Evidence map›Paper›PMID 29527977›Full record

ArticleEpigenetics2018

Droplet digital PCR is an accurate method to assess methylation status on FFPE samples.

Liesbeth Van Wesenbeeck, Leen Janssens, Hanne Meeuws, Ole Lagatie, Lieven Stuyver

Open access · hybridAbstract read
In one paragraph

Article in Epigenetics, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.6field-weighted citation impact, top 17% 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

22 citing papers in PubMed, 58 citations in OpenAlex.

  1. MedComm · 2026
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  14. Novel DNA Methylation Biomarker Panel for Detection of Esophageal Adenocarcinoma and High-Grade Dysplasia.Clinical cancer research : an official journal of the American Association for Cancer Research · 2022
    Article
  15. AhRR methylation contributes to disease progression in urothelial bladder cancer.Cancer biomarkers : section A of Disease markers · 2022
    Article
  16. The utility of cfDNA in TGCT patient management: a systematic review.Therapeutic advances in medical oncology · 2022
    Review
  17. Article
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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

5 authors at 1 institution in 1 country.

Liesbeth Van Wesenbeecka Janssen Diagnostics, A Division of Janssen Pharmaceutica , Beerse , Belgium.ORCID 0000-0002-1760-9854
Leen Janssensa Janssen Diagnostics, A Division of Janssen Pharmaceutica , Beerse , Belgium.
Hanne Meeuwsa Janssen Diagnostics, A Division of Janssen Pharmaceutica , Beerse , Belgium.
Ole Lagatiea Janssen Diagnostics, A Division of Janssen Pharmaceutica , Beerse , Belgium.ORCID 0000-0002-0638-1313
Lieven Stuyvera Janssen Diagnostics, A Division of Janssen Pharmaceutica , Beerse , Belgium.
Janssen (Belgium) · BE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Most tissue samples available for cancer research are archived as formalin-fixed paraffin-embedded (FFPE) samples. However, the fixation process and the long storage duration lead to DNA fragmentation and hinder epigenome analysis. The use of droplet digital PCR (ddPCR) to detect DNA methylation has recently emerged. In this study, we compare an optimized ddPCR assay with a conventional qPCR assay by targeting a dilution series of control DNA. In addition, we compare the ddPCR technology with results from Infinium arrays targeting two separate CpG sites on a set of colon adenoma FFPE samples. Our data demonstrate that qPCR and ddPCR assess methylation status equally well on dilution controls with a high DNA input. However, the methylation detection on low-input samples is more accurate using ddPCR. The proposed primer design (methylation-independent primers with amplification of solely the converted DNA target) will allow for methylation detection, independent of bisulfite conversion efficiency. Those data show that ddPCR can be used for methylation analysis on FFPE samples with a wide range of DNA input and that the precision of the assay depends largely on the total amount of amplifiable DNA fragments. Due to accessibility of the ddPCR technology and its accuracy on high- as well as low-DNA input samples, we propose the use of this approach for studies involving degraded FFPE samples.

Indexed as

DNA FragmentationDNA MethylationEpigenomicsHumansNeoplasmsParaffin EmbeddingPolymerase Chain Reactiondroplet digital PCRFFPEInfinium arraymethylationqPCR

Identifiers

PMID29527977
PMCPMC5997148
OpenAlexW2793137940

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
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.