Evidence map›Paper›PMID 20427744›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2010

Targeted deletion of the Nesp55 DMR defines another Gnas imprinting control region and provides a mouse model of autosomal dominant PHP-Ib.

Leopold F Fröhlich, Maria Mrakovcic, Ralf Steinborn, Ung-Il Chung, Murat Bastepe, Harald Jüppner

Open access · greenAbstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2010. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 37 papers.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed
4.5field-weighted citation impact, top 5% 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

37 citing papers in PubMed, 64 citations in OpenAlex.

  1. Analysis of Multiple Families With Single Individuals Affected by Pseudohypoparathyroidism Type Ib (PHP1B) Reveals Only One Novel Maternally Inherited GNAS Deletion.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2016
    Trial
  2. Imprinting and skeletal disorders: lessons from pseudohypoparathyroidism and related disorders.Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2025
    Review
  3. Bidirectional disruption ofProceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  4. Article
  5. Article
  6. Review
  7. Article
  8. Frontiers in endocrinology · 2023
    Review
  9. Article
  10. Article
  11. Article
  12. Genetic Studies on Mammalian DNA Methyltransferases.Advances in experimental medicine and biology · 2022
    Article
  13. Article
  14. Molecular Definition of Pseudohypoparathyroidism Variants.The Journal of clinical endocrinology and metabolism · 2021
    Review
  15. A Novel GNAS Duplication Associated With Loss-of-Methylation Restricted to Exon A/B Causes Pseudohypoparathyroidism Type Ib (PHP1B).Journal of bone and mineral research : the official journal of the American Society for Bone and Mineral Research · 2021
    Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. GNAS Spectrum of Disorders.Current osteoporosis reports · 2015
    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

6 authors at 3 institutions in 3 countries.

Leopold F FröhlichEndocrine Unit, Department of Medicine, Massachusetts General Hospital and Harvard Medical School, Boston, MA 02114, USA.
Maria Mrakovcic
Ralf Steinborn
Ung-Il Chung
Murat Bastepe
Harald Jüppner
Harvard University · USMassachusetts General Hospital · USUniversity of Veterinary Medicine Vienna · AT

Funding

ROLE OF DIETARY CONSTITUENTS ON GENE EXPRESSION IN INTESTINAL EPITHELIUMP30DK040561 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI CHRISTOPHER P DUGGAN · 1994 to 2026
$31.6M
PTH/PTHRP RECEPTOR DEFECTS IN PSEUDOHYPOPARATHYROIDISMR01DK046718 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI JUEPPNER, HARALD W. · 1993 to 2024
$6.0M
XLas Relative to Gsa in Bone and Mineral Ion MetabolismR01DK073911 · NIDDK · MASSACHUSETTS GENERAL HOSPITAL · PI BASTEPE, MURAT · 2007 to 2020
$4.9M
NIDDK NIH HHS P30 DK040561NIDDK NIH HHS R01 DK046718NIDDK NIH HHS R01 DK073911NIDDK NIH HHS R01DK073911NIDDK NIH HHS R01DK46718
6 · The paper itself

Abstract

Approximately 100 genes undergo genomic imprinting. Mutations in fewer than 10 imprinted genetic loci, including GNAS, are associated with complex human diseases that differ phenotypically based on the parent transmitting the mutation. Besides the ubiquitously expressed Gsalpha, which is of broad biological importance, GNAS gives rise to an antisense transcript and to several Gsalpha variants that are transcribed from the nonmethylated parental allele. We previously identified two almost identical GNAS microdeletions extending from exon NESP55 to antisense (AS) exon 3 (delNESP55/delAS3-4). When inherited maternally, both deletions are associated with erasure of all maternal GNAS methylation imprints and autosomal-dominant pseudohypoparathyroidism type Ib, a disorder characterized by parathyroid hormone-resistant hypocalcemia and hyperphosphatemia. As for other imprinting disorders, the mechanisms resulting in abnormal GNAS methylation are largely unknown, in part because of a paucity of suitable animal models. We now showed in mice that deletion of the region equivalent to delNESP55/delAS3-4 on the paternal allele (DeltaNesp55(p)) leads to healthy animals without Gnas methylation changes. In contrast, mice carrying the deletion on the maternal allele (DeltaNesp55(m)) showed loss of all maternal Gnas methylation imprints, leading in kidney to increased 1A transcription and decreased Gsalpha mRNA levels, and to associated hypocalcemia, hyperphosphatemia, and secondary hyperparathyroidism. Besides representing a murine autosomal-dominant pseudohypoparathyroidism type Ib model and one of only few animal models for imprinted human disorders, our findings suggest that the Nesp55 differentially methylated region is an additional principal imprinting control region, which directs Gnas methylation and thereby affects expression of all maternal Gnas-derived transcripts.

Indexed as

AnimalsChromograninsDNA MethylationGene DeletionGene Expression RegulationGenomic ImprintingGTP-Binding Protein alpha Subunits, GsHumansInheritance PatternsMicePseudohypoparathyroidismSequence DeletionChromograninsGnas protein, mouseGTP-Binding Protein alpha Subunits, Gs

Identifiers

PMID20427744
PMCPMC2889123
OpenAlexW2003074882

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.