Evidence map›Paper›PMID 33664825›Full record

ArticleOncology letters2021

Cognitive function of children and adolescent survivors of acute lymphoblastic leukemia: A meta-analysis.

Kalliopi Mavrea, Vasiliki Efthymiou, Katerina Katsibardi, Konstantinos Tsarouhas, Christina Kanaka-Gantenbein, Demetrios A Spandidos, George Chrousos, Antonis Kattamis, Flora Bacopoulou

Abstract read
In one paragraph

Article in Oncology letters, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed, 1 pooled it
–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

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

  1. "Chemobrain" in childhood cancer survivors-the impact on social, academic, and daily living skills: a qualitative systematic review.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2023
    Pooled it
  2. Treatment-Related Changes in Cerebrospinal Fluid Markers of Oxidative Stress and Neurodegeneration during Therapy for Childhood Acute Lymphoblastic Leukemia.Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology · 2025
    Trial
  3. Trial
  4. Article
  5. Article
  6. Article
  7. Novel Therapeutic Approaches in Pediatric Acute Lymphoblastic Leukemia.International journal of molecular sciences · 2025
    Review
  8. Article
  9. Article
  10. Article
  11. Review
  12. Article
  13. Feasibility of serial neurocognitive assessment using Cogstate during and after therapy for childhood leukemia.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2023
    Article
  14. Article
  15. Review
  16. Role ofOncology letters · 2021
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  17. 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

9 authors.

Kalliopi MavreaClinic for Assessment of Adolescent Learning Difficulties, Center for Adolescent Medicine and UNESCO Chair on Adolescent Health Care, First Department of Pediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens 11527, Greece.
Vasiliki EfthymiouUniversity Research Institute of Maternal and Child Health and Precision Medicine, and UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens 11527, Greece.
Katerina KatsibardiPediatric Hematology-Oncology Unit, First Department of Pediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens 11527, Greece.
Konstantinos TsarouhasDepartment of Cardiology, University Hospital of Larissa, Larissa 41110, Greece.
Christina Kanaka-GantenbeinClinic for Assessment of Adolescent Learning Difficulties, Center for Adolescent Medicine and UNESCO Chair on Adolescent Health Care, First Department of Pediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens 11527, Greece.
Demetrios A SpandidosLaboratory of Clinical Virology, School of Medicine, University of Crete, Heraklion 71409, Greece.
George ChrousosUniversity Research Institute of Maternal and Child Health and Precision Medicine, and UNESCO Chair on Adolescent Health Care, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens 11527, Greece.
Antonis KattamisPediatric Hematology-Oncology Unit, First Department of Pediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens 11527, Greece.
Flora BacopoulouClinic for Assessment of Adolescent Learning Difficulties, Center for Adolescent Medicine and UNESCO Chair on Adolescent Health Care, First Department of Pediatrics, National and Kapodistrian University of Athens, Aghia Sophia Children's Hospital, Athens 11527, Greece.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Pediatric cancer and its treatment may have an impact on the neurocognitive functions of childhood cancer survivors (CCS). The aim of the present meta-analysis was to compare the intelligence quotient (IQ) scores between CCS of acute lymphoblastic leukemia (ALL) and controls. A comprehensive electronic search identified original research articles that reported scores of the Wechsler Intelligence Scale (WISC; WISC-III, WISC-IV and WISC-R) for children and adolescents, aged 6-16 years at evaluation, survivors of ALL and healthy controls. The included CCS had completed anticancer treatment and were in remission at the time of assessment. A total of 16 studies were included in the meta-analysis, out of 128 extracted studies, and involved a total of 1,676 children and adolescents: 991 CCS (ALL) and 685 healthy controls. Among the studies, a random effects model revealed a moderate estimate of effect size [standardized mean difference (SMD), -0.78; 95% CI, -1.05 to -0.50], indicating that the WISC scores for total IQ were significantly lower in the CCS than in the controls. The mean total IQ range was 85.2-107.2 in the CCS and 88.4-114.1 in the controls. The difference in the mean total IQ between controls and CCS ranged from -13.8 to 20.6. As regards the WISC scores for verbal IQ, 11 studies were included. A random effects model revealed a moderate estimate of effect size (SMD, -0.71; 95% CI, -1.05 to -0.38), indicating that the WISC scores for verbal IQ were significantly lower in the CCS than in the controls. Among the 9 studies that had available data for performance IQ scores, a fixed effect model revealed a moderate estimate of effect size (SMD, -0.80; 95% CI, -1.09 to -0.52), indicating that the WISC scores for performance IQ were significantly lower in the CCS than in the controls. As the survival rates of children and adolescents with ALL are steadily increasing, regular, lifelong follow-up for neurocognitive late effects is imperative in order to improve their education and employment prospects and overall, their quality of life.

Indexed as

acute lymphoblastic leukemiaadolescentscancerchemotherapychildrencognitiveeducationintelligenceIQlearning difficultiesradiotherapysurvivorsWISC

Identifiers

PMID33664825
PMCPMC7882890

What OpenQuestion holds

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Registered trials

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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.