Evidence map›Paper›PMID 20798928›Full record

SynthesisOsteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA2011

Polymorphisms in the 5' flank of COL1A1 gene and osteoporosis: meta-analysis of published studies.

H Jin, E Evangelou, J P A Ioannidis, S H Ralston

Abstract readMeta-Analysis
In one paragraph

Synthesis in Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 25 papers, 3 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
25citing papers in PubMed, 3 pooled it
4.9field-weighted citation impact, top 5% 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

25 citing papers in PubMed, 3 syntheses or guidelines pooled it, 65 citations in OpenAlex.

  1. Pooled it
  2. Association of IL-6 G-174C polymorphism with bone mineral density.Journal of bone and mineral metabolism · 2014
    Pooled it
  3. Association of MTHFR C667T polymorphism with bone mineral density and fracture risk: an updated meta-analysis.Osteoporosis international : a journal established as result of cooperation between the European Foundation for Osteoporosis and the National Osteoporosis Foundation of the USA · 2012
    Pooled it
  4. Review
  5. The Influence of Clinical Factors and Genetic Variants ofInternational journal of molecular sciences · 2025
    Article
  6. The Impact of SelectedInternational journal of molecular sciences · 2025
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  7. Impact of theInternational journal of molecular sciences · 2024
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  9. TheInternational journal of burns and trauma · 2024
    Review
  10. Review
  11. Article
  12. Article
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  15. Article
  16. Article
  17. Article
  18. Identification of transcriptional factors and key genes in primary osteoporosis by DNA microarray.Medical science monitor : international medical journal of experimental and clinical research · 2015
    Article
  19. Association of COL1A1 polymorphisms with osteoporosis: a meta-analysis of clinical studies.International journal of clinical and experimental medicine · 2015
    Article
  20. 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

4 authors at 3 institutions in 3 countries.

H JinRheumatic Disease Unit, Molecular Medicine Centre, Institute of Genetics and Molecular Medicine, Western General Hospital, University of Edinburgh, Edinburgh EH42XU, UK.
E Evangelou
J P A Ioannidis
S H Ralston
Western General Hospital · GBTufts University · USUniversity of Ioannina · GR

Funding

CARDIOVASCULAR DISEASE PREVENTION TRAINING PROGRAMT32HL007034 · NHLBI · STANFORD UNIVERSITY · PI GARDNER, CHRISTOPHER D · 1985 to 2020
$8.7M
NHLBI NIH HHS T32 HL007034
6 · The paper itself

Abstract

unlabelledA meta-analysis of studies was conducted involving 24,511 participants with 7,864 fractures in which polymorphisms in the 5' flank of COL1A1 (rs1107946, rs2412298, and rs1800012) were related to osteoporosis phenotypes. Polymorphisms of all three sites were associated with BMD, and rs1800012 was associated with fracture but effect sizes were modest. INTRODUCTION AND HYPOTHESIS: Polymorphisms in the 5' flank of COL1A1 gene have been implicated as genetic markers for susceptibility to osteoporosis, but previous studies have yielded conflicting results.

methodsWe conducted a meta-analysis of 32 studies including 24,511 participants and 7,864 fractures in which alleles at the -1997G/T (rs1107946), -1663in/delT (rs2412298), and Sp1 binding site polymorphisms (rs1800012) of COL1A1 had been related to bone mineral density (BMD) or fracture.

resultsFor the Sp1 polymorphism, BMD values in TT homozygotes were 0.13 units [95% CI, 0.03 to 0.24] lower at the spine (p = 0.01) and 0.16 units [0.10 to 0.23] lower at the hip (p = 1 x 10⁻⁶) than GG homozygotes. Clinical fractures were 1.31-fold [1.04-1.65] increased in TT homozygotes (p = 0.02) and vertebral fractures were 1.34-fold [1.01-1.77] increased (p = 0.04). We also observed associations between spine BMD and allelic variants at the -1997G/T (p = 0.05) and the -1663indelT (p = 0.009) sites. We found no association between alleles at the -1997G/T or -1663indelT sites and fracture but power was limited.

conclusionsThe COL1A1 Sp1 polymorphism is associated with a modest reduction in BMD and an increased risk of fracture, although we cannot fully exclude the possibility that the results may have been influenced by publication bias. Further studies are required to fully evaluate the contribution of the -1997G/T and -1663in/delT sites to these phenotypes and to determine if they interact with the Sp1 polymorphism to regulate susceptibility to osteoporosis.

Indexed as

Genetic Predisposition to DiseaseAdultAgedAged, 80 and overBone DensityCollagen Type ICollagen Type I, alpha 1 ChainFemaleFemur NeckHumansLumbar VertebraeMaleMiddle AgedOsteoporosisOsteoporotic FracturesPolymorphism, GeneticCollagen Type ICollagen Type I, alpha 1 Chain

Identifiers

PMID20798928
PMCPMC4696542
OpenAlexW2169246499

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.