Evidence map›Paper›PMID 21883883›Full record

ArticleJournal of thrombosis and haemostasis : JTH2011

Muscle-directed gene therapy for hemophilia B with more efficient and less immunogenic AAV vectors.

L Wang, J-P Louboutin, P Bell, J A Greig, Y Li, D Wu, J M Wilson

Open access · bronzeAbstract read
In one paragraph

Article in Journal of thrombosis and haemostasis : JTH, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.4field-weighted citation impact, top 12% of its field
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

15 citing papers in PubMed, 26 citations in OpenAlex.

  1. Article
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  5. Systemic AAV8-Mediated Gene Therapy Drives Whole-Body Correction of Myotubular Myopathy in Dogs.Molecular therapy : the journal of the American Society of Gene Therapy · 2017
    Article
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  8. Review
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  15. The AAV vector toolkit: poised at the clinical crossroads.Molecular therapy : the journal of the American Society of Gene Therapy · 2012
    Review
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

7 authors at 1 institution in 1 country.

L WangDepartment of Pathology and Laboratory Medicine, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
J-P Louboutin
P Bell
J A Greig
Y Li
D Wu
J M Wilson
University of Pennsylvania · US

Funding

VECTOR COREP01HL059407 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI LIMBERIS, MARIA P. · 1999 to 2019
$35.6M
Vector CoreP30DK047757 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI WILSON, JAMES M · 1993 to 2017
$18.0M
NHLBI NIH HHS 2-P01-HL-059407-06A1NHLBI NIH HHS P01 HL059407NIDDK NIH HHS 5-P30-DK-47757-12NIDDK NIH HHS P30 DK047757
6 · The paper itself

Abstract

backgroundAdeno-associated viral vector (AAV)-mediated and muscle-directed gene therapy is a safe and non-invasive approach to treatment of hemophilia B and other genetic diseases. However, low efficiency of transduction, inhibitor formation and high prevalence of pre-existing immunity to the AAV capsid in humans remain as main challenges for AAV2-based vectors using this strategy. Vectors packaged with AAV7, 8 and 9 serotypes have improved gene transfer efficiencies and may provide potential alternatives to overcome these problems.

objectiveTo compare the long-term expression of canine factor IX (cFIX) levels and anti-cFIX antibody responses following intramuscular injection of vectors packaged with AAV1, 2, 5, 7, 8 and 9 capsid in immunocompetent hemophilia B mice.

resultsHighest expression was detected in mice injected with AAV2/8 vector (28% of normal), followed by AAV2/9 (15%) and AAV2/7 (10%). cFIX expression by AAV2/1 only ranged from 0 to 5% of normal levels. High incidences of anti-cFIX inhibitor (IgG) were detected in mice injected with AAV2 and 2/5 vectors, followed by AAV2/1. None of the mice treated with AAV2/7, 2/8 and 2/9 developed inhibitors or capsid T cells.

conclusionsAAV7, 8 and 9 are more efficient and safer vectors for muscle-directed gene therapy with high levels of transgene expression and absence of inhibitor formation. The absence of antibody response to transgene by AAV7, 8 and 9 is independent of vector dose but may be due to the fact that these three serotypes are associated with high level distribution to, and transduction of, hepatocytes following i.m. injection.

Indexed as

Genetic TherapyGenetic VectorsAnimalsDependovirusEnzyme-Linked Immunosorbent AssayFemaleHemophilia BHumansMaleMiceMice, Inbred BALB CMice, Inbred C57BLMuscles

Identifiers

PMID21883883
PMCPMC3393098
OpenAlexW1807214165

What OpenQuestion holds

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LicenceTDM
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.