Evidence map›Paper›PMID 31251794›Full record

ArticlePloS one2019

The insulin-like growth factor 2 gene in mammals: Organizational complexity within a conserved locus.

Kabita Baral, Peter Rotwein

Open access · goldAbstract read
In one paragraph

Article in PloS one, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
2.5field-weighted citation impact, top 10% 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

15 citing papers in PubMed, 23 citations in OpenAlex.

  1. IGF-mediated glucose signalling is retained in adult naked mole-rats.Journal of comparative physiology. B, Biochemical, systemic, and environmental physiology · 2026
    Article
  2. Article
  3. The Molecular Biology of Placental Transport of Calcium to the Human Foetus.International journal of molecular sciences · 2025
    Review
  4. Review
  5. Review
  6. Review
  7. Review
  8. Cells · 2022
    Review
  9. Review
  10. Review
  11. Article
  12. Article
  13. Review
  14. Regulation of gene expression by growth hormone.Molecular and cellular endocrinology · 2020
    Review
  15. Review
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

2 authors at 2 institutions in 1 country.

Kabita BaralGraduate School, College of Science, University of Texas at El Paso, El Paso, Texas.
Peter RotweinDepartment of Molecular and Translational Medicine, Paul L. Foster School of Medicine, Texas Tech Health University Health Sciences Center, El Paso, Texas.ORCID 0000-0002-9505-1817
Texas Tech University Health Sciences Center · USThe University of Texas at El Paso · US

Funding

INSULINLIKE GROWTH FACTORS AND MUSCLE DIFFERENTIATIONR01DK042748 · NIDDK · WASHINGTON UNIVERSITY · PI ROTWEIN, PETER S · 1991 to 2017
$5.6M
NIDDK NIH HHS R01 DK042748
6 · The paper itself

Abstract

The secreted protein, insulin-like growth factor 2 (IGF2), plays a central role in fetal and prenatal growth and development, and is regulated at the genetic level by parental imprinting, being expressed predominantly from the paternally derived chromosome in mice and humans. Here, IGF2/Igf2 and its locus has been examined in 19 mammals from 13 orders spanning ~166 million years of evolutionary development. By using human or mouse DNA segments as queries in genome analyses, and by assessing gene expression using RNA-sequencing libraries, more complexity was identified within IGF2/Igf2 than was annotated previously. Multiple potential 5' non-coding exons were mapped in most mammals and are presumably linked to distinct IGF2/Igf2 promoters, as shown for several species by interrogating RNA-sequencing libraries. DNA similarity was highest in IGF2/Igf2 coding exons; yet, even though the mature IGF2 protein was conserved, versions of 67 or 70 residues are produced secondary to species-specific maintenance of alternative RNA splicing at a variable intron-exon junction. Adjacent H19 was more divergent than IGF2/Igf2, as expected in a gene for a noncoding RNA, and was identified in only 10/19 species. These results show that common features, including those defining IGF2/Igf2 coding and several non-coding exons, were likely present at the onset of the mammalian radiation, but that others, such as a putative imprinting control region 5' to H19 and potential enhancer elements 3' to H19, diversified with speciation. This study also demonstrates that careful analysis of genomic and gene expression repositories can provide new insights into gene structure and regulation.

Indexed as

Genetic LociPromoter Regions, GeneticAnimalsDatabases, GeneticExonsGenomeHumansInsulin-Like Growth Factor IIMammalsMiceInsulin-Like Growth Factor II

Identifiers

PMID31251794
PMCPMC6599137
OpenAlexW2955231306

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.