Evidence map›Paper›PMID 22523064›Full record

ArticleThe Journal of clinical investigation2012

Whole transcriptome characterization of aberrant splicing events induced by lentiviral vector integrations.

Daniela Cesana, Jacopo Sgualdino, Laura Rudilosso, Stefania Merella, Luigi Naldini, Eugenio Montini

Abstract read
In one paragraph

Article in The Journal of clinical investigation, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 73 papers.

0numbers the graph read from it
0cells of the map it votes in
73citing papers in PubMed
–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

73 citing papers in PubMed.

  1. Trial
  2. Review
  3. Review
  4. Article
  5. Gene therapy · 2025
    Article
  6. Article
  7. Preclinical development of lentiviral vector gene therapy for Diamond-Blackfan anemia syndrome.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  8. Balancing efficacy and safety in lentiviral vector-mediated hematopoietic stem cell gene therapy.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  9. Article
  10. Review
  11. Article
  12. Review
  13. Article
  14. Review
  15. Evaluating the state of the science for adeno-associated virus integration: An integrated perspective.Molecular therapy : the journal of the American Society of Gene Therapy · 2022
    Review
  16. Article
  17. Article
  18. Article
  19. Article
  20. Review

13 more citing papers are in PubMed but not listed here.

4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

6 authors.

Daniela CesanaSan Raffaele Telethon Institute for Gene Therapy and Division of Regenerative Medicine, Stem Cells and Gene Therapy, Milan, Italy.
Jacopo Sgualdino
Laura Rudilosso
Stefania Merella
Luigi Naldini
Eugenio Montini

Funding

Telethon TGT11D01Telethon TGTGSKP2Worldwide Cancer Research 09-0784
6 · The paper itself

Abstract

Gamma-retroviral/lentiviral vectors (γRV/LV) with self-inactivating (SIN) long terminal repeats (LTRs) and internal moderate cellular promoters pose a reduced risk of insertional mutagenesis when compared with vectors with active LTRs. Yet, in a recent LV-based clinical trial for β-thalassemia, vector integration within the HMGA2 gene induced the formation of an aberrantly spliced mRNA form that appeared to cause clonal dominance. Using a method that we developed, cDNA linear amplification-mediated PCR, in combination with high-throughput sequencing, we conducted a whole transcriptome analysis of chimeric LV-cellular fusion transcripts in transduced human lymphoblastoid cells and primary hematopoietic stem/progenitor cells. We observed a surprising abundance of read-through transcription originating outside and inside the provirus and identified the vector sequences contributing to the aberrant splicing process. We found that SIN LV has a sharply reduced propensity to engage in aberrant splicing compared with that of vectors carrying active LTRs. Moreover, by recoding the identified vector splice sites, we reduced residual read-through transcription and demonstrated an effective strategy for improving vectors. Characterization of the mechanisms and genetic features underlying vector-induced aberrant splicing will enable the generation of safer vectors, with low impact on the cellular transcriptome.

Indexed as

Alternative SplicingTranscriptomeVirus IntegrationBase SequenceCells, CulturedGene Expression ProfilingGenes, EssentialHematopoietic Stem CellsHumansLentivirusLentivirus InfectionsMutagenesis, InsertionalMutant Chimeric ProteinsPolymerase Chain ReactionPrimary Cell CultureProtein IsoformsMutant Chimeric ProteinsProtein IsoformsRNA, Messenger

Identifiers

PMID22523064
PMCPMC3336994

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.