Evidence map›Paper›PMID 41681960›Full record

ArticleCancers2026

Validation of Preoperative Neoadjuvant Bevacizumab Therapy for Newly Diagnosed Glioblastoma via Comparative Analyses with Propensity Score Matching.

Yohei Yamamoto, Akihiko Teshigawara, Ryota Tamura, Jun Takei, Yukina Morimoto, Kyoichi Tomoto, Yasuharu Akasaki, Yuzuru Hasegawa, Yuichi Murayama, Keisuke Miyake and 2 more

Abstract read
In one paragraph

Article in Cancers, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

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

1 citing paper in PubMed.

  1. 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

12 authors.

Yohei YamamotoDepartment of Neurosurgery, The Jikei University School of Medicine, Kashiwa Hospital, Chiba 277-8657, Japan.ORCID 0009-0008-1930-481X
Akihiko TeshigawaraDepartment of Neurosurgery, The Jikei University School of Medicine, Kashiwa Hospital, Chiba 277-8657, Japan.
Ryota TamuraDepartment of Neurosurgery, Keio University School of Medicine, Tokyo 160-8582, Japan.
Jun TakeiDepartment of Neurosurgery, The Jikei University School of Medicine, Tokyo 105-8471, Japan.ORCID 0000-0003-3879-9252
Yukina MorimotoDepartment of Neurosurgery, Keio University School of Medicine, Tokyo 160-8582, Japan.
Kyoichi TomotoDepartment of Neurosurgery, The Jikei University School of Medicine, Kashiwa Hospital, Chiba 277-8657, Japan.ORCID 0000-0002-7500-3850
Yasuharu AkasakiDepartment of Neurosurgery, The Jikei University School of Medicine, Tokyo 105-8471, Japan.ORCID 0000-0001-8015-084X
Yuzuru HasegawaDepartment of Neurosurgery, The Jikei University School of Medicine, Kashiwa Hospital, Chiba 277-8657, Japan.
Yuichi MurayamaDepartment of Neurosurgery, The Jikei University School of Medicine, Tokyo 105-8471, Japan.
Keisuke MiyakeDepartment of Neurosurgery, Kagawa University Graduate School of Medicine, Kagawa 761-0793, Japan.ORCID 0000-0002-7611-6486
Hikaru SasakiDepartment of Neurosurgery, Keio University School of Medicine, Tokyo 160-8582, Japan.
Toshihide TanakaDepartment of Neurosurgery, The Jikei University School of Medicine, Kashiwa Hospital, Chiba 277-8657, Japan.ORCID 0000-0002-6474-6317

Funding

the Ministry of Education, Culture, Sports, Science and Technology and the Japan Society for Promotion of Science (KAKENHI) 21K09161 and 25K12326
6 · The paper itself

Abstract

BACKGROUND/

objectivesThe role of preoperative neoadjuvant bevacizumab (neoBev) in newly diagnosed glioblastoma (GB) remains controversial. We evaluated its impact on perioperative and survival outcomes and explored imaging-based associations with prognosis.

methodsWe retrospectively analyzed 33 patients with newly diagnosed GB who received preoperative neoBev (10 mg/kg; surgery performed 21-30 days later). A matched control cohort of 33 patients treated with standard chemoradiotherapy was selected using propensity score matching. Changes in Karnofsky Performance Status (KPS), extent of resection, and volumetric alterations on gadolinium-enhanced T1-weighted MRI (T1Gd) and FLAIR were assessed. Progression-free survival (PFS) and overall survival (OS) were compared.

resultsAll patients had GB (31 IDH-wild-type, 2 IDH-mutant). Median KPS improved after neoBev (71 to 83), while no improvement was observed in controls. After matching, median PFS and OS did not differ between the neoBev and control groups (7.4 vs. 8.6 months and 13.4 vs. 13.8 months, respectively). Exploratory analyses in the neoBev cohort showed that greater T1Gd volume reduction was associated with improved PFS and OS, whereas FLAIR changes were not.

conclusionsPreoperative neoBev did not improve survival compared with standard chemoradiotherapy. However, it was associated with improved functional status, and exploratory imaging findings suggested associations between early radiographic response and outcome. NeoBev should not be used routinely but may have a contextual role in selected patients with perioperative challenges.

Indexed as

angiogenesisexpanding perifocal edemaglioblastomaneoadjuvant bevacizumaboverall survival

Identifiers

PMID41681960
PMCPMC12897004

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.