Evidence map›Paper›PMID 34480430›Full record

ArticleCancer medicine2021

Hearing loss and intellectual outcome in children treated for embryonal brain tumors: Implications for young children treated with radiation sparing approaches.

Iska Moxon-Emre, Christine Dahl, Vijay Ramaswamy, Ute Bartels, Uri Tabori, Annie Huang, Sharon L Cushing, Vicky Papaioannou, Normand Laperriere, Eric Bouffet and 1 more

Open access · goldAbstract read
In one paragraph

Article in Cancer medicine, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
11citing papers in PubMed, 1 pooled it
1.9field-weighted citation impact, top 13% 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

11 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Article
  3. Sensorineural hearing loss after pediatric cranial radiotherapy: a multicenter analysis of dosimetric and clinical risk factors.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2026
    Article
  4. Approaches to Reduce Toxicity in Pediatric Brain Tumors.Current oncology (Toronto, Ont.) · 2025
    Review
  5. Article
  6. Review
  7. Article
  8. The Burden of Surviving Childhood Medulloblastoma: A Population-Based, Matched Cohort Study in Ontario, Canada.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2023
    Article
  9. Review
  10. Article
  11. 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

11 authors at 4 institutions in 1 country.

Iska Moxon-EmreProgram in Neuroscience and Mental Health, The Hospital for Sick Children, Toronto, ON, Canada.
Christine DahlDivision of Hematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.
Vijay RamaswamyDivision of Hematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.
Ute BartelsDivision of Hematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.
Uri TaboriDivision of Hematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.
Annie HuangDivision of Hematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.
Sharon L CushingDepartment of Otolaryngology, The Hospital for Sick Children, Toronto, ON, Canada.
Vicky PapaioannouDepartment of Otolaryngology, The Hospital for Sick Children, Toronto, ON, Canada.
Normand LaperriereRadiation Oncology, Ontario Cancer Institute, Princess Margaret Hospital, Toronto, ON, Canada.
Eric BouffetDivision of Hematology/Oncology, The Hospital for Sick Children, Toronto, ON, Canada.
Donald J MabbottProgram in Neuroscience and Mental Health, The Hospital for Sick Children, Toronto, ON, Canada.ORCID 0000-0001-6161-5066
Hospital for Sick Children · CAUniversity of Toronto · CAOntario Institute for Cancer Research · CAPediatric Oncology Group · CA

Funding

CIHRMegan's WalkPaediatric Oncology Group of Ontario
6 · The paper itself

Abstract

purposeWe investigate the impact of severe sensorineural hearing loss (SNHL) and for the first time evaluate the effect of unilateral versus bilateral SNHL on intellectual outcome in a cohort of children with embryonal brain tumors treated with and without radiation.

methodsData were from 94 childhood survivors of posterior fossa (PF) embryonal brain tumors who were treated with either: (1) chemotherapy alone (n = 16, 7.11 [3.41] years, 11M/5F), (2) standard-dose craniospinal irradiation (CSI) and/or large boost volumes (n = 44, 13.05 [3.26] years, 29M/15F), or (3) reduced-dose CSI with a boost restricted to the tumor bed (n = 34, 11.07 [3.80] years, 19M/15F). We compared intellectual outcome between children who: (1) did and did not develop SNHL and (2) developed unilateral versus bilateral SNHL. A Chang grade of ≥2b that required the use of a hearing aid was considered severe SNHL. Comparisons were made overall and within each treatment group separately.

resultsPatients who developed SNHL had lower full scale IQ (p = 0.007), verbal comprehension (p = 0.003), and working memory (p = 0.02) than patients without SNHL. No differences were observed between patients who had unilateral versus bilateral SNHL (all p > 0.05). Patients treated with chemotherapy alone who developed SNHL had lower mean working memory (p = 0.03) than patients who did not develop SNHL. Among patients treated with CSI, no IQ indices differed between those with and without SNHL (all p > 0.05).

conclusionsChildren treated for embryonal brain tumors who develop severe SNHL have lower intellectual outcome than patients with preserved hearing: this association is especially profound in young children treated with radiation sparing approaches. We also demonstrate that intellectual outcome is similarly impaired in patients who develop unilateral versus bilateral SNHL. These findings suggest that early intervention to preserve hearing is critical.

Indexed as

Brain NeoplasmsNeoplasms, Germ Cell and EmbryonalAdolescentAntineoplastic AgentsCancer SurvivorsChemotherapy-Related Cognitive ImpairmentChildChild, PreschoolCognitive DysfunctionCohort StudiesComprehensionCraniospinal IrradiationFemaleHearing Loss, BilateralHearing Loss, SensorineuralHearing Loss, UnilateralAntineoplastic AgentschemotherapyEmbryonal brain tumorsintellectual outcomepediatric cancersensorineural hearing loss

Identifiers

PMID34480430
PMCPMC8525144
OpenAlexW3196362671

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.