Abstract
The clinical application of adeno-associated virus vectors (AAVs) is limited because of concerns about AAV integration–mediated tumorigenicity. We performed integration-site analysis after AAV1-LPLS447X intramuscular injection in five lipoprotein lipase–deficient subjects, revealing random nuclear integration and hotspots in mitochondria. We conclude that AAV integration is potentially safe and that vector breakage and integration may occur from each position of the vector genome. Future viral integration-site analyses should include the mitochondrial genome.
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Acknowledgements
This study has been supported by funds from the European Commission project with short name AIPGENE (grant FP7-HEALTH-2010-261506).
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C.K., S.G.B. and R.F. took part in setting up the experimental design, performed experiments and data mining, and wrote the manuscript. R.v.L., F.S., H.P. and D.G. provided valuable material and intellectual input. A.N., H.G. and C.v.K. provided valuable discussion and conceptual advice. S.S. and S.W. provided valuable discussion and performed sequencing. M.S. set up the research concept and experimental design, and wrote the manuscript.
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Kaeppel, C., Beattie, S., Fronza, R. et al. A largely random AAV integration profile after LPLD gene therapy. Nat Med 19, 889–891 (2013). https://doi.org/10.1038/nm.3230
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DOI: https://doi.org/10.1038/nm.3230
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