Evidence map›Paper›PMID 31914038›Full record

Observational studyMedicine2020

Survival analysis of patients with glioblastoma treated by long-term administration of temozolomide.

Rencui Quan, Huaqing Zhang, Zihuang Li, Xianming Li

Abstract readObservational Study
In one paragraph

Observational study in Medicine, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing 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

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

  1. Pooled it
  2. Review
  3. Article
  4. Review
  5. Article
  6. Article
  7. Article
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  10. 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

4 authors.

Rencui QuanDepartment of Radiation Oncology, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital.
Huaqing ZhangDepartment of Endocrinology, Hospital of Southern University of Science and Technology, Shenzhen, China.
Zihuang LiDepartment of Radiation Oncology, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital.
Xianming LiDepartment of Radiation Oncology, The Second Clinical Medical College of Jinan University, Shenzhen People's Hospital.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

This analysis aimed to investigate whether the long-term administration of temozolomide (TMZ) claimed a survival advantage for patients with glioblastoma in China.A total of 75 patients with newly diagnosed glioblastoma at the Department of Radiation Oncology, Shenzhen People's Hospital between August 2008 and August 2016 were retrospectively evaluated during analysis. A propensity-matched analysis was performed to balance the basic characteristics of patients between compared groups. Kaplan-Meier method and Cox proportional hazards model were used to assess progression-free survival (PFS) and overall survival (OS) of patients receiving 6 adjuvant TMZ cycles compared with patients treated with more than 6 cycles.Twenty of 75 patients received more than 6 cycles of TMZ, and the other 55 patients were treated with a median of 6 cycles ranging from 1 to 6. The patients with long-term administration of TMZ had better OS (47.0 months, 95% CI 20.0-73.9 vs 20.6 months, 95% CI 17.9-23.2, P = .014) but not PFS (17.0 months, 95% CI 10.1-24.5 vs 14.2 months, 95% CI 11.8-16.6, P = .133). Balancing the clinical factors with a propensity-matched analysis also showed the significant advantage of prolonged TMZ application in terms of OS but not PFS.Prolonged administration of TMZ beyond 6 cycles did demonstrate survival benefits for patients with initially diagnosed glioblastoma.

Indexed as

AdolescentAdultAgedAntineoplastic Agents, AlkylatingBrain NeoplasmsChemotherapy, AdjuvantDrug Administration ScheduleFemaleGlioblastomaHumansKaplan-Meier EstimateMaleMiddle AgedNeoplasm GradingPropensity ScoreRetrospective StudiesAntineoplastic Agents, AlkylatingTemozolomide

Identifiers

PMID31914038
PMCPMC6959873

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.