Evidence map›Paper›PMID 36325821›Full record

ArticleJournal of cutaneous pathology2023

A novel method to assess copy number variation in melanoma: Droplet digital PCR for precise quantitation of the RREB1 gene in formalin-fixed, paraffin-embedded melanocytic neoplasms, a proof-of-concept study.

Keegan O'Hern, Rachael Barney, Meagan Chambers, Catherine Baker, Mirjana Stevanovic, Gregory J Tsongalis, Edward Hughes, Aravindhan Sriharan

Abstract read
In one paragraph

Article in Journal of cutaneous pathology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
6citing papers in PubMed, 1 pooled it
0.5field-weighted citation impact, top 33% 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

6 citing papers in PubMed, 1 synthesis or guideline pooled it, 6 citations in OpenAlex.

  1. Pooled it
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  3. Article
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  5. Article
  6. Detection, Quantification, and Elimination of Wolbachia in Bed Bugs.Methods in molecular biology (Clifton, N.J.) · 2024
    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

8 authors at 2 institutions in 1 country.

Keegan O'HernDartmouth Geisel School of Medicine, Hanover, New Hampshire, USA.ORCID https://orcid.org/0000-0003-1036-4601
Rachael BarneyClinical Genomics and Advanced Technology Laboratory, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.
Meagan ChambersDartmouth Geisel School of Medicine, Hanover, New Hampshire, USA.
Catherine BakerDartmouth Geisel School of Medicine, Hanover, New Hampshire, USA.
Mirjana StevanovicDartmouth Geisel School of Medicine, Hanover, New Hampshire, USA.
Gregory J TsongalisClinical Genomics and Advanced Technology Laboratory, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.
Edward HughesClinical Genomics and Advanced Technology Laboratory, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.
Aravindhan SriharanDepartment of Pathology and Laboratory Medicine, Dartmouth-Hitchcock Medical Center, Lebanon, New Hampshire, USA.
Dartmouth College · USDartmouth–Hitchcock Medical Center · US

Funding

Translational Engineering in Cancer (TEC)P30CA023108 · NCI · DARTMOUTH COLLEGE · PI Fred W Kolling IV · 1985 to 2026
$91.3M
NCI NIH HHS 5P30CA023108-37NCI NIH HHS P30 CA023108
6 · The paper itself

Abstract

backgroundMelanocytic neoplasms can be challenging to diagnose. One well-established diagnostic aid is the detection of copy number variation (CNV) in a few key genetic loci using conventional methods such as fluorescence in situ hybridization (FISH) and chromosomal microarray (CMA). Droplet digital polymerase chain reaction (ddPCR) is a novel, cost-effective, rapid, and automated method to detect CNV.

methodsWe perform the first investigation of ddPCR to assay Ras-responsive element-binding protein-1 (RREB1), the most common CNV in melanoma using formalin-fixed, paraffin-embedded (FFPE) melanocytic lesion samples; CMA data are used as the gold standard. Archival samples from 2013 to 2021 were analyzed, including 153 data points from 39 FFPE samples representing 34 patients. Benign, borderline, malignant, and metastatic melanocytic neoplasms were examined.

resultsddPCR showed a sensitivity and specificity of 93.8% and 95.7% using one reference gene, and 87.5% and 100% using a different reference gene for RREB1 gain detection.

conclusionsHere we show that ddPCR can provide inexpensive, rapid, and robust data on the commonest copy number alteration in melanoma. Future development and validation could provide a useful ancillary tool in the diagnosis of challenging melanocytic lesions.

Indexed as

DNA Copy Number VariationsMelanomaDNA-Binding ProteinsFormaldehydeHumansIn Situ Hybridization, FluorescenceParaffin EmbeddingPolymerase Chain ReactionTranscription FactorsDNA-Binding ProteinsFormaldehydeRREB1 protein, humanTranscription Factorsdroplet digital PCRmelanocytic nevusmelanomaRREB1

Identifiers

PMID36325821
PMCPMC13231452
OpenAlexW4308060676

What OpenQuestion holds

Textmetadata
LicenceTDM
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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.