Cited by 61Chromosomal and Genetic VariationsGenomics and Phylogenetic StudiesGenomic variations and chromosomal abnormalities

The DOI matches its Crossref record; 40 of the 40 references it cites were found in a registry or an index; none of the 28 sources its claims cite is checked for support yet.

The case for not masking away repetitive DNA

Open access
Slotkin, R. Keith·2018·Mobile DNA

Abstract

In the course of analyzing whole-genome data, it is common practice to mask or filter out repetitive regions of a genome, such as transposable elements and endogenous retroviruses, in order to focus only on genes and thus simplify the results. This Commentary is a plea from one member of the Mobile DNA community to all gene-centric researchers: please do not ignore the repetitive fraction of the genome . Please stop narrowing your findings by only analyzing a minority of the genome, and instead broaden your analyses to include the rich biology of repetitive and mobile DNA. In this article, I present four arguments supporting a case for retaining repetitive DNA in your genome-wide analysis.

Overview

AI snapshot

Written from the paper’s full text.

TL;DR

This Commentary argues that gene-centric researchers should stop masking or filtering repetitive DNA from genome-wide analyses, because transposable elements and endogenous retroviruses contribute to gene regulation, evolution, disease, and technology development. It presents four arguments for retaining repetitive DNA and notes that improved sequencing and mapping tools now make such analyses feasible.

Key findings

  • “Whole-genome” datasets are routinely restricted to the non-repetitive portion of the human genome, reported as 22–51% by RepeatMasker, leaving 78–49% of the genome unanalyzed in favor of simplified gene expression evaluation.
  • Repetitive and mobile DNA can regulate single genes and entire gene regulatory networks, act as developmental/tissue-stage-specific markers, produce long non-coding RNAs, sense cellular stress, contribute to centromere function, substitute as telomeres, and associate with several diseases.
  • The paper argues technology has advanced: Illumina SBS read lengths transitioned from 50 to 150 nucleotides, and PacBio/Nanopore long reads remove much mapping ambiguity; tools such as MELT, RetroSeq, EpiTEome, McClintock, T-lex, Clari-TE, and TEtoolkit/TEtranscripts can assay repetitive DNA.
  • Mobile DNA research has produced or inspired research tools including mutagenesis/gene tagging, transgenesis, gene trapping, ATAC-seq, tagmentation, and CRISPR-Cas genome editing.

Methods

  • This is a Commentary, not primary research; no experimental design, sample, dataset, or statistical analysis is reported.
  • The author presents four arguments supporting retention of repetitive DNA in genome-wide analyses and cites prior literature, tools, and examples rather than generating new data.

Limitations

  • The paper states it is a short Commentary and that “too many examples exist to fit into this short Commentary article.”
  • Evident from the text: it is a persuasive perspective from a Mobile DNA researcher, with no systematic literature review, no new empirical data, and no quantitative evaluation of masking practices.

Model-written summary. Check it against the paper before relying on it.

Integrity signals

Registry

Crossref · 10.1186/s13100-018-0120-9

Cites

40 of 40 references verified0 citation errors · 0 not checkable

Statistics

Nothing to recompute.

Verification

Claims the paper makes

16 No basis given · 14 Check pending · 7 Own interpretation · 3 Not checked yet · 2 No full text of the sources

Verify all 23 references — free account

Show all 24 claims

  • Probably not a substantial claim. 10
  • It may state two separate claims as one. 9
18 of 18

Citations

Cites

Cited by

Sorted by citations

See all 61

Metadata

Authors
Slotkin, R. K.
Affiliations
The Ohio State University (US)
Corresponding author
Slotkin, R. Keith
Venue
Mobile DNA
Published
2018-05-01
Volume
9
Issue
1
Pages
15-15
ISSN
1759-8753 (ISSN-L)
OpenAlex
W2805084391
Cited by
61
References
40
Citations by year
2026: 3 · 2025: 4 · 2024: 3 · 2023: 4 · 2022: 15 · 2021: 7 · 2020: 12 · 2019: 11 · 2018: 2
Type
journal article
Language
en
Open access
Locations
  • Mobile DNA (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, other-oa)
  • PubMed (publishedVersion)
  • PubMed Central (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
Funders
National Science Foundation (MCB-1252370, MCB-1608392, IOS-1340050)
Topics
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Chromosomal and Genetic Variations
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Genomics and Phylogenetic Studies
  • Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Genomic variations and chromosomal abnormalities
Keywords
repetitive DNA, transposable elements, endogenous retroviruses, genome-wide analysis, whole genome sequencing, non-coding genome

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

A language model drew the claims from the paper on 2026-11-11, under version 3 of the claim definition (model deepseek-v4.1-flash, prompt extract-v3).

A second model labelled each claim on 2026-11-11 (model jev-1.13-20260917, definition revision gold-guideline-v0.2).

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review