Evidence map›Paper›PMID 15744037›Full record

ArticleJournal of medical genetics2005

Linkage to the FOXC2 region of chromosome 16 for varicose veins in otherwise healthy, unselected sibling pairs.

M Y M Ng, T Andrew, T D Spector, S Jeffery, Lymphoedema Consortium

Open access · bronzeAbstract readTwin Study
In one paragraph

Article in Journal of medical genetics, 2005. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
1.2field-weighted citation impact, top 21% 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

23 citing papers in PubMed, 71 citations in OpenAlex.

  1. Review
  2. Review
  3. Article
  4. Review
  5. Molecular Determinants of Chronic Venous Disease: A Comprehensive Review.International journal of molecular sciences · 2023
    Review
  6. Article
  7. Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Matrix Metalloproteinases in Remodeling of Lower Extremity Veins and Chronic Venous Disease.Progress in molecular biology and translational science · 2017
    Review
  13. Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Review
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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

5 authors at 3 institutions in 2 countries.

M Y M NgTwin Research and Genetic Epidemiology Unit, St. Thomas' Hospital, London SE1 7EH.
T Andrew
T D Spector
S Jeffery
Lymphoedema Consortium
St. Thomas Hospital · CASt George's, University of London · GBSt Thomas' Hospital · GB

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundThe FOXC2 gene on 16q24 is mutated in lymphoedema distichiasis (LD), in which varicose veins (VV) are a common feature. We hypothesised that this gene might be implicated in the development of VV in the normal population, therefore, after performing a classical twin study, we tested for linkage and association in white women. We also tested for linkage with haemorrhoids (H), as a separate venous anomaly at the same locus.

methodsA total of 2060 complete female twin pairs aged 18-80 years from the St Thomas' Adult UK Twin registry replied to questions on VV and H as part of a broader postal survey of 6600 twins (62% response rate). Dizygotic female twin pairs were tested for linkage and association to the candidate marker D16S520 (1903 individuals genotyped), which is located about 80 kb from FOXC2.

resultsCasewise concordance rates were significantly higher for monozygotic than dizygotic twins for both phenotypes (VV 67% v 45%; p = 2.2x10(-6); H 68% v 59%; p = 0.01; H including during pregnancy 73% v 64%; p = 2.1x10(-4)), corresponding to additive genetic heritabilities in liability of 86% (95% confidence interval (CI) 73% to 99%) for VV and 56-61% for H (95% CI 43% to 73%). The presence of VV and H were significantly correlated. We found significant evidence of linkage to the marker for VV (MLS(ASP) = 1.37, p = 0.01; GLM(ASP/DSP) Z = 3.17 p = 0.002), but no association. Both linkage and association tests were negative for H. The combined phenotype of having VV and H did not show any evidence of linkage or association.

conclusionThese results demonstrate VV and H to be heritable, related conditions, and the data strongly suggest FOXC2 to be implicated in the development of VV in the general population.

Indexed as

Genetic LinkageAdolescentAdultAgedAged, 80 and overAllelesChromosomes, Human, Pair 16FemaleForkhead Transcription FactorsGenetic TestingGenotypeHemorrhoidsHumansMiddle AgedPhenotypeTwin Studies as TopicForkhead Transcription Factorsmesenchyme fork head 1 protein

Identifiers

PMID15744037
PMCPMC1736007
OpenAlexW2110746103

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.