Evidence map›Paper›PMID 22265928›Full record

ArticleBlood cells, molecules & diseases2012

Common TMPRSS6 mutations and iron, erythrocyte, and pica phenotypes in 48 women with iron deficiency or depletion.

Pauline L Lee, J Clayborn Barton, Peter L Khaw, Sarah Y Bhattacharjee, James C Barton

Abstract read
In one paragraph

Article in Blood cells, molecules & diseases, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
0.9field-weighted citation impact, top 26% 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

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Trial
  4. International journal of molecular sciences · 2021
    Article
  5. Review
  6. Article
  7. Ask about ice, then consider iron.Journal of the American Association of Nurse Practitioners · 2016
    Article
  8. Article
  9. Physiology of iron metabolism.Transfusion medicine and hemotherapy : offizielles Organ der Deutschen Gesellschaft fur Transfusionsmedizin und Immunhamatologie · 2014
    Review
  10. Pagophagia: A case series.Industrial psychiatry journal
    Article
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

5 authors at 2 institutions in 1 country.

Pauline L LeeDepartment of Molecular and Experimental Medicine, Scripps Research Institute, La Jolla, CA, USA. plee@scripps.edu
J Clayborn Barton
Peter L Khaw
Sarah Y Bhattacharjee
James C Barton
Scripps Research Institute · USUniversity of Alabama at Birmingham · US

Funding

HEMOCHROMATOSIS--EPIDEMIOLOGY AND MOLECULAR MECHANISMSR01DK053505 · NIDDK · SCRIPPS RESEARCH INSTITUTE, THE · PI LEE, PAULINE L · 1998 to 2010
$7.8M
NIDDK NIH HHS R01 DK053505NIDDK NIH HHS R01 DK53505-12
6 · The paper itself

Abstract

backgroundTMPRSS6 A736V is associated with lower transferrin saturation (TS), hemoglobin (Hb), and mean corpuscular volume (MCV) levels in general adult populations. We sought to identify relationships of TMPRSS6 K253E, A736V, and Y739Y to iron, erythrocyte, and pica phenotypes in women with iron deficiency or depletion.

methodsWe tabulated observations on 48 outpatient non-pregnant women who had iron deficiency (serum ferritin (SF) <14pmol/L and TS <10%) or iron depletion (SF<112pmol/L). We performed direct sequencing of TMPRSS6 exons 7 and 17 in each patient. We used age, TS, SF, Hb, MCV, pica, and TMPRSS6 allele positivity (dichotomous) or mutation genotypes (trichotomous) as variables for analyses.

resultsForty-six women were white; two were black. 58.3% had iron deficiency. 45.8% had pica (pagophagia, each case). Allele frequencies were 41.7% (K253E), 36.5% (A736V), and 39.6% (Y739Y). K253E frequency was greater in women with TS ≥10% (p=0.0001). Y739Y was more frequent in women with TS <10% (p=0.0135). Mean TS was also lower in women positive for Y739Y (6±4% vs. 13±16%, respectively; p=0.0021). In multiple regressions, neither K253E, A736V, nor Y739Y genotypes were significantly associated with other variables.

conclusionsTMPRSS6 K253E frequency was greater in women with TS ≥10%. Frequency of Y739 was greater in women with TS <10%. Mean TS was lower in women with Y739Y. We observed no other significant relationship of TMPRSS6 K253E, A736V, or Y739Y with iron, erythrocyte, or pica phenotypes.

Indexed as

Erythrocyte IndicesMutationAdultAgedAnemia, Iron-DeficiencyFemaleGene FrequencyHumansIronMembrane ProteinsMiddle AgedPicaSerine EndopeptidasesIronMembrane ProteinsSerine EndopeptidasesTMPRSS6 protein, human

Identifiers

PMID22265928
PMCPMC3271795
OpenAlexW1987612088

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.