Evidence map›Paper›PMID 26898832›Full record

Trial reportScientific reports2016

Memantine Improves Attentional Processes in Fragile X-Associated Tremor/Ataxia Syndrome: Electrophysiological Evidence from a Randomized Controlled Trial.

Jin-Chen Yang, Annette Rodriguez, Ashley Royston, Yu-Qiong Niu, Merve Avar, Ryan Brill, Christa Simon, Jim Grigsby, Randi J Hagerman, John M Olichney

Open access · goldAbstract readRandomized Controlled Trial
In one paragraph

Trial report in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 20 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
20citing papers in PubMed, 1 pooled it
3.9field-weighted citation impact, top 7% 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

20 citing papers in PubMed, 1 synthesis or guideline pooled it, 36 citations in OpenAlex.

  1. Guideline
  2. Trial
  3. Does transcranial direct current stimulation enhance cognitive performance in Parkinson's disease mild cognitive impairment? An event-related potentials and neuropsychological assessment study.Neurological sciences : official journal of the Italian Neurological Society and of the Italian Society of Clinical Neurophysiology · 2022
    Trial
  4. Review
  5. Review
  6. Review
  7. Article
  8. Premutation Females with preFXTAS.International journal of molecular sciences · 2025
    Article
  9. Review
  10. Article
  11. Fragile X Premutation: Medications, Therapy and Lifestyle Advice.Pharmacogenomics and personalized medicine · 2021
    Review
  12. Review
  13. Article
  14. Review
  15. Article
  16. Review
  17. Review
  18. Article
  19. Review
  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

10 authors at 3 institutions in 2 countries.

Jin-Chen YangCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
Annette RodriguezCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
Ashley RoystonCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
Yu-Qiong NiuCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
Merve AvarCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
Ryan BrillCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
Christa SimonCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
Jim GrigsbyDepartment of Psychology, Department of Medicine, University of Colorado Denver, Denver, CO, 80217 USA.
Randi J HagermanMedical Investigation of Neurodevelopmental Disorders (M.I.N.D.) Institute, University of California Davis, School of Medicine, Sacramento, CA, 95817 USA.
John M OlichneyCenter for Mind and Brain, University of California Davis, Davis, CA, 95618 USA.
University of California, Davis · USUniversity of Colorado Denver · USUniversity of Vienna · AT

Funding

UC Davis Alzheimer's Disease Core CenterP30AG010129 · NIA · UNIVERSITY OF CALIFORNIA DAVIS · PI DECARLI, CHARLES · 1991 to 2020
$28.3M
Characterization and Treatment of CNS Abnormalities in Premutation Carriers (4 ofRL1AG032115 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI HAGERMAN, RANDI J. · 2007 to 2011
$5.8M
Longitudinal Cognitive ERP studies: Advancement for AD Clinical TrialsR01AG048252 · NIA · UNIVERSITY OF CALIFORNIA AT DAVIS · PI BREWER, JAMES B, OLICHNEY, JOHN M · 2015 to 2020
$4.2M
Memory in Aging, Mild Cognitive impairment and ADR01AG018442 · NIA · VETERANS MEDICAL RESEARCH FDN/SAN DIEGO · PI OLICHNEY, JOHN M · 2001 to 2005
$1.3M
NIA NIH HHS P30 AG010129NIA NIH HHS R01 AG018442NIA NIH HHS R01 AG048252NIA NIH HHS R01 AG18442NIA NIH HHS RL1 AG032115NIA NIH HHS RL1AG032115
6 · The paper itself

Abstract

Progressive cognitive deficits are common in patients with fragile X-associated tremor/ataxia syndrome (FXTAS), with no targeted treatment yet established. In this substudy of the first randomized controlled trial for FXTAS, we examined the effects of NMDA antagonist memantine on attention and working memory. Data were analyzed for patients (24 in each arm) who completed both the primary memantine trial and two EEG recordings (at baseline and follow-up) using an auditory "oddball" task. Results demonstrated significantly improved attention/working memory performance after one year only for the memantine group. The event-related potential P2 amplitude elicited by non-targets was significantly enhanced in the treated group, indicating memantine-associated improvement in attentional processes at the stimulus identification/discrimination level. P2 amplitude increase was positively correlated with improvement on the behavioral measure of attention/working memory during target detection. Analysis also revealed that memantine treatment normalized the P2 habituation effect at the follow-up visit. These findings indicate that memantine may benefit attentional processes that represent fundamental components of executive function/dysfunction, thought to comprise the core cognitive deficit in FXTAS. The results provide evidence of target engagement of memantine, as well as therapeutically relevant information that could further the development of specific cognitive or disease-modifying therapies for FXTAS.

Indexed as

AgedAtaxiaAttentionCognitive DysfunctionDrug Administration ScheduleElectroencephalographyEvoked PotentialsExcitatory Amino Acid AntagonistsExecutive FunctionFemaleFragile X SyndromeHumansMaleMemantineMemory, Short-TermMiddle AgedExcitatory Amino Acid AntagonistsMemantine

Identifiers

PMID26898832
PMCPMC4761982
OpenAlexW2466729523

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.