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Updated: Jun 17, 2026

A GMP-Compliant Procedure for the Generation of Gene-Modified T cells
Published on: October 6, 2023
Overview of gene therapy clinical progress including cancer treatment with gene-modified T cells
Malcolm K Brenner1, Fatma V Okur
1Center for Cell and Gene Therapy, Baylor College of Medicine, The Methodist Hospital, Houston, TX 77030-2303, USA. mbrenner@bcm.edu
Abstract:
It is now twenty years since the first legal gene transfer studies were approved, and there has been considerable disappointment in the slow rate of progress that followed the initial studies. Gradually, however, as the limitations of available vectors are acknowledged and overcome, and with advances in our understanding of the molecular and cell biology of genetic diseases and of cancer, unequivocal successes are now being reported. In this paper we describe the remaining major roadblocks to successful gene therapy and outline approaches to overcome them. We also illustrate how genetically modified immune system cells are already being used for the effective treatment of hematological and other malignancies, and how these approaches are being modified so that they can be effective in treating a broader range of malignancies.
Insights
Gene therapy has seen slow progress but is now reporting successes by overcoming vector limitations and advancing disease understanding. Genetically modified immune cells show promise for treating various cancers, with ongoing modifications for broader efficacy.
Area of Science:
- Molecular Biology
- Cell Biology
- Immunology
- Oncology
Background:
- Twenty years after the first legal gene transfer studies, progress in gene therapy has been slower than initially anticipated.
- Initial challenges with vector limitations and a developing understanding of genetic diseases and cancer have tempered early expectations.
- Despite a slow start, recent advances in molecular and cell biology are leading to significant breakthroughs.
Purpose of the Study:
- To describe the major remaining obstacles in achieving successful gene therapy.
- To outline strategies and approaches for overcoming these gene therapy roadblocks.
- To illustrate the current and potential applications of genetically modified immune cells in treating malignancies.
Main Methods:
- Review of current gene therapy limitations and proposed solutions.
- Analysis of advances in molecular and cell biology relevant to genetic diseases and cancer.
- Examination of the use of genetically modified immune cells for cancer treatment.
Main Results:
- Unequivocal successes in gene therapy are now being reported due to overcoming vector limitations.
- Genetically modified immune cells are effectively treating hematological malignancies and other cancers.
- Ongoing modifications are expanding the applicability of these cellular therapies to a wider range of malignancies.
Conclusions:
- Gene therapy is transitioning from a field of disappointment to one of demonstrable success.
- Genetically modified immune cells represent a powerful and evolving therapeutic strategy for cancer treatment.
- Further research and modification of these cellular approaches promise broader efficacy across diverse malignancies.
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