Evidence map›Paper›PMID 32055939›Full record

ArticleInternational journal of legal medicine2020

Inter-laboratory adaption of age estimation models by DNA methylation analysis-problems and solutions.

Manuel Pfeifer, Thomas Bajanowski, Janine Helmus, Micaela Poetsch

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In one paragraph

Article in International journal of legal medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 2 pooled it
1.5field-weighted citation impact, top 18% 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

10 citing papers in PubMed, 2 syntheses or guidelines pooled it, 25 citations in OpenAlex.

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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

4 authors at 1 institution in 1 country.

Manuel PfeiferInstitute of Legal Medicine, University Hospital Essen, Hufelandstr 55, 45122, Essen, Germany.
Thomas BajanowskiInstitute of Legal Medicine, University Hospital Essen, Hufelandstr 55, 45122, Essen, Germany.
Janine HelmusInstitute of Legal Medicine, University Hospital Essen, Hufelandstr 55, 45122, Essen, Germany.
Micaela PoetschInstitute of Legal Medicine, University Hospital Essen, Hufelandstr 55, 45122, Essen, Germany. micaela.poetsch@uk-essen.de.ORCID http://orcid.org/0000-0003-1364-6487
Essen University Hospital · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In recent years, a lot of age prediction models based on different CpG motives in different cell types were published determining the biological age of a person by DNA methylation. For a general employment of this technique, maybe even as a routine method, the cross-laboratory application of such models has to be examined. Therefore, we tested two different published age prediction models for blood and mouth swab samples with regard to prediction accuracy (Bekaert et al Epigenetics 10:922-930, 2015a; Bekaert et al Forensic Sci Int Genet Suppl Ser 5:e144-e145, 2015b). Both models are based on CpG sites of four genes (ASPA, EDARADD, PDE4-C, and ELOVL2), but with a different combination of CpGs for the two tissue types. A mean absolute difference (MAD) between chronological and predicted age of 9.84 and 8.32 years for blood and buccal swab models could be demonstrated, respectively, which is significantly worse than the published data, probably due to higher DNA methylation variances in some CpGs. By retraining both prediction models, the prediction accuracy could be improved to a MAD of 5.55 and 4.65 years for the renewed blood and buccal swab model, respectively. This study demonstrates the usefulness of effective DNA standards to normalize DNA methylation data for better comparison of study results.

Indexed as

CpG IslandsDNA MethylationGenetic MarkersAgingAmidohydrolasesBlood Chemical AnalysisCyclic Nucleotide Phosphodiesterases, Type 4Edar-Associated Death Domain ProteinFatty Acid ElongasesForensic GeneticsHumansLaboratoriesPredictive Value of TestsSalivaAmidohydrolasesaspartoacylaseCyclic Nucleotide Phosphodiesterases, Type 4EDARADD protein, humanEdar-Associated Death Domain ProteinELOVL2 protein, humanFatty Acid ElongasesGenetic MarkersPDE4A protein, humanCpG makerDNA methylationEstimation of biological agePyrosequencing

Identifiers

PMID32055939
OpenAlexW3006065776

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Registered trials

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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.