Evidence map›Paper›PMID 28887325›Full record

ArticleBlood2017

At least 20% donor myeloid chimerism is necessary to reverse the sickle phenotype after allogeneic HSCT.

Courtney D Fitzhugh, Stefan Cordes, Tiffani Taylor, Wynona Coles, Katherine Roskom, Mary Link, Matthew M Hsieh, John F Tisdale

Open access · bronzeAbstract read
In one paragraph

Article in Blood, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 107 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
107citing papers in PubMed, 1 pooled it
8.8field-weighted citation impact, top 2% 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

107 citing papers in PubMed, 1 synthesis or guideline pooled it, 163 citations in OpenAlex.

  1. Guideline
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  7. Post-Transcriptional Genetic Silencing ofThe New England journal of medicine · 2021
    Trial
  8. Outcomes of Related and Unrelated Donor Searches Among Patients with Primary Immunodeficiency Diseases Referred for Allogeneic Hematopoietic Cell Transplantation.Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation · 2019
    Trial
  9. Low Exposure Busulfan Conditioning to Achieve Sufficient Multilineage Chimerism in Patients with Severe Combined Immunodeficiency.Biology of blood and marrow transplantation : journal of the American Society for Blood and Marrow Transplantation · 2019
    Trial
  10. Article
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  17. Amplified genome editing bybioRxiv : the preprint server for biology · 2026
    Article
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  19. Article
  20. Review

47 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

8 authors at 3 institutions in 1 country.

Courtney D FitzhughSickle Cell Branch, National Heart, Lung, and Blood Institute (NHLBI).ORCID 0000-0002-5306-7167
Stefan CordesHematology Branch, NHLBI, National Institutes of Health, Bethesda, MD.ORCID 0000-0003-0823-6504
Tiffani TaylorMolecular and Clinical Hematology Branch, National Institute of Diabetes and Digestive and Kidney Diseases/NHLBI, and.
Wynona ColesMolecular and Clinical Hematology Branch, National Institute of Diabetes and Digestive and Kidney Diseases/NHLBI, and.
Katherine RoskomSickle Cell Branch, National Heart, Lung, and Blood Institute (NHLBI).
Mary LinkMolecular and Clinical Hematology Branch, National Institute of Diabetes and Digestive and Kidney Diseases/NHLBI, and.
Matthew M HsiehMolecular and Clinical Hematology Branch, National Institute of Diabetes and Digestive and Kidney Diseases/NHLBI, and.ORCID 0000-0002-3706-6615
John F TisdaleMolecular and Clinical Hematology Branch, National Institute of Diabetes and Digestive and Kidney Diseases/NHLBI, and.
National Institute of Diabetes and Digestive and Kidney Diseases · USNational Heart Lung and Blood Institute · USNational Institutes of Health · US

Funding

Nonmyeloablative haploidentical peripheral blood stem cell transplantation in congenital anemiasZIAHL006211 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI FITZHUGH, COURTNEY · 2016 to 2025
$19.4M
Nonmyeloablative allogeneic PBSC in globin disordersZIAHL006007 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI TISDALE, JOHN · 2009 to 2025
$18.4M
6 · The paper itself

Abstract

Novel curative therapies using genetic transfer of normal globin-producing genes into autologous hematopoietic stem cells (HSCs) are in clinical trials for patients with sickle cell disease (SCD). The percentage of transferred globin necessary to cure SCD is currently not known. In the setting of allogeneic nonmyeloablative HSC transplants (HSCTs), stable mixed chimerism is sufficient to reverse the disease. We regularly monitored 67 patients after HSCT. After initially robust engraftment, 3 of these patients experienced declining donor myeloid chimerism (DMC) levels with eventual return of disease. From this we discovered that 20% DMC is necessary to reverse the sickle phenotype. We subsequently developed a mathematical model to test the hypothesis that the percentage of DMC necessary is determined solely by differences between donor and recipient red blood cell (RBC) survival times. In our model, the required 20% DMC can be entirely explained by the large differences between donor and recipient RBC survival times. Our model predicts that the requisite DMC and therefore necessary level of transferred globin is lowest in patients with the highest reticulocyte counts and concomitantly shortened RBC lifespans.

Indexed as

Hematopoietic Stem Cell TransplantationTissue DonorsAdultAnemia, Sickle CellHemoglobin, SickleHomozygoteHumansMyeloid CellsPhenotypeTransplantation ChimeraTransplantation, HomologousYoung AdultHemoglobin, Sickle

Identifiers

PMID28887325
PMCPMC5659067
OpenAlexW2751401377

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.