Evidence map›Paper›PMID 23616120›Full record

ArticleScience translational medicine2013

Rapamycin prevents seizures after depletion of STRADA in a rare neurodevelopmental disorder.

Whitney E Parker, Ksenia A Orlova, William H Parker, Jacqueline F Birnbaum, Vera P Krymskaya, Dmitry A Goncharov, Marianna Baybis, Jelte Helfferich, Kei Okochi, Kevin A Strauss and 1 more

Open access · greenAbstract read
In one paragraph

Article in Science translational medicine, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 68 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
68citing papers in PubMed, 1 pooled it
5.9field-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

68 citing papers in PubMed, 1 synthesis or guideline pooled it, 115 citations in OpenAlex.

  1. Pooled it
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  7. Deficiency ofZoological research · 2026
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  16. Seizure reduction in TSC2-mutant mouse model by an mTOR catalytic inhibitor.Annals of clinical and translational neurology · 2023
    Article
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  18. Review
  19. Article
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8 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

11 authors at 2 institutions in 1 country.

Whitney E ParkerPenn Epilepsy Center and Department of Neurology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, PA 19104, USA.
Ksenia A Orlova
William H Parker
Jacqueline F Birnbaum
Vera P Krymskaya
Dmitry A Goncharov
Marianna Baybis
Jelte Helfferich
Kei Okochi
Kevin A Strauss
Peter B Crino
University of Pennsylvania · USClinic for Special Children · US

Funding

PREDOCTORAL TRAINING PROGRAM IN GENETICST32GM008216 · NIGMS · UNIVERSITY OF PENNSYLVANIA · PI EPSTEIN, DOUGLAS J · 1987 to 2023
$8.3M
TSC signaling and pulmonary LAMR01HL114085 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI KRYMSKAYA, VERA P · 2012 to 2015
$1.9M
Role of folliculin (FLCN) in lung cell survivalR01HL110551 · NHLBI · UNIVERSITY OF PENNSYLVANIA · PI KRYMSKAYA, VERA P · 2012 to 2015
$1.8M
The Role of STRADalpha in Neuronal Migration and Brain DevelopmentF31NS078845 · NINDS · UNIVERSITY OF PENNSYLVANIA · PI PARKER, WHITNEY ERIN · 2012 to 2012
$35k
NHLBI NIH HHS R01 HL110551NHLBI NIH HHS R01 HL114085NIGMS NIH HHS T32 GM008216NINDS NIH HHS 1F31NS078845-01NINDS NIH HHS F31 NS078845NINDS NIH HHS NS045022
6 · The paper itself

Abstract

A rare neurodevelopmental disorder in the Old Order Mennonite population called PMSE (polyhydramnios, megalencephaly, and symptomatic epilepsy syndrome; also called Pretzel syndrome) is characterized by infantile-onset epilepsy, neurocognitive delay, craniofacial dysmorphism, and histopathological evidence of heterotopic neurons in subcortical white matter and subependymal regions. PMSE is caused by a homozygous deletion of exons 9 to 13 of the LYK5/STRADA gene, which encodes the pseudokinase STRADA, an upstream inhibitor of mammalian target of rapamycin complex 1 (mTORC1). We show that disrupted pathfinding in migrating mouse neural progenitor cells in vitro caused by STRADA depletion is prevented by mTORC1 inhibition with rapamycin or inhibition of its downstream effector p70 S6 kinase (p70S6K) with the drug PF-4708671 (p70S6Ki). We demonstrate that rapamycin can rescue aberrant cortical lamination and heterotopia associated with STRADA depletion in the mouse cerebral cortex. Constitutive mTORC1 signaling and a migration defect observed in fibroblasts from patients with PMSE were also prevented by mTORC1 inhibition. On the basis of these preclinical findings, we treated five PMSE patients with sirolimus (rapamycin) without complication and observed a reduction in seizure frequency and an improvement in receptive language. Our findings demonstrate a mechanistic link between STRADA loss and mTORC1 hyperactivity in PMSE, and suggest that mTORC1 inhibition may be a potential treatment for PMSE as well as other mTOR-associated neurodevelopmental disorders.

Indexed as

AnimalsBlotting, WesternCell MovementCells, CulturedCentral Nervous System DiseasesCytarabineFemaleHumansImidazolesImmunohistochemistryMechanistic Target of Rapamycin Complex 1MiceMultiprotein ComplexesPiperazinesPregnancySeizuresCytarabineImidazolesMechanistic Target of Rapamycin Complex 1Multiprotein ComplexesPF-4708671PiperazinesSirolimusTOR Serine-Threonine Kinases

Identifiers

PMID23616120
PMCPMC3720125
OpenAlexW2113803769

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.