Evidence map›Paper›PMID 27234373›Full record

ArticleHuman genetics2016

De novo RRAGC mutation activates mTORC1 signaling in syndromic fetal dilated cardiomyopathy.

Pamela A Long, Michael T Zimmermann, Maengjo Kim, Jared M Evans, Xiaolei Xu, Timothy M Olson

Abstract read
In one paragraph

Article in Human genetics, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 23 papers.

0numbers the graph read from it
0cells of the map it votes in
23citing papers in PubMed
2.9field-weighted citation impact, top 8% 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

23 citing papers in PubMed, 50 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Article
  6. Review
  7. Article
  8. Article
  9. Regulation of mTORC1 by the Rag GTPases.Biochemical Society transactions · 2023
    Review
  10. Review
  11. Article
  12. Article
  13. TFEB Overexpression, Not mTOR Inhibition, Ameliorates RagCInternational journal of molecular sciences · 2021
    Article
  14. The Roles of Post-Translational Modifications on mTOR Signaling.International journal of molecular sciences · 2021
    Review
  15. Analysis ofJournal of clinical medicine · 2020
    Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. 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 2 institutions in 1 country.

Pamela A LongMayo Graduate School, Molecular Pharmacology and Experimental Therapeutics Track, Mayo Clinic, Rochester, MN.
Michael T Zimmermann *Division of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN.
Maengjo Kim *Department of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN.
Jared M EvansDivision of Biomedical Statistics and Informatics, Department of Health Sciences Research, Mayo Clinic, Rochester, MN.
Xiaolei XuDepartment of Biochemistry and Molecular Biology, Mayo Clinic, Rochester, MN.
Timothy M OlsonCardiovascular Genetics Research Laboratory, Mayo Clinic, Rochester MN.
Mayo Clinic in Arizona · USMayo Clinic in Florida · US

Funding

Epicardial remodeling in cardiomyopathy and cardiac agingR01HL107304 · NHLBI · MAYO CLINIC ROCHESTER · PI Xiaolei Xu · 2011 to 2026
$6.6M
Mapping Novel Disease Genes for Dilated CardiomyopathyR01HL071225 · NHLBI · MAYO CLINIC ROCHESTER · PI OLSON, TIMOTHY MARK · 2002 to 2015
$3.6M
Predoctoral Training Program in Molecular PharmacologyT32GM072474 · NIGMS · MAYO CLINIC ROCHESTER · PI KARNITZ, LARRY M · 2005 to 2020
$2.4M
NHLBI NIH HHS R01 HL071225NHLBI NIH HHS R01 HL107304NIGMS NIH HHS T32 GM072474
6 · The paper itself

Abstract

Idiopathic dilated cardiomyopathy (DCM) is a heritable, genetically heterogeneous disorder with variable age-dependent penetrance. We sought to identify the genetic underpinnings of syndromic, sporadic DCM in a newborn female diagnosed in utero. Postnatal evaluation revealed ventricular dilation and systolic dysfunction, bilateral cataracts, and mild facial dysmorphisms. Comprehensive metabolic and genetic testing, including chromosomal microarray, mitochondrial DNA and targeted RASopathy gene sequencing, and clinical whole exome sequencing for known cardiomyopathy genes was non-diagnostic. Following exclusion of asymptomatic DCM in the parents, trio-based whole exome sequencing was carried out on a research basis, filtering for rare, predicted deleterious de novo and recessive variants. An unreported de novo S75Y mutation was discovered in RRAGC, encoding Ras-related GTP binding C, an essential GTPase in nutrient-activated mechanistic target of rapamycin complex 1 (mTORC1) signaling. In silico protein modeling and molecular dynamics simulation predicted the mutation to disrupt ligand interactions and increase the GDP-bound state. Overexpression of RagC(S75Y) rendered AD293 cells partially insensitive to amino acid deprivation, resulting in increased mTORC1 signaling compared to wild-type RagC. These findings implicate mTORC1 dysregulation through a gain-of-function mutation in RagC as a novel molecular basis for syndromic forms of pediatric heart failure, and expand genotype-phenotype correlation in RASopathy-related syndromes.

Indexed as

Genetic HeterogeneityAge FactorsCardiomyopathy, DilatedExomeFemaleGene Expression RegulationGenetic Association StudiesGenetic LinkageGenotypeHumansInfantInfant, NewbornMaleMechanistic Target of Rapamycin Complex 1Monomeric GTP-Binding ProteinsMultiprotein ComplexesMechanistic Target of Rapamycin Complex 1Monomeric GTP-Binding ProteinsMultiprotein ComplexesRRAGC protein, humanTOR Serine-Threonine Kinases

Identifiers

PMID27234373
PMCPMC4947566
OpenAlexW2396346284

What OpenQuestion holds

Textmetadata
LicenceTDM
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.