Evidence map›Paper›PMID 29258453›Full record

ArticleBMC cancer2017

Evaluation of plasma brain-derived neurotrophic factor levels and self-perceived cognitive impairment post-chemotherapy: a longitudinal study.

Terence Ng, Ying Yun Lee, Jung-Woo Chae, Angie Hui Ling Yeo, Maung Shwe, Yan Xiang Gan, Raymond C H Ng, Pat Pak Yan Chu, Chiea Chuen Khor, Han Kiat Ho and 1 more

Open access · goldAbstract read
In one paragraph

Article in BMC cancer, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 26 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
26citing papers in PubMed, 1 pooled it
2.0field-weighted citation impact, top 12% 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

26 citing papers in PubMed, 1 synthesis or guideline pooled it, 39 citations in OpenAlex.

  1. Pooled it
  2. Trial
  3. Randomized double-masked controlled trial of cognitive training in breast cancer survivors: a preliminary study.Supportive care in cancer : official journal of the Multinational Association of Supportive Care in Cancer · 2022
    Trial
  4. Trial
  5. Article
  6. Review
  7. Observational
  8. Article
  9. Article
  10. Article
  11. BDNF and its signaling in cancer.Journal of cancer research and clinical oncology · 2023
    Review
  12. BDNF Augmentation Using Riluzole Reverses Doxorubicin-Induced Decline in Cognitive Function and Neurogenesis.Neurotherapeutics : the journal of the American Society for Experimental NeuroTherapeutics · 2023
    Article
  13. Article
  14. Article
  15. Article
  16. Mechanisms of Chemotherapy-Induced Neurotoxicity.Frontiers in pharmacology · 2022
    Review
  17. Article
  18. Article
  19. Article
  20. 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.

Terence NgDepartment of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, 18 Science Drive 4, Level 3, Singapore, 117543, Singapore.
Ying Yun LeeDepartment of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, 18 Science Drive 4, Level 3, Singapore, 117543, Singapore.
Jung-Woo ChaeDepartment of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, 18 Science Drive 4, Level 3, Singapore, 117543, Singapore.
Angie Hui Ling YeoDepartment of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, 18 Science Drive 4, Level 3, Singapore, 117543, Singapore.
Maung ShweDepartment of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, 18 Science Drive 4, Level 3, Singapore, 117543, Singapore.
Yan Xiang GanDepartment of Pharmacy, National Cancer Centre Singapore, Singapore, Singapore.
Raymond C H NgDuke-NUS Medical School Singapore, Singapore, Singapore.
Pat Pak Yan ChuSingapore Cord Blood Bank, K.K. Women's and Children's Hospital, Singapore, Singapore.
Chiea Chuen KhorGenome Institute of Singapore, Singapore, Singapore.
Han Kiat HoDepartment of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, 18 Science Drive 4, Level 3, Singapore, 117543, Singapore.
Alexandre ChanDepartment of Pharmacy, Faculty of Science, National University of Singapore, Block S4A, 18 Science Drive 4, Level 3, Singapore, 117543, Singapore. phaac@nus.edu.sg.
National University of Singapore · SGNational Cancer Centre Singapore · SGGenome Institute of Singapore · SGKK Women's and Children's Hospital · SG

Funding

National Medical Research Council NMRC/CIRG/1386/2014
6 · The paper itself

Abstract

backgroundPreliminary evidence suggests that changes in plasma brain-derived neurotrophic factor (BDNF) levels may contribute to the occurrence of chemotherapy-associated cognitive impairment (CACI), and a previous study suggested that carriers of the BDNF Met homozygous genotype are protected from CACI.

methodsThis multicenter, prospective cohort study involved chemotherapy-receiving early-stage breast cancer (ESBC) patients. Self-perceived cognitive function was longitudinally assessed using the validated FACT-Cog (ver. 3) across three time points: Prior to chemotherapy (T1), during chemotherapy (T2), and at the end of chemotherapy (T3). Plasma BDNF levels were quantified using enzyme-linked immunosorbent assay. Genotyping was performed using Sanger Sequencing.

resultsA total of 51 chemotherapy-receiving ESBC patients (mean age: 52.6 ± 9.5 years) were recruited, and 11 patients (21.6%) reported subjective cognitive impairment post-chemotherapy. Overall, there was a reduction in median plasma BDNF levels over time (T1: 5423.0 pg/ml; T2: 5313.6 pg/ml; T3: 4050.3 pg/ml; p < 0.01). After adjusting for confounding factors, longitudinal analysis revealed that BDNF levels were associated with self-reported concentration deficit (p = 0.032). Carriers of Val/Val (p = 0.011) and Val/Met (p = 0.003) BDNF genotypes demonstrated a significant reduction in plasma BDNF levels over time; however, plasma BDNF levels were similar across all time points among Met homozygous carriers (p = 0.107).

conclusionThere was a statistically significant change in BDNF levels post-chemotherapy in ESBC patients, and plasma BDNF levels were associated with self-perceived concentration deficit in patients receiving chemotherapy.

Indexed as

Genetic Predisposition to DiseaseAdultAgedBrain-Derived Neurotrophic FactorBreast NeoplasmsCognitive DysfunctionFemaleGenetic Association StudiesGenotypeHumansMaleMiddle AgedNeoplasm StagingPolymorphism, Single NucleotideBDNF protein, humanBrain-Derived Neurotrophic FactorBDNFBreast cancerCognitionGeneticsrs6265

Identifiers

PMID29258453
PMCPMC5735945
OpenAlexW2778644188

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.