Evidence map›Paper›PMID 39168991›Full record

ArticleNature communications2024

Pre-clinical evaluation of an enhanced-function factor VIII variant for durable hemophilia A gene therapy in male mice.

Anna R Sternberg, Cristina Martos-Rus, Robert J Davidson, Xueyuan Liu, Lindsey A George

Abstract read
In one paragraph

Article in Nature communications, 2024. 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
–field-weighted citation impact
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.

  1. Article
  2. Article
  3. Article
  4. Review
  5. Review
  6. Deconstructing gene therapy in hemophilia for the clinician.Hematology. American Society of Hematology. Education Program · 2025
    Review
  7. Article
  8. Use of CD19-targeted immune modulation to eradicate AAV-neutralizing antibodies.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Article
  9. Current clinical applications of AAV-mediated gene therapy.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  10. Gene therapy for hemophilia - From basic science to first approvals of "one-and-done" therapies.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  11. The deLIVERed promises of gene therapy: Past, present, and future of liver-directed gene therapy.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  12. Gene regulation technologies for gene and cell therapy.Molecular therapy : the journal of the American Society of Gene Therapy · 2025
    Review
  13. Research and practice in thrombosis and haemostasis · 2025
    Article
  14. Review
  15. Review
4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

5 authors.

Anna R SternbergRaymond G. Perelman Center for Cellular and Molecular Therapeutics, the Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Cristina Martos-RusRaymond G. Perelman Center for Cellular and Molecular Therapeutics, the Children's Hospital of Philadelphia, Philadelphia, PA, USA.ORCID 0000-0003-2284-352X
Robert J DavidsonRaymond G. Perelman Center for Cellular and Molecular Therapeutics, the Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Xueyuan LiuRaymond G. Perelman Center for Cellular and Molecular Therapeutics, the Children's Hospital of Philadelphia, Philadelphia, PA, USA.
Lindsey A GeorgeRaymond G. Perelman Center for Cellular and Molecular Therapeutics, the Children's Hospital of Philadelphia, Philadelphia, PA, USA. georgel@chop.edu.ORCID 0000-0002-9763-1559

Funding

HEMATOLOGY CLINICAL RESEARCH TRAINING PROGRAMT32HL007439 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI LAWRENCE F BRASS, PETER S KLEIN · 1985 to 2026
$17.1M
TRAINING GRANT IN HEMOSTASIS AND THROMBOSIST32HL007971 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI Rodney M Camire · 2001 to 2026
$10.6M
Therapeutic Applications of Factor VIIIa Inactivation in Hemophilia AK08HL146991 · NHLBI · CHILDREN'S HOSP OF PHILADELPHIA · PI GEORGE, LINDSEY ALLISON · 2019 to 2023
$698k
NHLBI NIH HHS K08 HL146991NHLBI NIH HHS T32 HL007439NHLBI NIH HHS T32 HL007971U.S. Department of Health & Human Services | NIH | National Heart, Lung, and Blood Institute (NHLBI) K08-HL-146991U.S. Department of Health & Human Services | NIH | National Heart, Lung, and Blood Institute (NHLBI) T32-HL-007439U.S. Department of Health & Human Services | NIH | National Heart, Lung, and Blood Institute (NHLBI) T32-HL-007971
6 · The paper itself

Abstract

Durable factor VIII expression that normalizes hemostasis is an unrealized goal of hemophilia A adeno-associated virus-mediated gene therapy. Trials with initially normal factor VIII activity observed unexplained year-over-year declines in expression while others reported low-level, stable expression inadequate to restore normal hemostasis. Here we demonstrate that male mice recapitulate expression-level-dependent loss of factor VIII levels due to declines in vector copy number. We show that an enhanced function factor VIII variant (factor VIII-R336Q/R562Q), resistant to activated protein C-mediated inactivation, normalizes hemostasis at below-normal expression without evidence of prothrombotic risk in male hemophilia A mice. These data support that factor VIII-R336Q/R562Q may restore normal factor VIII function at low levels of expression to permit durability using low vector doses to minimize dose-dependent adeno-associated virus toxicities. This work informs the mechanism of factor VIII durability after gene transfer and supports that factor VIII-R336Q/R562Q may safely overcome current hemophilia A gene therapy limitations.

Indexed as

DependovirusFactor VIIIGenetic TherapyGenetic VectorsHemophilia AAnimalsDisease Models, AnimalHemostasisHumansMaleMiceMice, Inbred C57BLFactor VIII

Identifiers

PMID39168991
PMCPMC11339367

What OpenQuestion holds

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LicenceCC BY-NC-ND
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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.