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Cornetta K, Yao J, House K, Duffy L, Adusumilli PS, Beyer R, Booth C, Brenner M, Curran K, Grilley B, Heslop H, Hinrichs CS, Kaplan RN, Kiem HP, Kochenderfer J, Kohn DB, Mailankody S, Norberg SM, O'Cearbhaill RE, Pappas J, Park J, Ramos C, Ribas A, Rivière I, Rosenberg SA, Sauter C, Shah NN, Slovin SF, Thrasher A, Williams DA, Lin TY. Replication competent retrovirus testing (RCR) in the National Gene Vector Biorepository: No evidence of RCR in 1,595 post-treatment peripheral blood samples obtained from 60 clinical trials. Mol Ther 2023; 31:801-809. [PMID: 36518078 PMCID: PMC10014217 DOI: 10.1016/j.ymthe.2022.12.006] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2022] [Revised: 11/24/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
The clinical impact of any therapy requires the product be safe and effective. Gammaretroviral vectors pose several unique risks, including inadvertent exposure to replication competent retrovirus (RCR) that can arise during vector manufacture. The US FDA has required patient monitoring for RCR, and the National Gene Vector Biorepository is an NIH resource that has assisted eligible investigators in meeting this requirement. To date, we have found no evidence of RCR in 338 pre-treatment and 1,595 post-treatment blood samples from 737 patients associated with 60 clinical trials. Most samples (75%) were obtained within 1 year of treatment, and samples as far out as 9 years after treatment were analyzed. The majority of trials (93%) were cancer immunotherapy, and 90% of the trials used vector products produced with the PG13 packaging cell line. The data presented here provide further evidence that current manufacturing methods generate RCR-free products and support the overall safety profile of retroviral gene therapy.
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Affiliation(s)
- Kenneth Cornetta
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA; Brown Center for Immunotherapy, Indiana University School of Medicine, Indianapolis, IN, USA.
| | - Jing Yao
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Kimberley House
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | - Lisa Duffy
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA
| | | | | | - Claire Booth
- Molecular and Cellular Immunology, UCL Great Ormond Street Institute of Child Health, London, UK
| | - Malcolm Brenner
- Center for Cell and Gene Therapy Baylor College of Medicine, Houston TX, USA
| | - Kevin Curran
- Memorial Sloan Kettering Cancer Center, Department of Pediatrics, New York, NY, USA; Weill Cornell Medical College, Department of Pediatrics, New York, NY, USA
| | - Bambi Grilley
- Center for Cell and Gene Therapy Baylor College of Medicine, Houston TX, USA
| | - Helen Heslop
- Center for Cell and Gene Therapy Baylor College of Medicine, Houston TX, USA
| | - Christian S Hinrichs
- Duncan and Nancy MacMillan Cancer Immunology and Metabolism Center of Excellence, New Brunswick, NJ 08901, USA; Rutgers Cancer Institute of New Jersey, New Brunswick, NJ 08901, USA
| | - Rosandra N Kaplan
- Pediatric Oncology Branch, Center for Cancer Research, NCI, Bethesda, MD 20892, USA
| | - Hans-Peter Kiem
- Fred Hutchison Cancer Center and University of Washington, Seattle, WA, USA
| | | | - Donald B Kohn
- Departments of Microbiology, Immunology and Molecular Genetics, Pediatrics (Hematology/Oncology) and Molecular and Medical Pharmacology, University of California, Los Angeles, Los Angeles, CA, USA
| | - Sham Mailankody
- Myeloma and Cellular Therapy Service, Department of Medicine, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | | | | | | | - Jae Park
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Carlos Ramos
- Center for Cell and Gene Therapy Baylor College of Medicine, Houston TX, USA
| | - Antonio Ribas
- Jonsson Comprehensive Cancer Center at the University of California Los Angeles (UCLA), Los Angeles, CA 90095, USA
| | | | | | - Craig Sauter
- Taussig Cancer Institute, Cleveland Clinic, Cleveland, OH, USA
| | - Nirali N Shah
- Pediatric Oncology Branch, Center for Cancer Research, NCI, Bethesda, MD 20892, USA
| | - Susan F Slovin
- Genitourinary Oncology Service, Sidney Kimmel Center for Prostate and Urologic Cancers, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Adrian Thrasher
- Molecular and Cellular Immunology, UCL Great Ormond Street Institute of Child Health, London, UK
| | - David A Williams
- Boston Children's Hospital, Harvard Medical School, Boston, MA, USA
| | - Tsai-Yu Lin
- Department of Medical and Molecular Genetics, Indiana University School of Medicine, Indianapolis, IN, USA; Brown Center for Immunotherapy, Indiana University School of Medicine, Indianapolis, IN, USA
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Biorepository - A key component of research studies. Contemp Clin Trials 2021; 112:106655. [PMID: 34906746 DOI: 10.1016/j.cct.2021.106655] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2021] [Revised: 12/04/2021] [Accepted: 12/08/2021] [Indexed: 01/01/2023]
Abstract
The last two decades have shown impressive advances in high-throughput assays for gene expression (genomics), proteins (proteomics), and metabolites (metabolomics). As a result, the quest for an equivalent need for human biological samples has increased exponentially. Translational investigations require good quality specimens to guarantee research results' integrity, probity, and reproducibility. A biorepository is a bank of specimens or specimens-derived neosamples (e.g., organoids, nucleic acids) linked to a database containing information related to these specimens. Two requirements must be met to safeguard the authenticity and stability of such a repository. First, the information provided should comprise relevant clinical and therapeutic communication, and second, the chain of custody is assured, guarded, versatile, and accessible. Completing these requirements is crucial for consistency, accuracy, verifiability, and disclosability of scientific and clinical outcomes. This commentary emphasizes that advocacy for standardization of operational workflows is a sine qua non for good science. Safe procedures for clinical trials are crucial to maintaining biorepositories' validity for all researchers.
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