAR-T manufacturing under the hospital exemption pathway enables faster, more cost-effective production and the use of fresh cells, eliminating the need for cryopreservation. Standardized QC processes are critical to ensure consistent product quality and safety. This paper focuses on key QC measures, including mycoplasma detection using validated commercial kits or in-house methods with on-site validation, endotoxin testing via Limulus Amebocyte Lysate (LAL) or Recombinant Factor C (rFC) assays with validated protocols to prevent matrix interference, vector copy number (VCN) quantification through validated qPCR or ddPCR techniques, and potency assessment through IFN-γ ELISA following antigenic stimulation. Emphasizing method validation and standardized testing, this work underscores the importance of robust QC strategies to ensure the safety and efficacy of CAR-T cell therapies, with ongoing efforts dedicated to optimizing these processes. This workshop focuses on addressing the harmonization of some quality control (QC) measures required for the validation of academic CAR-T cell production :mycoplasma detection; endotoxin testing; vector copy number (VCN) quantification; potency testing and the use of surrogate markers, if applicable. Sterility testing and characterization/identity/purity assessments are not covered in this work.
本立场文件由UNITC联盟生物生产工作组撰写,旨在统一自体嵌合抗原受体T细胞(CAR-T)学术生产的质量控制(QC)程序。主要目标是规范学术性细胞治疗单位批次放行的QC检测。通过医院豁免途径进行的学术性CAR-T生产能够实现更快、更具成本效益的生产,并使用新鲜细胞,无需进行冷冻保存。标准化的QC流程对于确保产品质量和安全性的一致性至关重要。本文重点关注关键的QC措施,包括使用经过验证的商业试剂盒或经过现场验证的内部方法进行支原体检测,通过鲎试剂(LAL)或重组因子C(rFC)检测进行内毒素检测,并采用经过验证的方案以防止基质干扰,通过经过验证的定量聚合酶链反应(qPCR)或数字滴度PCR(ddPCR)技术进行载体拷贝数(VCN)定量,以及在抗原刺激后通过干扰素-γ酶联免疫吸附测定(ELISA)进行效力评估。强调方法验证和标准化检测,这项工作凸显了稳健的QC策略对于确保CAR-T细胞疗法安全性和有效性的重要性,目前正在努力优化这些流程。本次研讨会重点讨论学术性CAR-T细胞生产验证所需的一些质量控制(QC)措施的协调统一:支原体检测;内毒素检测;载体拷贝数(VCN)定量;效力检测以及适用时替代标志物的使用。本工作未涵盖无菌检测以及特性/身份/纯度评估。
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