Evidence map›Paper›PMID 32664146›Full record

ArticleMedicine2020

Effect of valproic acid on overall survival in patients with high-grade gliomas undergoing temozolomide: A nationwide population-based cohort study in Taiwan.

Yu-Jen Kuo, Yao-Hsu Yang, I-Yun Lee, Pau-Chung Chen, Jen-Tsung Yang, Ting-Chung Wang, Martin Hsiu-Chu Lin, Wei-Hsun Yang, Chun-Yu Cheng, Kuo-Tai Chen and 2 more

Open access · goldAbstract readMulticenter Study
In one paragraph

Article in Medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
1.3field-weighted citation impact, top 20% 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

15 citing papers in PubMed, 16 citations in OpenAlex.

  1. Review
  2. Article
  3. Article
  4. Review
  5. Cenobamate reduces epileptiform activity in theFrontiers in neuroscience · 2025
    Article
  6. Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. Review
  13. Review
  14. Article
  15. 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

12 authors at 3 institutions in 2 countries.

Yu-Jen KuoDepartment of Neurosurgery.
Yao-Hsu YangDepartment of Traditional Chinese Medicine, Chang Gung Memorial Hospital.
I-Yun LeeDepartment of Traditional Chinese Medicine, Chang Gung Memorial Hospital.
Pau-Chung ChenOccupational Medicine and Industrial Hygiene, National Taiwan University College of Public Health, Taipei.
Jen-Tsung YangDepartment of Neurosurgery.
Ting-Chung WangDepartment of Neurosurgery.
Martin Hsiu-Chu LinDepartment of Neurosurgery.
Wei-Hsun YangDepartment of Neurosurgery.
Chun-Yu ChengDepartment of Neurosurgery.
Kuo-Tai ChenDepartment of Neurosurgery.
Wei-Chao HuangDepartment of Neurosurgery.
Ming-Hsueh LeeDepartment of Neurosurgery.
Memorial Hospital of South Bend · USChang Gung University · TWNational Taiwan University · TW

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

High-grade gliomas (HGGs) are a rapidly progressive and highly recurrent group of primary brain tumors. Despite aggressive surgical resection with chemoradiotherapy, prognoses remained poor. Valproic acid (VPA), a histone deacetylase inhibitor has shown the potential to inhibit glioma cell growth in vitro through several diverse mechanisms. However clinical studies regarding the effect of VPA on HGGs are limited. This study aimed to investigate whether using VPA in patients with HGGs under temozolomide (TMZ) would lead to a better overall survival (OS).We used the Taiwan National Health Insurance Research database to conduct this population-based cohort study. A total of 2379 patients with HGGs under TMZ treatment were included and were further classified into VPA (n = 1212, VPA ≥ 84 defined daily dose [DDD]) and non-VPA (n = 1167, VPA < 84 DDD) groups. Each patient was followed from 1998 to 2013 or until death. A Cox proportional hazard regression was performed to evaluate the effect of VPA and OS.The VPA group had a longer mean OS time compared with the non-VPA group (OS: 50.3 ± 41.0 vs 42.0 ± 37.2 months, P < .001). In patients between 18 and 40 years old, the difference is most significant (OS: 70.5 ± 48.7 vs 55.1 ± 46.0, P = .001). The adjusted hazard ratio is 0.81 (95% confidence interval, 0.72-0.91) for the VPA group relative to the non-VPA group.VPA at over 84 DDD improved OS in HGGs TMZ treatment.

Indexed as

Neoplasm StagingAdolescentAdultAgedAntineoplastic Agents, AlkylatingBrain NeoplasmsEnzyme InhibitorsFemaleFollow-Up StudiesGliomaHumansMaleMiddle AgedPopulation SurveillancePrognosisRetrospective StudiesAntineoplastic Agents, AlkylatingEnzyme InhibitorsTemozolomideValproic Acid

Identifiers

PMID32664146
PMCPMC7360242
OpenAlexW3042007803

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC
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.