Evidence map›Paper›PMID 21651511›Full record

ReviewClinical genetics2011

CGG repeat in the FMR1 gene: size matters.

R Willemsen, J Levenga, B A Oostra

Open access · greenAbstract readReview
In one paragraph

Review in Clinical genetics, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 105 papers.

0numbers the graph read from it
0cells of the map it votes in
105citing papers in PubMed
12.2field-weighted citation impact, top 1% 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

105 citing papers in PubMed, 179 citations in OpenAlex.

  1. Effects of AFQ056 on language learning in fragile X syndrome.The Journal of clinical investigation · 2023
    Trial
  2. Memantine effects on verbal memory in fragile X-associated tremor/ataxia syndrome (FXTAS): a double-blind brain potential study.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2014
    Trial
  3. mSphere · 2026
    Article
  4. Article
  5. Effects of Gallic Acid on Sleep and Circadian Rhythm in aThe Yale journal of biology and medicine · 2026
    Article
  6. Review
  7. Article
  8. Screening of CGG Trinucleotide Repeats WithinJournal of the Korean Academy of Child and Adolescent Psychiatry · 2026
    Article
  9. Article
  10. Beyond Repetition: The Role of Gray Zone Alleles in the Upregulation ofInternational journal of molecular sciences · 2025
    Article
  11. In Utero Alcohol and Unsuitable Home Environmental Exposure Combined withInternational journal of molecular sciences · 2025
    Article
  12. Review
  13. Review
  14. Chromatin modifiers in neurodevelopment.Frontiers in molecular neuroscience · 2025
    Review
  15. Expanding Upon Genomics in Rare Diseases: Epigenomic Insights.International journal of molecular sciences · 2024
    Review
  16. Cells · 2024
    Review
  17. Article
  18. Review
  19. The Reproductive Lifespan of Ovarian Follicle.Reproductive sciences (Thousand Oaks, Calif.) · 2024
    Review
  20. Article

45 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

3 authors at 2 institutions in 1 country.

R WillemsenDepartment of Clinical Genetics, Erasmus MC, Rotterdam, The Netherlands.
J Levenga
B A Oostra
Erasmus MC · NLErasmus University Rotterdam · NL

Funding

Mouse Models of FXTAS: Defining Critical Periods and Molecular TargetsRL1NS062411 · NINDS · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BERMAN, ROBERT F · 2007 to 2011
$4.2M
Fragile X Related Genes Mental Retardiation/DevelopmentR01HD038038 · NICHD · BAYLOR COLLEGE OF MEDICINE · PI NELSON, DAVID LOREN · 1999 to 2009
$3.1M
Neuro Therapeutics Research Institute (1 of 6)UL1DE019583 · NIDCR · UNIVERSITY OF CALIFORNIA AT DAVIS · PI HAGERMAN, PAUL J · 2008 to 2011
$3.0M
NICHD NIH HHS R01 HD038038NICHD NIH HHS R01 HD38038NIDCR NIH HHS UL1 DE019583NIDCR NIH HHS UL1DE019583NINDS NIH HHS RL1 NS062411NINDS NIH HHS RL1NS062411
6 · The paper itself

Abstract

The FMR1 gene contains a CGG repeat present in the 5'-untranslated region which can be unstable upon transmission to the next generation. The repeat is up to 55 CGGs long in the normal population. In patients with fragile X syndrome (FXS), a repeat length exceeding 200 CGGs (full mutation: FM) generally leads to methylation of the repeat and the promoter region, which is accompanied by silencing of the FMR1 gene. The absence of FMR1 protein, FMRP, seen in FM is the cause of the mental retardation in patients with FXS. The premutation (PM) is defined as 55-200 CGGs. Female PM carriers are at risk of developing primary ovarian insufficiency. Elderly PM carriers might develop a progressive neurodegenerative disorder called fragile X-associated tremor/ataxia syndrome (FXTAS). Although arising from the mutations in the same gene, distinct mechanisms lead to FXS (absence of FMRP), FXTAS (toxic RNA gain-of-function) and FXPOI. The pathogenic mechanisms thought to underlie these disorders are discussed. This review gives insight on the implications of all possible repeat length categories seen in fragile X families.

Indexed as

5' Untranslated RegionsAgedAnimalsAtaxiaBrainDisease Models, AnimalDNA MethylationFemaleFragile X Messenger Ribonucleoprotein 1Fragile X SyndromeGene ExpressionGenetic Association StudiesGenotypeHumansMiceMice, Knockout5' Untranslated RegionsFMR1 protein, humanFragile X Messenger Ribonucleoprotein 1Prescription Drugs

Identifiers

PMID21651511
PMCPMC3151325
OpenAlexW2122400358

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.