Evidence map›Paper›PMID 32637902›Full record

ArticleEClinicalMedicine2020

The impact of pre-existing HLA and red blood cell antibodies on transfusion support and engraftment in sickle cell disease after nonmyeloablative hematopoietic stem cell transplantation from HLA-matched sibling donors: A prospective, single-center, observational study.

Robert Sheppard Nickel, Willy A Flegel, Sharon D Adams, Jeanne E Hendrickson, Hua Liang, John F Tisdale, Matthew M Hsieh

Open access · goldAbstract read
In one paragraph

Article in EClinicalMedicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 12 papers.

0numbers the graph read from it
0cells of the map it votes in
12citing papers in PubMed
1.1field-weighted citation impact, top 20% 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

12 citing papers in PubMed, 20 citations in OpenAlex.

  1. ABO-Mismatch Hematopoietic Stem Cell Transplantation with Pre-existing Red Cell Alloantibody Resembling a Case of Post-transplant Autoimmune Hemolytic Anemia.Indian journal of hematology & blood transfusion : an official journal of Indian Society of Hematology and Blood Transfusion · 2025
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  8. Alloimmunization and hyperhemolysis in sickle cell disease.Hematology. American Society of Hematology. Education Program · 2023
    Article
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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 5 institutions in 1 country.

Robert Sheppard NickelChildren's National Hospital, Division of Hematology, 111 Michigan Ave NW, Washington, DC 20010, United States.
Willy A FlegelDepartment of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD, United States.
Sharon D AdamsDepartment of Transfusion Medicine, NIH Clinical Center, National Institutes of Health, Bethesda, MD, United States.
Jeanne E HendricksonDepartments of Laboratory Medicine and Pediatrics, Yale School of Medicine, New Haven, CT, United States.
Hua LiangThe George Washington University, Department of Statistics, Washington, DC, United States.
John F TisdaleCellular and Molecular Therapeutics Branch, National Institutes of Health, Bethesda, MD, United States.
Matthew M HsiehCellular and Molecular Therapeutics Branch, National Institutes of Health, Bethesda, MD, United States.
National Institutes of Health · USNational Institutes of Health Clinical Center · USChildren's National · USGeorge Washington University · USYale University · US

Funding

Yale Clinical and Translational Science Award (U Component)UL1TR001863 · NCATS · YALE UNIVERSITY · PI John H. Krystal, LUCILA OHNO-MACHADO · 2016 to 2026
$102.9M
Nonmyeloablative allogeneic PBSC in globin disordersZ01HL006007 · NHLBI · NATIONAL HEART, LUNG, AND BLOOD INSTITUTE · PI TISDALE, JOHN · 2008 to 2008
$384k
Intramural NIH HHS Z01 HL006007Intramural NIH HHS Z99 CL999999NCATS NIH HHS UL1 TR001863
6 · The paper itself

Abstract

backgroundHematopoietic stem cell transplantation (HSCT) is curative for patients with sickle cell disease (SCD). Prior to HSCT, patients with SCD commonly receive RBC transfusions with some becoming RBC or HLA alloimmunized. This alloimmunization may impact post-HSCT transfusion requirements and donor engraftment.

methodsThe study population included patients with SCD transplanted on a single-center nonmyeloablative, HLA-matched sibling HSCT trial at the National Heart, Lung, and Blood Institute (NHLBI) who had a pre-HSCT sample available for HLA class I antibody testing. We evaluated transfusion requirements and engraftment outcomes comparing patients with and without pre-existing HLA and RBC antibodies.

findingsOf 36 patients studied, 10 (28%) had HLA class I antibodies and 11 (31%) had a history of RBC alloantibodies. Up to day +45 post-HSCT, patients with HLA antibodies received more platelet transfusions (median 2.5 vs 1,

interpretationPre-existing HLA and RBC alloantibodies are clinically significant for patients undergoing HLA-matched nonmyeloablative HSCT. Testing for both HLA and RBC antibodies is important to help estimate transfusion needs peri‑HSCT. The association of lower donor T cell chimerism and pre-existing RBC alloantibodies needs further investigation.

fundingNIH Clinical Center and NHLBI Intramural Research Program (Z99 CL999999, HL006007-11) and the Thrasher Research Fund.

Indexed as

AlloimmunizationBone marrow transplantChimerismGVHD, graft-versus-host diseaseHLA antibodyHLA, human leukocyte antigenHSCT, hematopoietic stem cell transplantationNHLBI, National Heart, Lung, and Blood InstituteNIH, National Institutes of HealthRBC, red blood cellSCD, sickle cell diseaseSickle cell diseaseTransfusion

Identifiers

PMID32637902
PMCPMC7327930
OpenAlexW3038004747

What Socratic holds

Textmetadata
LicenceCC BY-NC-ND
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 Socratic graph.