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Updated: Feb 14, 2026

Manufacturing Chimeric Antigen Receptor CAR T Cells for Adoptive Immunotherapy
Published on: December 17, 2019
A guide to manufacturing CAR T cell therapies
Philipp Vormittag1, Rebecca Gunn2, Sara Ghorashian3
1Karlsruhe Institute of Technology, Institute of Engineering in Life Sciences, Section IV: Biomolecular Separation Engineering, Fritz-Haber-Weg 2, 76131 Karlsruhe, Germany.
Abstract:
In recent years, chimeric antigen receptor (CAR) modified T cells have been used as a treatment for haematological malignancies in several phase I and II trials and with Kymriah of Novartis and Yescarta of KITE Pharma, the first CAR T cell therapy products have been approved. Promising clinical outcomes have yet been tempered by the fact that many therapies may be prohibitively expensive to manufacture. The process is not yet defined, far from being standardised and often requires extensive manual handling steps. For academia, big pharma and contract manufacturers it is difficult to obtain an overview over the process strategies and their respective advantages and disadvantages. This review details current production processes being used for CAR T cells with a particular focus on efficacy, reproducibility, manufacturing costs and release testing. By undertaking a systematic analysis of the manufacture of CAR T cells from reported clinical trial data to date, we have been able to quantify recent trends and track the uptake of new process technology. Delivering new processing options will be key to the success of the CAR-T cells ensuring that excessive manufacturing costs do not disrupt the delivery of exciting new therapies to the wide possible patient cohort.
Insights
Chimeric antigen receptor (CAR) T cell therapies show promise for blood cancers but face manufacturing challenges. This review analyzes CAR T-cell production processes to identify cost-effective and standardized strategies for wider patient access.
Area of Science:
- Immunology
- Oncology
- Biotechnology
Background:
- Chimeric antigen receptor (CAR) T cell therapy represents a significant advancement in treating hematological malignancies.
- Approved CAR T cell therapies like Kymriah and Yescarta demonstrate clinical efficacy but face manufacturing cost barriers.
Purpose of the Study:
- To provide a comprehensive overview of current CAR T cell production processes.
- To analyze the efficacy, reproducibility, manufacturing costs, and release testing of various CAR T cell manufacturing strategies.
- To identify trends and new technologies in CAR T cell manufacturing.
Main Methods:
- Systematic analysis of reported clinical trial data for CAR T cell manufacturing.
- Evaluation of different process strategies, focusing on their advantages and disadvantages.
- Quantification of recent trends and technology adoption in CAR T cell production.
Main Results:
- CAR T cell manufacturing is not yet standardized, often involving extensive manual steps.
- Significant variation exists in production processes, impacting cost and reproducibility.
- Analysis reveals trends in process technology adoption within CAR T cell manufacturing.
Conclusions:
- Standardizing CAR T cell manufacturing is crucial for reducing costs and improving accessibility.
- Developing efficient and reproducible processing options is essential for the widespread clinical success of CAR T cell therapies.
- Addressing manufacturing challenges will ensure these novel therapies reach a broader patient population.
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