Evidence map›Paper›PMID 25042611›Full record

ArticleAmerican journal of hematology2014

The genetics of hemoglobin A2 regulation in sickle cell anemia.

Paula J Griffin, Paola Sebastiani, Heather Edward, Clinton T Baldwin, Mark T Gladwin, Victor R Gordeuk, David H K Chui, Martin H Steinberg

Abstract readComparative Study
In one paragraph

Article in American journal of hematology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
14citing papers in PubMed, 1 pooled it
0.8field-weighted citation impact, top 27% 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

14 citing papers in PubMed, 1 synthesis or guideline pooled it, 27 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Article
  4. Thalassemia and erythroid transcription factorArchives of medical science : AMS · 2022
    Article
  5. Article
  6. Article
  7. Unique Polymorphisms atJournal of personalized medicine · 2021
    Article
  8. Article
  9. Article
  10. Observational
  11. Article
  12. Biomarker signatures of sickle cell disease severity.Blood cells, molecules & diseases · 2018
    Article
  13. Article
  14. Review
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.

Paula J GriffinDepartment of Biostatistics, Boston University School of Public Health, Boston, Massachusetts.
Paola Sebastiani
Heather Edward
Clinton T Baldwin
Mark T Gladwin
Victor R Gordeuk
David H K Chui
Martin H Steinberg
Boston University · USUniversity of Illinois Chicago · USUniversity of Pittsburgh · US

Funding

Vascular Subphenotypes of Lung DiseaseP01HL103455 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GLADWIN, MARK T · 2011 to 2020
$26.1M
UVDM01RR010284 · NCRR · HOWARD UNIVERSITY · PI TAYLOR, ROBERT E. · 1996 to 2010
$17.4M
Storage Lesion in Banked Blood Due to Disruption of Nitric Oxide HomeostasisR01HL098032 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI Mark T Gladwin · 2009 to 2026
$12.5M
Pulmonary Hypertension and the Hypoxic Response in SCDR01HL079912 · NHLBI · HOWARD UNIVERSITY · PI GORDEUK, VICTOR R · 2005 to 2008
$7.4M
Genome-Wide Association Studies in Sickle Cell Anemia and in CentenariansR01HL087681 · NHLBI · BOSTON UNIVERSITY MEDICAL CAMPUS · PI STEINBERG, MARTIN H. · 2007 to 2010
$6.0M
RESEARCH TRAINING IN BLOOD DISEASES AND RESOURCEST32HL007501 · NHLBI · BOSTON UNIVERSITY MEDICAL CAMPUS · PI LERNER, ADAM, STEINBERG, MARTIN H. · 1985 to 2018
$5.4M
Interdisciplinary Training for BiostatisticiansT32GM074905 · NIGMS · BOSTON UNIVERSITY MEDICAL CAMPUS · PI WHITE, LAURA FORSBERG · 2005 to 2019
$3.0M
Genetic Diversity of Sickle Cell AnemiaRC2HL101212 · NHLBI · BOSTON UNIVERSITY MEDICAL CAMPUS · PI STEINBERG, MARTIN H. · 2009 to 2010
$3.0M
Howard University Research Scientist AwardR25HL003679 · NHLBI · HOWARD UNIVERSITY · PI NEKHAI, SERGEI · 2005 to 2009
$1.7M
Myoglobin as a Nitrite Reductase that Regulates Hypoxic Cardiac NO SignalingR01HL096973 · NHLBI · UNIVERSITY OF PITTSBURGH AT PITTSBURGH · PI GLADWIN, MARK T, SHIVA, SRUTI · 2010 to 2013
$1.5M
NCRR NIH HHS 2M01 RR10284-10NCRR NIH HHS M01 RR010284NHLBI NIH HHS 2R25 HL003679-8NHLBI NIH HHS 5T32 HL007501NHLBI NIH HHS P01 HL103455NHLBI NIH HHS P01HL103455NHLBI NIH HHS R01 HL079912NHLBI NIH HHS R01 HL087681NHLBI NIH HHS R01 HL096973NHLBI NIH HHS R01HL096973NHLBI NIH HHS R01 HL098032NHLBI NIH HHS R01HL098032NHLBI NIH HHS R01 HL87681NHLBI NIH HHS R25 HL003679NHLBI NIH HHS RC2 HL101212NHLBI NIH HHS T32 HL007501NIGMS NIH HHS T32 GM074905NIGMS NIH HHS T32GM074905
6 · The paper itself

Abstract

Hemoglobin A2 , a tetramer of α- and δ-globin chains, comprises less than 3% of total hemoglobin in normal adults. In northern Europeans, single nucleotide polymorphisms (SNPs) in the HBS1L-MYB locus on chromosome 6q and the HBB cluster on chromosome 11p were associated with HbA2 levels. We examined the genetic basis of HbA2 variability in sickle cell anemia using genome-wide association studies. HbA2 levels were associated with SNPs in the HBS1L-MYB interval and SNPs in BCL11A. These effects are mediated by the association of these loci with γ-globin gene expression and fetal hemoglobin (HbF) levels. The association of polymorphisms downstream of the β-globin gene (HBB) cluster on chromosome 11 with HbA2 was not mediated by HbF. In sickle cell anemia, levels of HbA2 appear to be modulated by trans-acting genes that affect HBG expression and perhaps also elements within the β-globin gene cluster. HbA2 is expressed pancellularly and can inhibit HbS polymerization. It remains to be seen if genetic regulators of HbA2 can be exploited for therapeutic purposes.

Indexed as

Age Factorsalpha-ThalassemiaAnemia, Sickle CellAsian Peoplebeta-GlobinsBlack or African AmericanCarrier ProteinsChromosomes, Human, Pair 11Chromosomes, Human, Pair 6Cohort Studiesdelta-GlobinsEuropeFemaleFetal Hemoglobingamma-GlobinsGene Expression RegulationBCL11A protein, humanbeta-GlobinsCarrier Proteinsdelta-GlobinsFetal Hemoglobingamma-GlobinsGTP-Binding ProteinsHBS1L protein, humanHemoglobin A2Hemoglobin, SickleHSP70 Heat-Shock ProteinsNuclear ProteinsPeptide Elongation FactorsRepressor ProteinsTrans-Activators

Identifiers

PMID25042611
PMCPMC4298130
OpenAlexW1618347557

What OpenQuestion holds

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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.