Evidence map›Paper›PMID 17236128›Full record

ArticleAmerican journal of human genetics2007

CGG-repeat expansion in the DIP2B gene is associated with the fragile site FRA12A on chromosome 12q13.1.

Birgitta Winnepenninckx, Kim Debacker, Jacqueline Ramsay, Dominique Smeets, Arie Smits, David R FitzPatrick, R Frank Kooy

Open access · bronzeAbstract read
In one paragraph

Article in American journal of human genetics, 2007. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing papers in PubMed
2.2field-weighted citation impact, top 11% 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

63 citing papers in PubMed, 129 citations in OpenAlex.

  1. Article
  2. No Evidence for an Association Between DIP2B Repeat Expansion and Neurological Disease.Movement disorders : official journal of the Movement Disorder Society · 2026
    Article
  3. Article
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  5. Single-base mJournal of virology · 2025
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  6. Review
  7. Transcriptomic profiling ofComputational and structural biotechnology journal · 2024
    Article
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  13. Review
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  20. Review

3 more citing papers are in PubMed but not listed here.

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

7 authors at 3 institutions in 3 countries.

Birgitta WinnepenninckxDepartment of Medical Genetics, University of Antwerp, Antwerp, Belgium.
Kim Debacker
Jacqueline Ramsay
Dominique Smeets
Arie Smits
David R FitzPatrick
R Frank Kooy
University of Antwerp · BEMRC Human Genetics UnitRadboud University Nijmegen · NL

Funding

Medical Research Council MC_U127561093
6 · The paper itself

Abstract

A high level of cytogenetic expression of the rare folate-sensitive fragile site FRA12A is significantly associated with mental retardation. Here, we identify an elongated polymorphic CGG repeat as the molecular basis of FRA12A. This repeat is in the 5' untranslated region of the gene DIP2B, which encodes a protein with a DMAP1-binding domain, which suggests a role in DNA methylation machinery. DIP2B mRNA levels were halved in two subjects with FRA12A with mental retardation in whom the repeat expansion was methylated. In two individuals without mental retardation but with an expanded and methylated repeat, DIP2B expression was reduced to approximately two-thirds of the values observed in controls. Interestingly, a carrier of an unmethylated CGG-repeat expansion showed increased levels of DIP2B mRNA, which suggests that the repeat elongation increases gene expression, as previously described for the fragile X-associated tremor/ataxia syndrome. These data suggest that deficiency of DIP2B, a brain-expressed gene, may mediate the neurocognitive problems associated with FRA12A.

Indexed as

Chromosome Fragile SitesTrinucleotide Repeat ExpansionAdolescentAdultAmino Acid SequenceBase SequenceChild, PreschoolChromosomes, Human, Pair 12DNA MethylationFemaleHeterozygoteHumansIntellectual DisabilityLikelihood FunctionsMaleMolecular Sequence DataDIP2B protein, humanNerve Tissue ProteinsRNA, Messenger

Identifiers

PMID17236128
PMCPMC1785358
OpenAlexW2113501697

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.