Evidence map›Paper›PMID 21470236›Full record

ArticleTransfusion2011

Blood group O and black race are independent risk factors for thrombotic thrombocytopenic purpura associated with severe ADAMTS13 deficiency.

Deirdra R Terrell, David G Motto, Johanna A Kremer Hovinga, Bernhard Lämmle, James N George, Sara K Vesely

Open access · greenAbstract read
In one paragraph

Article in Transfusion, 2011. 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
1.0field-weighted citation impact, top 25% 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, 34 citations in OpenAlex.

  1. Effect of Blood Groups on Clinical Presentations and Treatment Outcomes in Immune Thrombotic Thrombocytopenic Purpura Patients with Severe ADAMTS13 Deficiency: A Multi-Center Experience.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2023
    Article
  2. Article
  3. Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Review
  9. What's new in the diagnosis and pathophysiology of thrombotic thrombocytopenic purpura.Hematology. American Society of Hematology. Education Program · 2015
    Article
  10. Article
  11. Thrombotic thrombocytopenic purpura secondary to ABO group incompatible blood transfusion in a patient after cardiac surgery.Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2013
    Article
  12. 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

6 authors at 4 institutions in 2 countries.

Deirdra R TerrellDepartment of Biostatistics and Epidemiology, College of Public Health, The University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma 73126-0901, USA.
David G Motto
Johanna A Kremer Hovinga
Bernhard Lämmle
James N George
Sara K Vesely
University of Bern · CHUniversity of Oklahoma Health Sciences Center · USUniversity Hospital of Bern · CHUniversity of Iowa · US

Funding

Oklahoma-UT Southwestern Hemostasis ConsortiumU01HL072283 · NHLBI · UNIVERSITY OF OKLAHOMA HLTH SCIENCES CTR · PI GEORGE, JAMES N · 2002 to 2013
$2.6M
NHLBI NIH HHS 1K08HL07653901NHLBI NIH HHS 1U01HL72283-07S1NHLBI NIH HHS U01 HL072283
6 · The paper itself

Abstract

backgroundIt has been postulated that blood group O subjects may be partially protected against thrombotic thrombocytopenic purpura (TTP) because they have lower plasma levels of von Willebrand factor. STUDY DESIGN AND

methodsThe Oklahoma TTP Registry enrolled 301 consecutive patients from November 13, 1995 (when systematic ADAMTS13 measurements began), through 2009; 281 (93%) patients had ADAMTS13 measurements. Patients were designated as having severe ADAMTS13 deficiency when the activity measurement by either method was less than 10%. ABO blood group was determined in all 281 patients. The observed frequency of blood group O was compared to the expected frequency. The association between severe ADAMTS13 deficiency and blood group, race, sex, and age were analyzed by logistic regression.

resultsThe frequency of blood group O was unexpectedly and significantly greater than the race-ethnicity-adjusted expected frequency in 65 patients with severe ADAMTS13 deficiency (60.0% vs. 47.4%, p = 0.042) but not in 216 patients without severe ADAMTS13 deficiency (44.9% vs. 46.5%, p = 0.639). Blood group O and race-ethnicity were independently associated with severe ADAMTS13 deficiency among patients with TTP. The probability for severe ADAMTS13 deficiency was 45.8% with O and 32.1% with non-O blood groups for black patients and 24.1% with O and 15.1% with non-O blood groups for white patients.

conclusionAmong patients with TTP and severe ADAMTS13 deficiency the relative frequency of patients with blood group O was greater than expected, suggesting that blood group O may be a risk factor for TTP associated with severe ADAMTS13 deficiency.

Indexed as

ABO Blood-Group SystemBlack or African AmericanADAM ProteinsADAMTS13 ProteinAdolescentAdultAgedAge FactorsAsianFemaleHispanic or LatinoHumansIndians, North AmericanMaleMiddle AgedOklahomaABO Blood-Group SystemADAM ProteinsADAMTS13 ProteinADAMTS13 protein, human

Identifiers

PMID21470236
PMCPMC3151471
OpenAlexW2105664415

What OpenQuestion holds

Textmetadata
LicenceTDM
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.