Evidence map›Paper›PMID 42107784›Full record

Trial reportInternational journal of radiation oncology, biology, physics2026

Memantine for Prevention of Cognitive Late Effects in Children and Adolescents Receiving Radiation Therapy for Brain Tumors: A Randomized, Controlled, Pilot Trial.

Heather M Conklin, Raja B Khan, Jason M Ashford, Christina Owens, Andrea Simmons, Christina Bosley, Chia-Wei Hsu, Haitao Pan, Amar Gajjar, Thomas E Merchant

Abstract readRandomized Controlled Trial
In one paragraph

Trial report in International journal of radiation oncology, biology, physics, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing papers in PubMed
–field-weighted citation impact
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

3 citing papers in PubMed.

  1. Trial
  2. Review
  3. 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.

Heather M ConklinDepartment of Psychology and Biobehavioral Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee. Electronic address: heather.conklin@stjude.org.
Raja B KhanDivision of Neurology, St. Jude Children's Research Hospital, Memphis, Tennessee.
Jason M AshfordDepartment of Psychology and Biobehavioral Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee.
Christina OwensDepartment of Pharmacy and Pharmaceutical Sciences, St. Jude Children's Research Hospital, Memphis, Tennessee.
Andrea SimmonsCenter of Advanced Practice, St. Jude Children's Research Hospital, Memphis, Tennessee.
Christina BosleyDepartment of Surgical Services, St. Jude Children's Research Hospital, Memphis, Tennessee.
Chia-Wei HsuDepartment of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee.
Haitao PanDepartment of Biostatistics, St. Jude Children's Research Hospital, Memphis, Tennessee.
Amar GajjarDivision of Neuro-Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee.
Thomas E MerchantDepartment of Radiation Oncology, St. Jude Children's Research Hospital, Memphis, Tennessee.

Funding

Viral Vector Technology (VVTSR)P30CA021765 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI CHARLES ROBERTS · 1985 to 2026
$166.9M
Memantine for Prevention of Cognitive Late Effects in Pediatric Patients Receiving Cranial Radiation Therapy for Low Grade GliomaR21CA218625 · NCI · ST. JUDE CHILDREN'S RESEARCH HOSPITAL · PI CONKLIN, HEATHER M · 2017 to 2018
$312k
NCI NIH HHS P30 CA021765NCI NIH HHS R21 CA218625
6 · The paper itself

Abstract

purposeChildren receiving irradiation for brain tumors are at significant risk for cognitive deficits that notably impact quality of life. This is the first randomized, controlled investigation of the feasibility, acceptability, and preliminary efficacy of memantine (an N-methyl-D-aspartate receptor antagonist) for reducing cognitive late effects in children and adolescents undergoing radiation therapy. METHODS AND MATERIALS: In a randomized, double-blind, controlled, pilot trial, children and adolescents took memantine (20 mg/d) or placebo for 12 weeks. Adherence was assessed using pill counts, and side effects were monitored using a structured interview. At baseline, 6 weeks (end of radiation therapy), 12 weeks (end of medication), and 1 year, participants completed cognitive assessments.

resultsThirty patients (age, 11.93 ± 2.87 years; 47% male) were included; memantine (n = 16) and placebo (n = 14) groups did not differ in age, sex, race, socioeconomic status, or baseline intelligence quotient (P > .26). Study participation (71%) and medication adherence (88% completed 12 weeks; 97% of medication taken) were high. Side effects were minimal with no difference between memantine and placebo groups in increase in severity from baseline to any medication week (P > .23). At 12 weeks, effect sizes (ESs) indicate the memantine group had better processing speed (Cogstate Identification, ES = .61), academic fluency (Woodcock-Johnson IV Reading Fluency, ES = .45; Math Fluency, ES = .81), and fatigue (Pediatric Quality of Life Inventory [PedsQL] Multidimensional Fatigue Scale, ES = .72), with some benefits persisting 1 year post treatment (eg, Woodcock-Johnson IV Reading Fluency ES = .65; Math Fluency ES = .71).

conclusionsStudy findings from this randomized, controlled trial indicate memantine used as a neuroprotectant during irradiation for children and adolescents with brain tumors is feasible and acceptable, with preliminary evidence for better cognitive outcomes that requires validation in a larger trial.

Indexed as

Brain NeoplasmsCognition DisordersExcitatory Amino Acid AntagonistsMemantineAdolescentChildCognitionCognitive EnhancementCranial IrradiationDouble-Blind MethodFeasibility StudiesFemaleHumansMalePilot ProjectsQuality of LifeExcitatory Amino Acid AntagonistsMemantineReceptors, N-Methyl-D-Aspartate

Identifiers

PMID42107784
PMCPMC13189535

What OpenQuestion holds

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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.