Trial reportThe Lancet. Oncology2021
Adjuvant and concurrent temozolomide for 1p/19q non-co-deleted anaplastic glioma (CATNON; EORTC study 26053-22054): second interim analysis of a randomised, open-label, phase 3 study.
Trial report in The Lancet. Oncology, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 206 papers, 2 of them syntheses that pooled it.
What it found
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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
206 citing papers in PubMed, 2 syntheses or guidelines pooled it, 319 citations in OpenAlex.
- The IDH paradox: Meta-analysis of alkylating chemotherapy in IDH-wild type and -mutant lower grade gliomas.Neuro-oncology · 2024Pooled it
- [Gender-specific differences in the development of colorectal cancer in Lynch syndrome patients-A systematic review].Chirurgie (Heidelberg, Germany) · 2024Pooled it
- STELLAR: Phase III, Randomized, Open-Label Study of Eflornithine Plus Lomustine Versus Lomustine Alone in Patients With Recurrent Grade 3 Astrocytoma.Journal of clinical oncology : official journal of the American Society of Clinical Oncology · 2026Trial
- Trial
- Prospective phase II clinical trial of molecular glioblastoma (historical grade 2 and 3 IDH wildtype gliomas) preliminary novel exploratory analyses : Treatment intensification, margin reduction and epigenetic stratified outcomes with radiation therapy and chemotherapy.Journal of neuro-oncology · 2025Trial
- Comprehensive Molecular Analysis in NRG Oncology/RTOG 9813: A Phase 3 Study of Radiation and Temozolomide Versus Radiation and BCNU/CCNU in Anaplastic Astrocytoma.International journal of radiation oncology, biology, physics · 2025Trial
- Phase 2 trial of veliparib, local irradiation, and temozolomide in patients with newly diagnosed high-grade glioma: a Children's Oncology Group study.Neuro-oncology · 2025Trial
- A combined analysis of two prospective randomised studies exploring the impact of extended post-radiation temozolomide on survival outcomes in newly diagnosed glioblastoma.Journal of neuro-oncology · 2024Trial
- Vorasidenib in IDH1- or IDH2-Mutant Low-Grade Glioma.The New England journal of medicine · 2023Trial
- Carer preparedness improved by providing a supportive educational intervention for carers of patients with high-grade glioma: RCT results.Journal of neuro-oncology · 2023Trial
- Multicenter Phase II Trial of the PARP Inhibitor Olaparib in RecurrentCancer research communications · 2023Trial
- Temozolomide and Radiotherapy versus Radiotherapy Alone in Patients with Glioblastoma, IDH-wildtype: Post Hoc Analysis of the EORTC Randomized Phase III CATNON Trial.Clinical cancer research : an official journal of the American Association for Cancer Research · 2022Trial
- Long-Term Report of a Comprehensive Molecular and Genomic Analysis in NRG Oncology/RTOG 0424: A Phase II Study of Radiation and Temozolomide in High-Risk Grade II Glioma.JCO precision oncology · 2021Trial
- MGMT promoter methylation as a molecular biomarker in neuro-oncology: current practices, challenges, and future directions.Journal of neuro-oncology · 2026Review
- Evaluation of methodology, reporting and transparency of 50 highly cited randomised trials in neurology: a cross-sectional analysis.BMJ open · 2026Article
- HBQ1 Acts as a Prognostic Biomarker and Tumor Suppressor Linked to Antigen Presentation in Glioma.Cell biochemistry and function · 2026Article
- Metabolic Reprogramming in Glioblastoma Stem Cells Promotes Radiation Resistance Through a H3K18la/USP30/MBOAT2 Axis.Advanced science (Weinheim, Baden-Wurttemberg, Germany) · 2026Article
- IDH1-mutant vaccine in newly diagnosed astrocytoma: final analysis of the multicenter, single-arm, open-label, first-in-human phase 1 NOA16 trial.Nature cancer · 2026Article
- Real-World Validation of the Clinical Distinctiveness of IDH-Mutant Glioblastoma in the SEER Transition Era: A Population-Based Study Integrating Machine Learning.Brain and behavior · 2026Article
- Long-term outcomes in IDH-wildtype (IDH-wt) gliomas with historical WHO grade 2 and 3 histology.Journal of neuro-oncology · 2026Article
146 more citing papers are in PubMed but not listed here.
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Authors and funding
41 authors at 20 institutions in 10 countries.
Funding
Abstract
backgroundThe CATNON trial investigated the addition of concurrent, adjuvant, and both current and adjuvant temozolomide to radiotherapy in adults with newly diagnosed 1p/19q non-co-deleted anaplastic gliomas. The benefit of concurrent temozolomide chemotherapy and relevance of mutations in the IDH1 and IDH2 genes remain unclear.
methodsThis randomised, open-label, phase 3 study done in 137 institutions across Australia, Europe, and North America included patients aged 18 years or older with newly diagnosed 1p/19q non-co-deleted anaplastic gliomas and a WHO performance status of 0-2. Patients were randomly assigned (1:1:1:1) centrally using a minimisation technique to radiotherapy alone (59·4 Gy in 33 fractions; three-dimensional conformal radiotherapy or intensity-modulated radiotherapy), radiotherapy with concurrent oral temozolomide (75 mg/m
findingsBetween Dec 4, 2007, and Sept 11, 2015, 751 patients were randomly assigned (189 to radiotherapy alone, 188 to radiotherapy with concurrent temozolomide, 186 to radiotherapy and adjuvant temozolomide, and 188 to radiotherapy with concurrent and adjuvant temozolomide). Median follow-up was 55·7 months (IQR 41·0-77·3). The second interim analysis declared futility of concurrent temozolomide (median overall survival was 66·9 months [95% CI 45·7-82·3] with concurrent temozolomide vs 60·4 months [45·7-71·5] without concurrent temozolomide; hazard ratio [HR] 0·97 [99·1% CI 0·73-1·28], p=0·76). By contrast, adjuvant temozolomide improved overall survival compared with no adjuvant temozolomide (median overall survival 82·3 months [95% CI 67·2-116·6] vs 46·9 months [37·9-56·9]; HR 0·64 [95% CI 0·52-0·79], p<0·0001). The most frequent grade 3 and 4 toxicities were haematological, occurring in no patients in the radiotherapy only group, 16 (9%) of 185 patients in the concurrent temozolomide group, and 55 (15%) of 368 patients in both groups with adjuvant temozolomide. No treatment-related deaths were reported.
interpretationAdjuvant temozolomide chemotherapy, but not concurrent temozolomide chemotherapy, was associated with a survival benefit in patients with 1p/19q non-co-deleted anaplastic glioma. Clinical benefit was dependent on IDH1 and IDH2 mutational status.
fundingMerck Sharpe & Dohme.
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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.