Evidence map›Paper›PMID 21386821›Full record

ArticleMolecular therapy : the journal of the American Society of Gene Therapy2011

Distribution of lentiviral vector integration sites in mice following therapeutic gene transfer to treat β-thalassemia.

Keshet Ronen, Olivier Negre, Shannah Roth, Charlotte Colomb, Nirav Malani, Maria Denaro, Troy Brady, Floriane Fusil, Beatrix Gillet-Legrand, Kathleen Hehir and 5 more

Open access · hybridAbstract read
In one paragraph

Article in Molecular therapy : the journal of the American Society of Gene Therapy, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 35 papers.

0numbers the graph read from it
0cells of the map it votes in
35citing papers in PubMed
5.0field-weighted citation impact, top 4% of its field
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

35 citing papers in PubMed, 71 citations in OpenAlex.

  1. Lentiviral Gene Therapy for Artemis-Deficient SCID.The New England journal of medicine · 2022
    Trial
  2. Trial
  3. Review
  4. Article
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  6. Article
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  11. 3' UTR-truncated HMGA2 overexpression induces non-malignantMolecular therapy. Methods & clinical development · 2021
    Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Gene Therapy For Beta-Thalassemia: Updated Perspectives.The application of clinical genetics · 2019
    Article
  19. Gene correction of HBB mutations in CD34Molecular and cellular pediatrics · 2018
    Article
  20. Prolonged Integration Site Selection of a Lentiviral Vector in the Genome of Human Keratinocytes.Medical science monitor : international medical journal of experimental and clinical research · 2017
    Article
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

15 authors at 5 institutions in 2 countries.

Keshet RonenDepartment of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, Pennsylvania 19104-6076, USA.
Olivier Negre
Shannah Roth
Charlotte Colomb
Nirav Malani
Maria Denaro
Troy Brady
Floriane Fusil
Beatrix Gillet-Legrand
Kathleen Hehir
Yves Beuzard
Philippe Leboulch
Julian D Down
Emmanuel Payen
Frederic D Bushman
Inserm · FRUniversity of Pennsylvania · USBluebird Bio (United States) · USBluebird Bio (France) · FRBrigham and Women's Hospital · US

Funding

TRAINING IN VIROLOGYT32AI007324 · NIAID · WISTAR INSTITUTE · PI Paul Bates, Matthew D. Weitzman · 1989 to 2026
$6.8M
Favored Sites for HIV Integration in the Human GenomeR01AI052845 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI BUSHMAN, FREDERIC D · 2002 to 2017
$5.6M
Massively Parallel Analysis of Integration in Therapeutic Gene TransferR01AI082020 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI BUSHMAN, FREDERIC D · 2009 to 2018
$3.5M
Cell selection strategies for the gene therapy of the beta-hemoglobinopathiesR01HL090921 · NHLBI · BRIGHAM AND WOMEN'S HOSPITAL · PI LEBOULCH, PHILIPPE · 2008 to 2011
$1.7M
NHLBI NIH HHS HL090921NHLBI NIH HHS R01 HL090921NIAID NIH HHS AI052845NIAID NIH HHS AI082020NIAID NIH HHS R01 AI052845NIAID NIH HHS R01 AI082020NIAID NIH HHS T32 AI007324NIAID NIH HHS T32 AI-07324-17
6 · The paper itself

Abstract

A lentiviral vector encoding β-globin flanked by insulator elements has been used to treat β-thalassemia (β-Thal) successfully in one human subject. However, a clonal expansion was observed after integration in the HMGA2 locus, raising the question of how commonly lentiviral integration would be associated with possible insertional activation. Here, we report correcting β-Thal in a murine model using the same vector and a busulfan-conditioning regimen, allowing us to investigate efficacy and clonal evolution at 9.2 months after transplantation of bone marrow cells. The five gene-corrected recipient mice showed near normal levels of hemoglobin, reduced accumulation of reticulocytes, and normalization of spleen weights. Mapping of integration sites pretransplantation showed the expected favored integration in transcription units. The numbers of gene-corrected long-term repopulating cells deduced from the numbers of unique integrants indicated oligoclonal reconstitution. Clonal abundance was quantified using a Mu transposon-mediated method, indicating that clones with integration sites near growth-control genes were not enriched during growth. No integration sites involving HMGA2 were detected. Cells containing integration sites in genes became less common after prolonged growth, suggesting negative selection. Thus, β-Thal gene correction in mice can be achieved without expansion of cells harboring vectors integrated near genes involved in growth control.

Indexed as

Animalsbeta-Globinsbeta-ThalassemiaBone Marrow TransplantationChromatography, High Pressure LiquidFlow CytometryGenetic VectorsHMGA2 ProteinLentivirusMicebeta-GlobinsHMGA2 Protein

Identifiers

PMID21386821
PMCPMC3129560
OpenAlexW2167473983

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.