Evidence map›Paper›PMID 32040546›Full record

Trial reportBlood2020

Clonal tracking in gene therapy patients reveals a diversity of human hematopoietic differentiation programs.

Emmanuelle Six, Agathe Guilloux, Adeline Denis, Arnaud Lecoules, Alessandra Magnani, Romain Vilette, Frances Male, Nicolas Cagnard, Marianne Delville, Elisa Magrin and 14 more

Open access · greenAbstract readClinical Trial
In one paragraph

Trial report in Blood, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers.

0numbers the graph read from it
0cells of the map it votes in
49citing papers in PubMed
6.3field-weighted citation impact, top 3% 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

49 citing papers in PubMed, 69 citations in OpenAlex.

  1. Trial
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  6. Mapping Hematopoietic Fate after Transplantation.Stem cell reviews and reports · 2025
    Review
  7. Article
  8. Article
  9. Direct megakaryopoiesis.Current opinion in hematology · 2025
    Review
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  15. Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

24 authors at 5 institutions in 3 countries.

Emmanuelle SixINSERM UMR 1163, Laboratory of Human Lymphohematopoiesis, Paris, France.
Agathe GuillouxLaboratoire de Mathématiques et Modélisation d'Evry, CNRS, Paris-Saclay University, Evry University, Evry, France.
Adeline DenisINSERM UMR 1163, Laboratory of Human Lymphohematopoiesis, Paris, France.
Arnaud LecoulesINSERM UMR 1163, Laboratory of Human Lymphohematopoiesis, Paris, France.
Alessandra MagnaniBiotherapy Clinical Investigation Center, Groupe Hospitalier Universitaire Ouest, Assistance Publique-Hôpitaux de Paris, INSERM, Paris, France.
Romain ViletteLaboratoire de Mathématiques et Modélisation d'Evry, CNRS, Paris-Saclay University, Evry University, Evry, France.
Frances MaleDepartment of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, PA.
Nicolas CagnardImagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.
Marianne DelvilleINSERM UMR 1163, Laboratory of Human Lymphohematopoiesis, Paris, France.
Elisa MagrinBiotherapy Clinical Investigation Center, Groupe Hospitalier Universitaire Ouest, Assistance Publique-Hôpitaux de Paris, INSERM, Paris, France.
Laure CaccavelliBiotherapy Clinical Investigation Center, Groupe Hospitalier Universitaire Ouest, Assistance Publique-Hôpitaux de Paris, INSERM, Paris, France.
Cécile RoudautBiotherapy Clinical Investigation Center, Groupe Hospitalier Universitaire Ouest, Assistance Publique-Hôpitaux de Paris, INSERM, Paris, France.
Clemence PlantierBiotherapy Clinical Investigation Center, Groupe Hospitalier Universitaire Ouest, Assistance Publique-Hôpitaux de Paris, INSERM, Paris, France.
Steicy SobrinoINSERM UMR 1163, Laboratory of Human Lymphohematopoiesis, Paris, France.
John GreggDepartment of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, PA.
Christopher L NoblesDepartment of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, PA.
John K EverettDepartment of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, PA.
Salima Hacein-Bey-AbinaClinical Immunology Laboratory, Groupe Hospitalier Universitaire Paris-Sud, Kremlin-Bicêtre Hospital, Assistance Publique-Hôpitaux de Paris, Le Kremlin Bicetre, France.
Anne GalyGenethon, Evry, France.
Alain FischerImagine Institute, Paris Descartes-Sorbonne Paris Cité University, Paris, France.
Adrian J ThrasherGreat Ormond Street, Institute of Child Health, Molecular and Cellular Immunology, University College London, United Kingdom.
Isabelle AndréINSERM UMR 1163, Laboratory of Human Lymphohematopoiesis, Paris, France.
Marina CavazzanaINSERM UMR 1163, Laboratory of Human Lymphohematopoiesis, Paris, France.
Frederic D BushmanDepartment of Microbiology, University of Pennsylvania School of Medicine, Philadelphia, PA.
Délégation Paris 5 · FRInserm · FRUniversity of Pennsylvania · USCentre National de la Recherche Scientifique · FRGreat Ormond Street Hospital · GB

Funding

Virus & Reservoirs CoreP30AI045008 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI ROBERT GROSS · 1999 to 2026
$78.6M
Sequencing and Viral Evolution CoreU19AI117950 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI WHERRY, E. JOHN · 2015 to 2019
$12.0M
Favored Sites for HIV Integration in the Human GenomeR01AI052845 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI BUSHMAN, FREDERIC D · 2002 to 2017
$5.6M
Massively Parallel Analysis of Integration in Therapeutic Gene TransferR01AI082020 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI BUSHMAN, FREDERIC D · 2009 to 2018
$3.5M
NIAID NIH HHS P30 AI045008NIAID NIH HHS R01 AI052845NIAID NIH HHS R01 AI082020NIAID NIH HHS U19 AI117950Wellcome TrustWellcome Trust 090233/Z/09/Z
6 · The paper itself

Abstract

In gene therapy with human hematopoietic stem and progenitor cells (HSPCs), each gene-corrected cell and its progeny are marked in a unique way by the integrating vector. This feature enables lineages to be tracked by sampling blood cells and using DNA sequencing to identify the vector integration sites. Here, we studied 5 cell lineages (granulocytes, monocytes, T cells, B cells, and natural killer cells) in patients having undergone HSPC gene therapy for Wiskott-Aldrich syndrome or β hemoglobinopathies. We found that the estimated minimum number of active, repopulating HSPCs (which ranged from 2000 to 50 000) was correlated with the number of HSPCs per kilogram infused. We sought to quantify the lineage output and dynamics of gene-modified clones; this is usually challenging because of sparse sampling of the various cell types during the analytical procedure, contamination during cell isolation, and different levels of vector marking in the various lineages. We therefore measured the residual contamination and corrected our statistical models accordingly to provide a rigorous analysis of the HSPC lineage output. A cluster analysis of the HSPC lineage output highlighted the existence of several stable, distinct differentiation programs, including myeloid-dominant, lymphoid-dominant, and balanced cell subsets. Our study evidenced the heterogeneous nature of the cell lineage output from HSPCs and provided methods for analyzing these complex data.

Indexed as

Genetic TherapyHematopoietic Stem Cell TransplantationCell DifferentiationCell TrackingClone CellsGenetic VectorsGene Transfer TechniquesHematopoietic Stem CellsHemoglobinopathiesHumansWiskott-Aldrich Syndrome

Identifiers

PMID32040546
PMCPMC7146019
OpenAlexW3006279252

What OpenQuestion holds

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Registered trials

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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.