Evidence map›Paper›PMID 31882320›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2020

TEG001 Insert Integrity from Vector Producer Cells until Medicinal Product.

Trudy Straetemans, Anke Janssen, Koen Jansen, Ruud Doorn, Tineke Aarts, Anna D D van Muyden, Marieke Simonis, Judith Bergboer, Moniek de Witte, Zsolt Sebestyen and 1 more

Abstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Guideline
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  9. γ9δ2T cell diversity and the receptor interface with tumor cells.The Journal of clinical investigation · 2020
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors.

Trudy StraetemansDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands. Electronic address: g.c.m.straetemans@umcutrecht.nl.
Anke JanssenDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Koen JansenDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Ruud DoornDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Tineke AartsDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Anna D D van MuydenDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Marieke SimonisCergentis, Utrecht, the Netherlands.
Judith BergboerCergentis, Utrecht, the Netherlands.
Moniek de WitteDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Zsolt SebestyenDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands.
Jurgen KuballDepartment of Hematology, Center of Translational Immunology, University Medical Center Utrecht, Utrecht University, Utrecht, the Netherlands. Electronic address: j.h.e.kuball@umcutrecht.nl.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Despite extensive usage of gene therapy medicinal products (GTMPs) in clinical studies and recent approval of chimeric antigen receptor (CAR) T cell therapy, little information has been made available on the precise molecular characterization and possible variations in terms of insert integrity and vector copy numbers of different GTMPs during the complete production chain. Within this context, we characterize αβT cells engineered to express a defined γδT cell engineered to express a defined γδT receptor (TEG) currently used in a first-in-human clinical study (NTR6541). Utilizing targeted locus amplification in combination with next generation sequencing for the vector producer clone and TEG001 products, we report on five single-nucleotide variants and nine intact vector copies integrated in the producer clone. The vector copy number in TEG001 cells was on average a factor 0.72 (SD 0.11) below that of the producer cell clone. All nucleotide variants were transferred to TEG001 without having an effect on cellular proliferation during extensive in vitro culture. Based on an environmental risk assessment of the five nucleotide variants present in the non-coding viral region of the TEG001 insert, there was no altered environmental impact of TEG001 cells. We conclude that TEG001 cells do not have an increased risk for malignant transformation in vivo.

Indexed as

Genetic EngineeringGenetic TherapyImmunotherapy, AdoptiveGenetic VectorsHumansMutagenesis, InsertionalMutationPhenotypeReceptors, Antigen, T-CellT-LymphocytesTransgenesUntranslated RegionsVirus IntegrationReceptors, Antigen, T-CellUntranslated Regionsengineered T cellsgene therapy medicinal productGTMPtargeted locus amplificationTEG001TLAvector copy numberγδT cells

Identifiers

PMID31882320
PMCPMC7001055

What OpenQuestion holds

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.