Trial reportNeuro-oncology2013
Phase 2 study of dose-intense temozolomide in recurrent glioblastoma.
Trial report in Neuro-oncology, 2013. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers, 4 of them syntheses that pooled 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.
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.
Who cites it
54 citing papers in PubMed, 4 syntheses or guidelines pooled it, 92 citations in OpenAlex.
- Objective response rate targets for recurrent glioblastoma clinical trials based on the historic association between objective response rate and median overall survival.Neuro-oncology · 2023Pooled it
- Congress of Neurological Surgeons systematic review and evidence-based guidelines update on the role of cytotoxic chemotherapy and other cytotoxic therapies in the management of progressive glioblastoma in adults.Journal of neuro-oncology · 2022Guideline
- The efficacy and safety of various dose-dense regimens of temozolomide for recurrent high-grade glioma: a systematic review with meta-analysis.Journal of neuro-oncology · 2015Pooled it
- Incorporation of biomarkers in phase II studies of recurrent glioblastoma.Tumour biology : the journal of the International Society for Oncodevelopmental Biology and Medicine · 2015Pooled it
- Continuous dose-intense temozolomide and cisplatin in recurrent glioblastoma patients.Medicine · 2017Trial
- Phase II trial of 7 days on/7 days off temozolmide for recurrent high-grade glioma.Neuro-oncology · 2014Trial
- Bevacizumab and fotemustine for recurrent glioblastoma: a phase II study of AINO (Italian Association of Neuro-Oncology).Journal of neuro-oncology · 2014Trial
- BUDS: Benchmark Uncertainty Design Selection for Two-Stage Single-Arm Phase II Trials.medRxiv : the preprint server for health sciences · 2026Article
- Review
- A retrospective analysis of survival prognostic factors and risk stratification in recurrent glioblastoma.Annals of medicine · 2025Article
- Glioblastoma in adults: A Society for Neuro-Oncology (SNO) and European Society of Neuro-Oncology (EANO) consensus review on current management and future directions.Neuro-oncology · 2025Review
- Prophylactic cerebral irradiation sensitizes relapsed sensitive small cell lung cancer to temozolomide: A retrospective cohort study.Oncology letters · 2025Article
- Article
- Article
- Study protocol of the GLOW study: maximising treatment options for recurrent glioblastoma patients by whole genome sequencing-based diagnostics-a prospective multicenter cohort study.BMC medical genomics · 2022Article
- The Next Frontier in Health Disparities-A Closer Look at Exploring Sex Differences in Glioma Data and Omics Analysis, from Bench to Bedside and Back.Biomolecules · 2022Review
- Recurrent Glioblastoma Treatment: State of the Art and Future Perspectives in the Precision Medicine Era.Biomedicines · 2022Review
- Valganciclovir as Add-on to Second-Line Therapy in Patients with Recurrent Glioblastoma.Cancers · 2022Article
- Mesenchymal Transformation: The Rosetta Stone of Glioblastoma Pathogenesis and Therapy Resistance.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2020Review
- Tumor Treating Fields in the Management of Patients with Malignant Gliomas.Current treatment options in oncology · 2020Review
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
21 authors at 10 institutions in 1 country.
Funding
Abstract
backgroundAmong patients with glioblastoma (GBM) who progress on standard temozolomide, the optimal therapy is unknown. Resistance to temozolomide is partially mediated by O(6)-methylguanine-DNA methyltransferase (MGMT). Because MGMT may be depleted by prolonged temozolomide administration, dose-intense schedules may overcome resistance.
methodsThis was a multicenter, phase 2, single-arm study of temozolomide (75-100 mg/m(2)/day) for 21 days of each 28-day cycle. Patients had GBM in first recurrence after standard therapy. The primary end point was 6-month progression-free survival (PFS6).
resultsFifty-eight participants were accrued, 3 of whom were ineligible for analysis; one withdrew before response assessment. There were 33 men (61%), with a median age of 57 years (range, 25-79 years) and a median Karnofsky performance score of 90 (range, 60-100). Of 47 patients with MGMT methylation results, 36 (65%) had methylated tumors. There were 7 (13%) partial responses, and PFS6 was only 11%. Response and PFS did not depend on MGMT status; MSH2, MLH1, or ERCC1 expression; the number of prior temozolomide cycles; or the time off temozolomide. Treatment was well tolerated, with limited grade 3 neutropenia (n = 2) or thrombocytopenia (n = 2).
conclusionsDose-intense temozolomide on this schedule is safe in recurrent GBM. However, efficacy is marginal and predictive biomarkers are needed.
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Registered trials
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.