Evidence map›Paper›PMID 30746636›Full record

ArticleBreast cancer research and treatment2019

The effect of chemotherapy on subjective cognitive function in younger early-stage breast cancer survivors treated with chemotherapy compared to older patients.

M L Gregorowitsch, A Ghedri, D A Young-Afat, R Bijlsma, I O Baas, C van Schaik-van de Mheen, M J Agterof, E Göker, D Ten Bokkel Huinink, H J G D van den Bongard and 2 more

Abstract read
In one paragraph

Article in Breast cancer research and treatment, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

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

  1. Pooled it
  2. Article
  3. Article
  4. Article
  5. Long-term health-related quality of life among adolescent and young adult breast cancer survivors.Quality of life research : an international journal of quality of life aspects of treatment, care and rehabilitation · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Aging and CNS Myeloid Cell Depletion Attenuate Breast Cancer Brain Metastasis.Clinical cancer research : an official journal of the American Association for Cancer Research · 2021
    Article
  10. Article
  11. Article
  12. Article
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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

12 authors.

M L GregorowitschDepartment of Radiation Oncology, University Medical Center (UMC) Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands. m.l.gregorowitsch@umcutrecht.nl.ORCID http://orcid.org/0000-0002-8762-1605
A GhedriUniversity of Utrecht, Utrecht, The Netherlands.
D A Young-AfatDepartment of Radiation Oncology, University Medical Center (UMC) Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
R BijlsmaDepartment of Medical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands.
I O BaasDepartment of Medical Oncology, University Medical Center Utrecht, Utrecht, The Netherlands.
C van Schaik-van de MheenDepartment of Medical Oncology, Meander Medical Center, Amersfoort, The Netherlands.
M J AgterofDepartment of Medical Oncology, St. Antonius, Nieuwegein, The Netherlands.
E GökerDepartment of Medical Oncology, Alexander Monro Clinics, Bilthoven, The Netherlands.
D Ten Bokkel HuininkDepartment of Medical Oncology, Diakonessenhuis, Utrecht, The Netherlands.
H J G D van den BongardDepartment of Radiation Oncology, University Medical Center (UMC) Utrecht, Heidelberglaan 100, 3584 CX, Utrecht, The Netherlands.
H M VerkooijenUniversity of Utrecht, Utrecht, The Netherlands.
UMBRELLA study group

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

purposeTo evaluate the impact of chemotherapy on subjective cognitive functioning according to age in a large cohort of breast cancer patients.

methodsWithin the UMBRELLA cohort, 715 patients with early-stage primary invasive breast cancer (T1-3N0-1M0) were selected. Subjective cognitive function was assessed by means of the EORTC QLQ-C30 up to 24 months and compared between patients treated with and without chemotherapy, for three different age strata (355 patients < 55 years, 240 patients aged 55-65 years, and 120 patients > 65 years). Differences between chemotherapy and non-chemotherapy patients by age at different time points were assessed by linear mixed-effect models correcting for age, tumor stage, educational level, endocrine therapy, anxiety, and depression.

resultsIn total, 979 patients from the UMBRELLA cohort were included, of which 715 (73%) responded to baseline and at least one follow-up questionnaire. Questionnaire response rates ranged between 92 and 70%. The proportion of patients treated with chemotherapy decreased with age: 64% (n = 277) in patients < 55 years, 45% (n = 107) in patients 55-65 years, and 23% (n = 27) in patients > 65 years. Chemotherapy was associated with reduced subjective cognitive functioning. The impact of chemotherapy on subjective cognitive function was most pronounced in patients < 55 years, followed by those between 55 and 65 years. In the youngest age groups, patients treated with chemotherapy had significantly lower cognitive functioning up to 24 months. In women over 65 years, subjective cognitive functioning was comparable between patients treated with and without chemotherapy.

conclusionThis study confirms that chemotherapy is associated with impaired subjective self-reported cognitive functioning in breast cancer patients, and the effect persists at least up to 2 years after diagnosis. The impact of chemotherapy on self-reported cognitive functioning in the first 24 months is most pronounced in younger patients, especially those under 55 years of age.

Indexed as

Age FactorsCancer SurvivorsAdultAgedAged, 80 and overBreast NeoplasmsChemotherapy, AdjuvantCognitionFemaleHumansMastectomyMastectomy, SegmentalMiddle AgedNeoplasm StagingQuality of LifeSelf ReportBreast cancerChemotherapyCognitive functionPatient-reported outcome

Identifiers

PMID30746636
PMCPMC6533221

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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.