Evidence map›Paper›PMID 27717381›Full record

ArticleGenome biology2016

Critical evaluation of the Illumina MethylationEPIC BeadChip microarray for whole-genome DNA methylation profiling.

Ruth Pidsley, Elena Zotenko, Timothy J Peters, Mitchell G Lawrence, Gail P Risbridger, Peter Molloy, Susan Van Djik, Beverly Muhlhausler, Clare Stirzaker, Susan J Clark

Registry-linked trialAbstract readEvaluation Study
In one paragraph

Article in Genome biology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT03923335 (The Predictive Value of Guangzhou Panel for Recurrence in Early-stage Colorectal Cancer), which is not on this map. Cited by 906 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
906citing papers in PubMed, 5 pooled it
–field-weighted citation impact
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.

NCT03923335 not yet recruitingnot on this mapstarted 2019, after this paper: background citation

The Predictive Value of Guangzhou Panel for Recurrence in Early-stage Colorectal Cancer

TypeobservationalSponsorSixth Affiliated Hospital, Sun Yat-sen UniversityRan2019 to 2026Enrolled287ConditionsColorectal NeoplasmsArmsDNA methylation detection
3 · Its place in the literature

Who cites it

906 citing papers in PubMed, 5 syntheses or guidelines pooled it.

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846 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

10 authors.

Ruth PidsleyEpigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, 2010, NSW, Australia.
Elena ZotenkoEpigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, 2010, NSW, Australia.
Timothy J PetersEpigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, 2010, NSW, Australia.
Mitchell G LawrenceProstate Research Group, Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash Partners Comprehensive Cancer Consortium, Monash University, Clayton, Melbourne, VIC, 3800, Australia.
Gail P RisbridgerProstate Research Group, Department of Anatomy and Developmental Biology, Biomedicine Discovery Institute, Monash Partners Comprehensive Cancer Consortium, Monash University, Clayton, Melbourne, VIC, 3800, Australia.
Peter MolloyCSIRO, Health and Biosecurity, PO Box 52, North Ryde, NSW, 1670, Australia.
Susan Van DjikCSIRO, Health and Biosecurity, PO Box 52, North Ryde, NSW, 1670, Australia.
Beverly MuhlhauslerFOODplus Research Centre, Department of Food and Wine Science, School of Agriculture Food and Wine, Waite Campus, The University of Adelaide, Adelaide, SA, Australia.
Clare StirzakerEpigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, 2010, NSW, Australia.
Susan J ClarkEpigenetics Research Laboratory, Genomics and Epigenetics Division, Garvan Institute of Medical Research, 384 Victoria St, Darlinghurst, Sydney, 2010, NSW, Australia. s.clark@garvan.org.au.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

backgroundIn recent years the Illumina HumanMethylation450 (HM450) BeadChip has provided a user-friendly platform to profile DNA methylation in human samples. However, HM450 lacked coverage of distal regulatory elements. Illumina have now released the MethylationEPIC (EPIC) BeadChip, with new content specifically designed to target these regions. We have used HM450 and whole-genome bisulphite sequencing (WGBS) to perform a critical evaluation of the new EPIC array platform.

resultsEPIC covers over 850,000 CpG sites, including >90 % of the CpGs from the HM450 and an additional 413,743 CpGs. Even though the additional probes improve the coverage of regulatory elements, including 58 % of FANTOM5 enhancers, only 7 % distal and 27 % proximal ENCODE regulatory elements are represented. Detailed comparisons of regulatory elements from EPIC and WGBS show that a single EPIC probe is not always informative for those distal regulatory elements showing variable methylation across the region. However, overall data from the EPIC array at single loci are highly reproducible across technical and biological replicates and demonstrate high correlation with HM450 and WGBS data. We show that the HM450 and EPIC arrays distinguish differentially methylated probes, but the absolute agreement depends on the threshold set for each platform. Finally, we provide an annotated list of probes whose signal could be affected by cross-hybridisation or underlying genetic variation.

conclusionThe EPIC array is a significant improvement over the HM450 array, with increased genome coverage of regulatory regions and high reproducibility and reliability, providing a valuable tool for high-throughput human methylome analyses from diverse clinical samples.

Indexed as

Genome, HumanCpG IslandsDNA MethylationEnhancer Elements, GeneticHigh-Throughput Nucleotide SequencingHumansOligonucleotide Array Sequence AnalysisSequence Analysis, DNADNA methylationEnhancersEPICHM450MicroarrayValidationWhole-genome bisulphite sequencing (WGBS)

Identifiers

PMID27717381
PMCPMC5055731

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Registered trials

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.