Evidence map›Paper›PMID 33480039›Full record

ArticleAnnals of neurology2021

Multisite Study of Evoked Potentials in Rett Syndrome.

Joni N Saby, Timothy A Benke, Sarika U Peters, Shannon M Standridge, Junko Matsuzaki, Clare Cutri-French, Lindsay C Swanson, David N Lieberman, Alexandra P Key, Alan K Percy and 4 more

Registry-linked trialOpen access · greenAbstract readMulticenter Study
In one paragraph

Article in Annals of neurology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05932589 (Characterization of Translatable Neurophysiological Biomarkers to Enhance Therapeutic Development in Rett Syndrome), which is not on this map. Cited by 23 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
23citing 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.

NCT05932589 recruitingnot on this mapstarted 2023, after this paper: background citation

Characterization of Translatable Neurophysiological Biomarkers to Enhance Therapeutic Development in Rett Syndrome

TypeobservationalSponsorChildren's Hospital of PhiladelphiaRan2023 to 2029Enrolled202ConditionsRett Syndrome, RTT, Rett Syndrome, AtypicalArmsEEG and Auditory and Visual Evoked Potentials (AEP and VEP), Clinical assessment
3 · Its place in the literature

Who cites it

23 citing papers in PubMed, 1 synthesis or guideline pooled it, 44 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Article
  4. Visual Recovery Reflects Cortical MeCP2 Sensitivity in Rett Syndrome.Annals of clinical and translational neurology · 2026
    Article
  5. Article
  6. Article
  7. Article
  8. Article
  9. Article
  10. Article
  11. Review
  12. Rett syndrome: The Natural History Study journey.Annals of the Child Neurology Society · 2024
    Review
  13. Article
  14. Article
  15. Review
  16. Article
  17. Article
  18. Article
  19. Review
  20. Article
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

14 authors at 7 institutions in 1 country.

Joni N SabyDivision of Radiology Research, Children's Hospital of Philadelphia, Philadelphia, PA.
Timothy A BenkeDepartment of Pediatrics, Neurology, Pharmacology and Otolaryngology, University of Colorado School of Medicine and Children's Hospital Colorado, Aurora, CO.
Sarika U PetersDepartment of Pediatrics, Vanderbilt University Medical Center, Vanderbilt Kennedy Center, Nashville, TN.
Shannon M StandridgeCincinnati Children's Hospital Medical Center, Division of Neurology and University of Cincinnati College of Medicine, Cincinnati, OH.
Junko MatsuzakiDivision of Radiology Research, Children's Hospital of Philadelphia, Philadelphia, PA.
Clare Cutri-FrenchDivision of Child Neurology, Children's Hospital of Philadelphia, Departments of Neurology and Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA.ORCID 0000-0001-9774-7706
Lindsay C SwansonDepartment of Neurology, Boston Children's Hospital, Boston, MA.
David N LiebermanDepartment of Neurology, Boston Children's Hospital, Boston, MA.
Alexandra P KeyDepartment of Hearing and Speech Sciences, Vanderbilt University Medical Center, Vanderbilt Kennedy Center, Nashville, TN.
Alan K PercyDepartment of Pediatrics, University of Alabama at Birmingham, Birmingham, AL.
Jeffrey L NeulDepartment of Pediatrics, Vanderbilt University Medical Center, Vanderbilt Kennedy Center, Nashville, TN.ORCID 0000-0002-5628-5872
Charles A NelsonLaboratories of Cognitive Neuroscience, Boston Children's Hospital, Boston, MA.
Timothy P L RobertsDivision of Radiology Research, Children's Hospital of Philadelphia, Philadelphia, PA.
Eric D MarshDivision of Child Neurology, Children's Hospital of Philadelphia, Departments of Neurology and Pediatrics, Perelman School of Medicine at the University of Pennsylvania, Philadelphia, PA.ORCID 0000-0003-3264-0902
Children's Hospital of Philadelphia · USBoston Children's Hospital · USVanderbilt University Medical Center · USChildren's Hospital Colorado · USCincinnati Children's Hospital Medical Center · USJohn F. Kennedy Center for the Performing Arts · USUniversity of Alabama at Birmingham · US

Funding

TRANSGENIC MOUSE MODELS OF MENTAL RETARDATIONP30HD026979 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI ROBERTS, TIMOTHY P · 1990 to 2015
$15.3M
Training and Career Development ComponentU54HD061222 · NICHD · UNIVERSITY OF ALABAMA AT BIRMINGHAM · PI PERCY, ALAN KENNETH · 2009 to 2019
$12.4M
Overall: Eunice Kennedy Shriver Intellectual and Developmental Disabilities Research Center at VanderbiltP50HD103537 · NICHD · VANDERBILT UNIVERSITY MEDICAL CENTER · PI Lea K Davis · 2020 to 2026
$10.3M
The Intellectual and Developmental Disabilities Research Center (IDDRC) at CHOP/PennP50HD105354 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI ERIC D MARSH, ROBERT Thomas SCHULTZ · 2021 to 2026
$9.2M
The Intellectual and Developmental Disabilities Research Center at CHOP/PennU54HD086984 · NICHD · CHILDREN'S HOSP OF PHILADELPHIA · PI ABEL, EDWIN TED G. · 2016 to 2020
$6.3M
Neural Signatures of Tactile Processing and Sensorimotor GABA in Development and Autism Spectrum DisorderK01MH118378 · NIMH · CHILDREN'S HOSP OF PHILADELPHIA · PI SABY, JONI N. · 2019 to 2022
$496k
NICHD NIH HHS P30 HD026979NICHD NIH HHS P50 HD103537NICHD NIH HHS P50 HD105354NICHD NIH HHS U54 HD061222NICHD NIH HHS U54 HD086984NIMH NIH HHS K01 MH118378
6 · The paper itself

Abstract

objectiveThe aim of the current study was to evaluate the utility of evoked potentials as a biomarker of cortical function in Rett syndrome (RTT). As a number of disease-modifying therapeutics are currently under development, there is a pressing need for biomarkers to objectively and precisely assess the effectiveness of these treatments.

methodYearly visual evoked potentials (VEPs) and auditory evoked potentials (AEPs) were acquired from individuals with RTT, aged 2 to 37 years, and control participants across 5 sites as part of the Rett Syndrome and Related Disorders Natural History Study. Baseline and year 1 data, when available, were analyzed and the repeatability of the results was tested. Two syndrome-specific measures from the Natural History Study were used for evaluating the clinical relevance of the VEP and AEP parameters.

resultsAt the baseline study, group level comparisons revealed reduced VEP and AEP amplitude in RTT compared to control participants. Further analyses within the RTT group indicated that this reduction was associated with RTT-related symptoms, with greater severity associated with lower VEP and AEP amplitude. In participants with RTT, VEP and AEP amplitude was also negatively associated with age. Year 1 follow-up data analyses yielded similar findings and evidence of repeatability of EPs at the individual level.

interpretationThe present findings indicate the promise of evoked potentials (EPs) as an objective measure of disease severity in individuals with RTT. Our multisite approach demonstrates potential research and clinical applications to provide unbiased assessment of disease staging, prognosis, and response to therapy. ANN NEUROL 2021;89:790-802.

Indexed as

Evoked PotentialsAdolescentAdultAgingBiomarkersCerebral CortexChildChild, PreschoolElectroencephalographyEvoked Potentials, AuditoryEvoked Potentials, VisualFemaleFollow-Up StudiesHumansMaleRett SyndromeBiomarkers

Identifiers

PMID33480039
PMCPMC8882338
OpenAlexW3121277133

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Registered trials

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.