Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical Settings

Adeno-associated viruses (AAVs) are the safest and most effective gene delivery vehicles to drive long-term transgene expression in gene therapy. While animal studies have shown promising results, the translatability of AAVs into clinical settings has been partly limited due to their restricted gene...

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Main Authors: Hau Kiu Edna Au, Mark Isalan, Michal Mielcarek
Format: Article
Language:English
Published: Frontiers Media S.A. 2022-02-01
Series:Frontiers in Medicine
Subjects:
Online Access:https://www.frontiersin.org/articles/10.3389/fmed.2021.809118/full
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author Hau Kiu Edna Au
Mark Isalan
Mark Isalan
Michal Mielcarek
Michal Mielcarek
author_facet Hau Kiu Edna Au
Mark Isalan
Mark Isalan
Michal Mielcarek
Michal Mielcarek
author_sort Hau Kiu Edna Au
collection DOAJ
description Adeno-associated viruses (AAVs) are the safest and most effective gene delivery vehicles to drive long-term transgene expression in gene therapy. While animal studies have shown promising results, the translatability of AAVs into clinical settings has been partly limited due to their restricted gene packaging capacities, off-target transduction, and immunogenicity. In this study, we analysed over two decades of AAV applications, in 136 clinical trials. This meta-analysis aims to provide an up-to-date overview of the use and successes of AAVs in clinical trials, while evaluating the approaches used to address the above challenges. First, this study reveals that the speed of novel AAV development has varied between therapeutic areas, with particular room for improvement in Central Nervous System disorders, where development has been slow. Second, the lack of dose-dependent toxicity and efficacy data indicates that optimal dosing regimes remain elusive. Third, more clinical data on the effectiveness of various immune-modulation strategies and gene editing approaches are required to direct future research and to accelerate the translation of AAV-mediated gene therapy into human applications.
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spelling doaj.art-edfcdafbe7a74e8b9f415b2fef5f82ae2022-12-21T21:49:21ZengFrontiers Media S.A.Frontiers in Medicine2296-858X2022-02-01810.3389/fmed.2021.809118809118Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical SettingsHau Kiu Edna Au0Mark Isalan1Mark Isalan2Michal Mielcarek3Michal Mielcarek4Department of Life Sciences, Imperial College London, London, United KingdomDepartment of Life Sciences, Imperial College London, London, United KingdomImperial College Centre for Synthetic Biology, Imperial College London, London, United KingdomDepartment of Life Sciences, Imperial College London, London, United KingdomImperial College Centre for Synthetic Biology, Imperial College London, London, United KingdomAdeno-associated viruses (AAVs) are the safest and most effective gene delivery vehicles to drive long-term transgene expression in gene therapy. While animal studies have shown promising results, the translatability of AAVs into clinical settings has been partly limited due to their restricted gene packaging capacities, off-target transduction, and immunogenicity. In this study, we analysed over two decades of AAV applications, in 136 clinical trials. This meta-analysis aims to provide an up-to-date overview of the use and successes of AAVs in clinical trials, while evaluating the approaches used to address the above challenges. First, this study reveals that the speed of novel AAV development has varied between therapeutic areas, with particular room for improvement in Central Nervous System disorders, where development has been slow. Second, the lack of dose-dependent toxicity and efficacy data indicates that optimal dosing regimes remain elusive. Third, more clinical data on the effectiveness of various immune-modulation strategies and gene editing approaches are required to direct future research and to accelerate the translation of AAV-mediated gene therapy into human applications.https://www.frontiersin.org/articles/10.3389/fmed.2021.809118/fulladeno-associated virusgene therapytropismclinical trialspromoters
spellingShingle Hau Kiu Edna Au
Mark Isalan
Mark Isalan
Michal Mielcarek
Michal Mielcarek
Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical Settings
Frontiers in Medicine
adeno-associated virus
gene therapy
tropism
clinical trials
promoters
title Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical Settings
title_full Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical Settings
title_fullStr Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical Settings
title_full_unstemmed Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical Settings
title_short Gene Therapy Advances: A Meta-Analysis of AAV Usage in Clinical Settings
title_sort gene therapy advances a meta analysis of aav usage in clinical settings
topic adeno-associated virus
gene therapy
tropism
clinical trials
promoters
url https://www.frontiersin.org/articles/10.3389/fmed.2021.809118/full
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