Efficient correction of ABCA4 variants by CRISPR-Cas9 in hiPSCs derived from Stargardt disease patients
Open accessAbstract
Inherited retinal dystrophies comprise a broad group of genetic eye diseases without effective treatment. Among them, Stargardt disease is the second most prevalent pathology. This pathology triggers progressive retinal degeneration and vision loss in children and adults. In recent years, the evolution of several genome editing technologies, such as the CRISPR-Cas9 system, has revolutionized disease modeling and personalized medicine. Human induced pluripotent stem cells also provide a valuable tool for in vitro disease studies and therapeutic applications. Here, we show precise correction of two ABCA4 pathogenic variants in human induced pluripotent stem cells from two unrelated patients affected with Stargardt disease. Gene editing was achieved with no detectable off-target genomic alterations, demonstrating efficient ABCA4 gene correction without deleterious effects. These results will contribute to the development of emerging gene and cell therapies for inherited retinal dystrophies.
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All predicted off-target sites located within exonic regions or intronic regions in close proximity to exons were analyzed by Sanger sequencing.
“All predicted off-target sites located within exonic regions or intronic regions in close proximity to exons were analyzed by Sanger sequencing, following the same criteria as previously reported studies [36,40,41].”
From Precise CRISPR/Cas9 and Cas12 Correction Using Lipoplexes in Retinal Models Derived from Patients with Inherited Retinal Dystrophies (2026) · cites this paper as [40]
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Siles, L., & Pomares, E. (2025) · Molecular Therapy Nucleic Acids · doi:10.1016/j.omtn.2025.102482 · Cited by 4 · see citing works
Self-citationSiles, L., Ruiz-Nogales, S., Méndez-Vendrell, P., & Pomares, E. (2026) · Cells · doi:10.3390/cells15050457
“All predicted off-target sites located within exonic regions or intronic regions in close proximity to exons were analyzed by Sanger sequencing, following the same criteria as previously reported studies [36,40,41].”
Self-citation
- Authors
- Siles, L., Ruiz-Nogales, S., Navinés-Ferrer, A., Méndez-Vendrell, P., & Pomares, E.
- Affiliations
- Instituto de Microcirugía Ocular (ES)
- Corresponding author
- Pomares, Esther
- ORCID
- Pomares, Esther
- Venue
- Molecular Therapy - Nucleic Acids
- Publisher
- Elsevier BV
- Published
- 2023-06
- Volume
- 32
- Pages
- 64-79
- ISSN
- 2162-2531 (ISSN-L)
- PMC
- PMC10034418
- OpenAlex
- W4323044282
- Cited by
- 29
- References
- 4
- Citations by year
- 2026: 9 · 2025: 9 · 2024: 7 · 2023: 4
- FWCI
- 2.58
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- Locations
- Molecular Therapy — Nucleic Acids (publishedVersion, cc-by-nc-nd)
- PubMed Central (publishedVersion, cc-by-nc-nd)
- PubMed (publishedVersion)
- DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Retinal Development and Disorders
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › CRISPR and Genetic Engineering
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Virus-based gene therapy research
- Keywords
- Stargardt disease, ABCA4, CRISPR/Cas9 genome editing, induced pluripotent stem cells, inherited retinal disease, retinal degeneration, off-target effects, gene therapy, cell therapy, disease modeling
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