Evidence map›Paper›PMID 26005849›Full record

ArticleNature neuroscience2015

The human epilepsy mutation GABRG2(Q390X) causes chronic subunit accumulation and neurodegeneration.

Jing-Qiong Kang, Wangzhen Shen, Chengwen Zhou, Dong Xu, Robert L Macdonald

Open access · greenAbstract read
In one paragraph

Article in Nature neuroscience, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 78 papers.

0numbers the graph read from it
0cells of the map it votes in
78citing papers in PubMed
7.7field-weighted citation impact, top 3% 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

78 citing papers in PubMed, 98 citations in OpenAlex.

  1. GABASynapse (New York, N.Y.) · 2026
    Review
  2. Review
  3. Article
  4. Review
  5. 4-Phenylbutyrate Rescue inbioRxiv : the preprint server for biology · 2026
    Article
  6. Article
  7. Review
  8. Article
  9. Article
  10. Proteostasis regulation of GABABiomedicine & pharmacotherapy = Biomedecine & pharmacotherapie · 2025
    Review
  11. Article
  12. Review
  13. Review
  14. Article
  15. Review
  16. Article
  17. Established and emerging GABAFrontiers in pharmacology · 2024
    Review
  18. γ-Aminobutyric acid transporter and GABABrain communications · 2024
    Article
  19. Article
  20. Biomolecules · 2023
    Article

18 more citing papers are in PubMed but not listed here.

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

5 authors at 2 institutions in 1 country.

Jing-Qiong KangDepartment of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Wangzhen ShenDepartment of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Chengwen ZhouDepartment of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Dong XuDepartment of Computer Science and Christopher S. Bond Life Sciences Center, University of Missouri, Columbia, Missouri, USA.
Robert L Macdonald1] Department of Neurology, Vanderbilt University Medical Center, Nashville, Tennessee, USA. [2] Department of Molecular Physiology and Biophysics, Vanderbilt University Medical Center, Nashville, Tennessee, USA. [3] Department of Pharmacology, Vanderbilt University Medical Center, Nashville, Tennessee, USA.
Vanderbilt University Medical Center · USUniversity of Missouri · US

Funding

THREE-TIERED PREVENTION MODEL TO BETTER SERVE ALL STUDENP30HD015052 · NICHD · VANDERBILT UNIVERSITY · PI DYKENS, ELISABETH MAY · 1985 to 2014
$18.6M
Research Project: Sensory and Multisensory Contributions to AutismU54HD083211 · NICHD · VANDERBILT UNIVERSITY MEDICAL CENTER · PI CUTTING, LAURIE E · 2015 to 2019
$7.1M
RECOMBINANT/NATIVE GABAA RECEPTORSR01NS033300 · NINDS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI MACDONALD, ROBERT LOUDEN · 1995 to 2016
$5.0M
Pathophysiology and treatment of GABRG2 nonsense epilepsy mutationsR01NS051590 · NINDS · VANDERBILT UNIVERSITY · PI MACDONALD, ROBERT LOUDEN · 2007 to 2014
$2.7M
Altered synapse formation and function in a novel Dravet syndrome mouse modelR01NS082635 · NINDS · VANDERBILT UNIVERSITY MEDICAL CENTER · PI KANG, JING-QIONG · 2013 to 2017
$1.7M
Development of MUFOLD for Building High-Accuracy Protein Structure ModelsR01GM100701 · NIGMS · UNIVERSITY OF MISSOURI-COLUMBIA · PI XU, DONG · 2012 to 2016
$1.4M
NICHD NIH HHS P30 HD015052NICHD NIH HHS P30HD15052NICHD NIH HHS U54 HD083211NIGMS NIH HHS R01 GM100701NINDS NIH HHS R01 NS033300NINDS NIH HHS R01 NS051590NINDS NIH HHS R01 NS082635NINDS NIH HHS R01 NS51590
6 · The paper itself

Abstract

Genetic epilepsy and neurodegenerative diseases are two common neurological disorders that are conventionally viewed as being unrelated. A subset of patients with severe genetic epilepsies who have impaired development and often go on to die of their disease respond poorly to anticonvulsant drug therapy, suggesting a need for new therapeutic targets. Previously, we reported that multiple GABAA receptor epilepsy mutations result in protein misfolding and abnormal receptor trafficking. We have now developed a model of a severe human genetic epileptic encephalopathy, the Gabrg2(+/Q390X) knock-in mouse. We found that, in addition to impairing inhibitory neurotransmission, mutant GABAA receptor γ2(Q390X) subunits accumulated and aggregated intracellularly, activated caspase 3 and caused widespread, age-dependent neurodegeneration. These findings suggest that the fundamental protein metabolism and cellular consequences of the epilepsy-associated mutant γ2(Q390X) ion channel subunit are not fundamentally different from those associated with neurodegeneration. Our results have far-reaching relevance for the identification of conserved pathological cascades and mechanism-based therapies that are shared between genetic epilepsies and neurodegenerative diseases.

Indexed as

AdultAnimalsDisease Models, AnimalEpilepsyFemaleHumansMiceMice, Inbred C57BLMice, TransgenicMutationNeurodegenerative DiseasesReceptors, GABA-AYoung AdultGABRG2 protein, humanGabrg2 protein, mouseReceptors, GABA-A

Identifiers

PMID26005849
PMCPMC4482801
OpenAlexW1538241732

What OpenQuestion holds

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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.