Evidence map›Paper›PMID 20486768›Full record

ArticleHuman gene therapy2010

Characterization of a recombinant adeno-associated virus type 2 Reference Standard Material.

Martin Lock, Susan McGorray, Alberto Auricchio, Eduard Ayuso, E Jeffrey Beecham, Véronique Blouin-Tavel, Fatima Bosch, Mahuya Bose, Barry J Byrne, Tina Caton and 38 more

Open access · greenAbstract read
In one paragraph

Article in Human gene therapy, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 76 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
76citing papers in PubMed, 1 pooled it
4.7field-weighted citation impact, top 5% 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

76 citing papers in PubMed, 1 synthesis or guideline pooled it, 129 citations in OpenAlex.

  1. What's new and what's next for gene therapy in Pompe disease?Expert opinion on biological therapy · 2022
    Pooled it
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16 more citing papers are in PubMed but not listed here.

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

48 authors at 11 institutions in 4 countries.

Martin LockGene Therapy Program, Department of Pathology and Laboratory Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
Susan McGorray
Alberto Auricchio
Eduard Ayuso
E Jeffrey Beecham
Véronique Blouin-Tavel
Fatima Bosch
Mahuya Bose
Barry J Byrne
Tina Caton
John A Chiorini
Abdelwahed Chtarto
K Reed Clark
Thomas Conlon
Christophe Darmon
Monica Doria
Anne Douar
Terence R Flotte
Joyce D Francis
Achille Francois
Mauro Giacca
Michael T Korn
Irina Korytov
Xavier Leon
Barbara Leuchs
Gabriele Lux
Catherine Melas
Hiroaki Mizukami
Philippe Moullier
Marcus Müller
Keiya Ozawa
Tina Philipsberg
Karine Poulard
Christina Raupp
Christel Rivière
Sigrid D Roosendaal
R Jude Samulski
Steven M Soltys
Richard Surosky
Liliane Tenenbaum
Darby L Thomas
Bart van Montfort
Gabor Veres
J Fraser Wright
Yili Xu
Olga Zelenaia
Lorena Zentilin
Richard O Snyder
Genethon (France) · FRUniversity of Pennsylvania · USHeidelberg University · DESangamo BioSciences (United States) · USTelethon Institute Of Genetics And Medicine · ITChildren's Hospital of Philadelphia · USGerman Cancer Research Center · DENational Institute of Dental and Craniofacial Research · USThe Ohio State University · USUniversity of Florida · USUniversity of Massachusetts Chan Medical School · US

Funding

Adeno-associated Virus Biology And Utilization For Gene TransferZIADE000695 · NIDCR · NATIONAL INSTITUTE OF DENTAL & CRANIOFACIAL RESEARCH · PI CHIORINI, JAY · 2009 to 2025
$36.6M
VIRAL VECTOR DELIVERY OF ANTISENSE TO ACE MRNA IN CARDIOVASCULAR DISEASEP01HL059412 · NHLBI · UNIVERSITY OF FLORIDA · PI MUZYCZKA, NICHOLAS · 1998 to 2012
$20.2M
Vector CoreP30DK047757 · NIDDK · UNIVERSITY OF PENNSYLVANIA · PI WILSON, JAMES M · 1993 to 2017
$18.0M
NGVL: SAFETY TESTS SERVICES TO NGVL CENTERS GENERATING CLINICAL GRADE MATERIALU42RR011148 · NCRR · INDIANA UNIV-PURDUE UNIV AT INDIANAPOLIS · PI CORNETTA, KENNETH · 1995 to 2007
$13.1M
NCRR NIH HHS U42RR11148NHLBI NIH HHS P01 HL059412NIDDK NIH HHS P30-DK-047757Telethon GGP07176Telethon TGM06S02
6 · The paper itself

Abstract

A recombinant adeno-associated virus serotype 2 Reference Standard Material (rAAV2 RSM) has been produced and characterized with the purpose of providing a reference standard for particle titer, vector genome titer, and infectious titer for AAV2 gene transfer vectors. Production and purification of the reference material were carried out by helper virus-free transient transfection and chromatographic purification. The purified bulk material was vialed, confirmed negative for microbial contamination, and then distributed for characterization along with standard assay protocols and assay reagents to 16 laboratories worldwide. Using statistical transformation and modeling of the raw data, mean titers and confidence intervals were determined for capsid particles ({X}, 9.18 x 10¹¹ particles/ml; 95% confidence interval [CI], 7.89 x 10¹¹ to 1.05 x 10¹² particles/ml), vector genomes ({X}, 3.28 x 10¹⁰ vector genomes/ml; 95% CI, 2.70 x 10¹⁰ to 4.75 x 10¹⁰ vector genomes/ml), transducing units ({X}, 5.09 x 10⁸ transducing units/ml; 95% CI, 2.00 x 10⁸ to 9.60 x 10⁸ transducing units/ml), and infectious units ({X}, 4.37 x 10⁹ TCID₅₀ IU/ml; 95% CI, 2.06 x 10⁹ to 9.26 x 10⁹ TCID₅₀ IU/ml). Further analysis confirmed the identity of the reference material as AAV2 and the purity relative to nonvector proteins as greater than 94%. One obvious trend in the quantitative data was the degree of variation between institutions for each assay despite the relatively tight correlation of assay results within an institution. This relatively poor degree of interlaboratory precision and accuracy was apparent even though attempts were made to standardize the assays by providing detailed protocols and common reagents. This is the first time that such variation between laboratories has been thoroughly documented and the findings emphasize the need in the field for universal reference standards. The rAAV2 RSM has been deposited with the American Type Culture Collection and is available to the scientific community to calibrate laboratory-specific internal titer standards. Anticipated uses of the rAAV2 RSM are discussed.

Indexed as

DependovirusGenetic VectorsBiological AssayDNA, ViralElectrophoresis, Polyacrylamide GelEnzyme-Linked Immunosorbent AssayGenome, ViralHelper VirusesPolymerase Chain ReactionReference StandardsTransduction, GeneticVirus ReplicationDNA, Viral

Identifiers

PMID20486768
PMCPMC2957240
OpenAlexW2035671670

What OpenQuestion holds

Textmetadata
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.