Evidence map›Paper›PMID 39496933›Full record

ArticleNature biomedical engineering2025

Large DNA deletions occur during DNA repair at 20-fold lower frequency for base editors and prime editors than for Cas9 nucleases.

Gue-Ho Hwang, Seok-Hoon Lee, Minsik Oh, Segi Kim, Omer Habib, Hyeon-Ki Jang, Heon Seok Kim, Youngkuk Kim, Chan Hyuk Kim, Sun Kim and 1 more

Abstract read
In one paragraph

Article in Nature biomedical engineering, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 38 papers.

0numbers the graph read from it
0cells of the map it votes in
38citing 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

38 citing papers in PubMed.

  1. Article
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  3. Article
  4. Article
  5. Review
  6. Article
  7. Article
  8. Article
  9. Article
  10. In vivo systematic detection of the outcomes of CRISPR-Cas9-mediated DNA repair in skeletal muscle stem cells.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
    Article
  11. Article
  12. Review
  13. Cytosine base editing of LPA in transgenic mice averts large deletions.Molecular therapy : the journal of the American Society of Gene Therapy · 2026
    Article
  14. Review
  15. Efficient and Safe Knockout ofVeterinary sciences · 2026
    Article
  16. Review
  17. Review
  18. Article
  19. Article
  20. 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

11 authors.

Gue-Ho Hwang *Medical Research Center of Genomic Medicine Institute, Seoul National University College of Medicine, Seoul, Republic of Korea.ORCID 0000-0002-4201-0974
Seok-Hoon Lee *Department of Biomedical Sciences, Seoul National University College of Medicine, Seoul, Republic of Korea.
Minsik OhSchool of Software Convergence, Myongji University, Seoul, Republic of Korea.
Segi KimDepartment of Biological Sciences, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Republic of Korea.
Omer HabibRedGene Inc, Seoul, Republic of Korea.
Hyeon-Ki JangDivision of Chemical Engineering and Bioengineering, College of Art Culture and Engineering, Kangwon National University, Chuncheon-si, Gangwon-do, Republic of Korea.ORCID 0000-0003-0246-3116
Heon Seok KimDepartment of Life Science, College of Natural Sciences, Hanyang University, Seoul, Republic of Korea.
Youngkuk KimDepartment of Computer Science and Engineering, Seoul National University, Seoul, Republic of Korea.
Chan Hyuk KimSchool of Transdisciplinary Innovations, Seoul National University, Seoul, Republic of Korea.ORCID 0000-0001-9649-1892
Sun KimDepartment of Computer Science and Engineering, Seoul National University, Seoul, Republic of Korea.
Sangsu BaeMedical Research Center of Genomic Medicine Institute, Seoul National University College of Medicine, Seoul, Republic of Korea. sbae7@snu.ac.kr.ORCID 0000-0003-3615-8566

Funding

National Research Foundation of Korea (NRF) 2021M3A9H3015389
6 · The paper itself

Abstract

When used to edit genomes, Cas9 nucleases produce targeted double-strand breaks in DNA. Subsequent DNA-repair pathways can induce large genomic deletions (larger than 100 bp), which constrains the applicability of genome editing. Here we show that Cas9-mediated double-strand breaks induce large deletions at varying frequencies in cancer cell lines, human embryonic stem cells and human primary T cells, and that most deletions are produced by two repair pathways: end resection and DNA-polymerase theta-mediated end joining. These findings required the optimization of long-range amplicon sequencing, the development of a k-mer alignment algorithm for the simultaneous analysis of large DNA deletions and small DNA alterations, and the use of CRISPR-interference screening. Despite leveraging mutated Cas9 nickases that produce single-strand breaks, base editors and prime editors also generated large deletions, yet at approximately 20-fold lower frequency than Cas9. We provide strategies for the mitigation of such deletions.

Indexed as

CRISPR-Associated Protein 9CRISPR-Cas SystemsDNADNA RepairEndonucleasesGene EditingSequence DeletionCell Line, TumorDNA Breaks, Double-StrandedDNA Polymerase thetaHumansCRISPR-Associated Protein 9DNADNA Polymerase thetaEndonucleases

Identifiers

PMID39496933
PMCPMC11754094

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.