Evidence map›Paper›PMID 22500628›Full record

ArticleNeuron2012

Somatic activation of AKT3 causes hemispheric developmental brain malformations.

Annapurna Poduri, Gilad D Evrony, Xuyu Cai, Princess Christina Elhosary, Rameen Beroukhim, Maria K Lehtinen, L Benjamin Hills, Erin L Heinzen, Anthony Hill, R Sean Hill and 7 more

Open access · bronzeAbstract read
In one paragraph

Article in Neuron, 2012. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 264 papers, 2 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
264citing papers in PubMed, 2 pooled it
18.4field-weighted citation impact, top 1% 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

264 citing papers in PubMed, 2 syntheses or guidelines pooled it, 475 citations in OpenAlex.

  1. Pooled it
  2. Pooled it
  3. Article
  4. Ras-MAPK somatic variants in mesial temporal lobe epilepsy.Current opinion in genetics & development · 2026
    Review
  5. Review
  6. Article
  7. CRL4EMBO reports · 2026
    Article
  8. TDP-43: [GU]-ardian of the transcriptome.Molecular neurodegeneration · 2026
    Review
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Early death and neuronal abnormalities inbioRxiv : the preprint server for biology · 2025
    Article
  15. Article
  16. Article
  17. Article
  18. Review
  19. Article
  20. DNA polymerase β suppresses somatic indels at CpG dinucleotides in developing cortical neurons.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article

204 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

17 authors at 6 institutions in 1 country.

Annapurna PoduriDepartment of Neurology, Children's Hospital Boston, 300 Longwood Avenue, Boston, MA 02115, USA.
Gilad D Evrony
Xuyu Cai
Princess Christina Elhosary
Rameen Beroukhim
Maria K Lehtinen
L Benjamin Hills
Erin L Heinzen
Anthony Hill
R Sean Hill
Brenda J Barry
Blaise F D Bourgeois
James J Riviello
A James Barkovich
Peter M Black
Keith L Ligon
Christopher A Walsh
Boston Children's Hospital · USHoward Hughes Medical Institute · USBroad Institute · USBrigham and Women's Hospital · USDuke University · USUniversity of California, San Francisco · US

Funding

Medical Scientist Training ProgramT32GM007753 · NIGMS · HARVARD UNIVERSITY (MEDICAL SCHOOL) · PI WALENSKY, LOREN DAVID · 1985 to 2021
$50.0M
SYNAPTIC MECHANISMS IN HIPPOCAMPAL EPILEPTOGENESISP30HD018655 · NICHD · CHILDREN'S HOSPITAL BOSTON · PI POMEROY, SCOTT LOREN · 1985 to 2015
$26.2M
Cell Identity Determination In Human Brain: Somatic Mutation and Cell LineageR01NS032457 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI Alice Eunjung Lee, Christopher A. Walsh · 1995 to 2026
$12.7M
HUMAN EPILEPSY GENETICS--NEURONAL MIGRATION DISORDERSR01NS035129 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI WALSH, CHRISTOPHER A. · 1997 to 2023
$9.5M
Therapeutic Opportunities for Pediatric AstrocytomaP01CA142536 · NCI · DANA-FARBER CANCER INST · PI SEGAL, ROSALIND A. · 2011 to 2015
$7.9M
Somatic mutations in epilepsy: whole genome sequence analysis of single neuronsR01NS079277 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI WALSH, CHRISTOPHER A. · 2012 to 2015
$1.4M
Genetics of Familial Epilepsy SyndromesK23NS069784 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI PODURI, ANNAPURNA · 2010 to 2014
$901k
Olig function in CNS development and tumorigenesisK08NS047213 · NINDS · DANA-FARBER CANCER INST · PI LIGON, KEITH LLOYD · 2004 to 2008
$876k
Cerebrospinal fluid proteome mediated signaling in the developing CNSR00NS072192 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI LEHTINEN, MARIA · 2012 to 2014
$727k
Cerebrospinal fluid proteome mediated signaling in the developing CNSK99NS072192 · NINDS · BOSTON CHILDREN'S HOSPITAL · PI LEHTINEN, MARIA · 2010 to 2011
$180k
Howard Hughes Medical InstituteNCI NIH HHS P01 CA142536NICHD NIH HHS P30 HD018655NIGMS NIH HHS T32 GM007753NINDS NIH HHS K08 NS047213NINDS NIH HHS K23 NS069784NINDS NIH HHS K23NS069784NINDS NIH HHS K99/R00 NS072192NINDS NIH HHS R00 NS072192NINDS NIH HHS R01 NS032457NINDS NIH HHS R01 NS035129NINDS NIH HHS R01 NS079277NINDS NIH HHS R01 NS35129
6 · The paper itself

Abstract

Hemimegalencephaly (HMG) is a developmental brain disorder characterized by an enlarged, malformed cerebral hemisphere, typically causing epilepsy that requires surgical resection. We studied resected HMG tissue to test whether the condition might reflect somatic mutations affecting genes critical to brain development. We found that two out of eight HMG samples showed trisomy of chromosome 1q, which encompasses many genes, including AKT3, a gene known to regulate brain size. A third case showed a known activating mutation in AKT3 (c.49G→A, creating p.E17K) that was not present in the patient's blood cells. Remarkably, the E17K mutation in AKT3 is exactly paralogous to E17K mutations in AKT1 and AKT2 recently discovered in somatic overgrowth syndromes. We show that AKT3 is the most abundant AKT paralog in the brain during neurogenesis and that phosphorylated AKT is abundant in cortical progenitor cells. Our data suggest that somatic mutations limited to the brain could represent an important cause of complex neurogenetic disease.

Indexed as

CerebrumChromosomes, Human, Pair 1EpilepsyHumansMalformations of Cortical DevelopmentNeurogenesisProto-Oncogene Proteins c-aktTrisomyAKT3 protein, humanProto-Oncogene Proteins c-akt

Identifiers

PMID22500628
PMCPMC3460551
OpenAlexW2013482405

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.