Evidence map›Paper›PMID 30900174›Full record

ArticleMethods in molecular biology (Clifton, N.J.)2019

Assays for Determining Repeat Number, Methylation Status, and AGG Interruptions in the Fragile X-Related Disorders.

Bruce E Hayward, Karen Usdin

Open access · greenAbstract read
In one paragraph

Article in Methods in molecular biology (Clifton, N.J.), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
1.8field-weighted citation impact, top 10% 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

5 citing papers in PubMed, 7 citations in OpenAlex.

  1. Repeat expansions inbioRxiv : the preprint server for biology · 2026
    Article
  2. Article
  3. Article
  4. Article
  5. 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

2 authors at 1 institution in 1 country.

Bruce E HaywardSection on Gene Structure and Disease, Laboratory of Cell and Molecular Biology, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA.
Karen UsdinSection on Gene Structure and Disease, Laboratory of Cell and Molecular Biology, National Institute of Diabetes, Digestive and Kidney Diseases, National Institutes of Health, Bethesda, MD, USA. ku@helix.nih.gov.
National Institutes of Health · US

Funding

Understanding the mutational mechanism responsible for the Repeat Expansion DiseasesZIADK057808 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI USDIN, KAREN P. · 2009 to 2025
$14.1M
The pathology consequences of repeat expansion in the Repeat Expansion DiseasesZIADK057602 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI USDIN, KAREN P. · 2009 to 2025
$11.5M
Disease pathology in the Fragile X-associated disordersZIADK057809 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI USDIN, KAREN P. · 2009 to 2013
$1.6M
Mechanism of repeat expansion in Fragile X syndromeZ01DK057808 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI USDIN, KAREN P. · 2007 to 2008
$570k
Intramural NIH HHS Z01 DK057808Intramural NIH HHS ZIA DK057808Intramural NIH HHS ZIA DK057809
6 · The paper itself

Abstract

Knowledge of the CGG•CCG-repeat number, AGG interruption status, and the extent of DNA methylation of the FMR1 gene are vital for both diagnosis of the fragile X-related disorders and for basic research into disease mechanisms. We describe here assays that we use in our laboratory to assess these parameters. Our assays are PCR-based and include one for repeat size that can also be used to assess the extent of methylation and a related assay that allows the AGG interruption pattern to be reliably determined even in women. A second more quantitative methylation assay is also described. We also describe our method for cloning of repeats to generate the reference standards necessary for the accurate determination of repeat number and AGG interruption status.

Indexed as

DNA MethylationTrinucleotide Repeat ExpansionFragile X Messenger Ribonucleoprotein 1Fragile X SyndromeHumansFMR1 protein, humanFragile X Messenger Ribonucleoprotein 1AGG interruptionsAGG PCR assayFMR1FMR1-related disorders (FMR1 disorders)Fragile X syndrome (FXS)FX-associated primary ovarian insufficiency (FXPOI)FX-associated tremor and ataxia syndrome (FXTAS)qPCRQuantitative methylation assayRepeat PCR

Identifiers

PMID30900174
PMCPMC9435319
OpenAlexW2923395068

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.