ArticleNeuro-oncology2025
Canonical amplifications and CDKN2A/B loss refine IDH1/2-mutant astrocytoma prognosis.
Article in Neuro-oncology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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
13 citing papers in PubMed.
- Expanding the molecular grading criteria in IDH-mutant astrocytoma.Neuro-oncology · 2026Article
- Validation of proposed cIMPACT-NOW update 12 molecular grading criteria for IDH-mutant astrocytoma.Acta neuropathologica · 2026Article
- DNA copy number patterns reveal prognostic markers and elucidate mechanisms of evolution in IDH-mutant astrocytoma.Neuro-oncology · 2026Article
- Management of Adult Patients With Isocitrate Dehydrogenase-Mutant Gliomas in Australia: An Expert Position Statement From the Cooperative Trials Group for Neuro-Oncology.Asia-Pacific journal of clinical oncology · 2026Review
- Isocitrate Dehydrogenase-Mutant Astrocytomas: Risk Stratification and Therapeutic Advance.MedComm · 2026Review
- From Classical to Emerging Biomarkers of Brain and Central Nervous System Tumors. An Evidence-Based Review with a Focus on Gliomas.Cellular and molecular neurobiology · 2026Review
- Loss ofJournal of Cancer · 2026Article
- Recurrent IDH-mutant astrocytoma WHO grade 4 diagnosed during pregnancy: case report with literature review.Frontiers in oncology · 2026Article
- EGFR alteration is an adverse prognostic factor in IDH-mutant astrocytoma.Acta neuropathologica · 2025Article
- Leveraging transcriptomic, DNA methylation, and molecular alteration data to optimize the classification of IDH-mutant gliomas for therapy selection.Frontiers in oncology · 2025Article
- IDH mutant high-grade gliomas.Frontiers in molecular neuroscience · 2025Review
- Disturbance of functional connectivity in patients with low grade glioma is associated with worse progression-free survival.Neuro-oncology advancesArticle
- Hemizygous deletion ofNeuro-oncology advancesArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
8 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundMolecular features have been incorporated alongside histologic criteria to improve glioma diagnostics and prognostication. CDKN2A/B homozygous-loss associates with worse survival in IDH1/2-mutant astrocytomas (IDHmut-astrocytomas), the presence of which denotes a grade 4 tumor independent of histologic features. However, no molecular features distinguish survival amongst histologically defined grade 2 and 3 IDHmut-astrocytomas.
methodsWe assembled a cohort of patients ≥19 years old diagnosed with an IDHmut-astrocytoma between 1989 and 2020 from public datasets and several academic medical centers. Multivariate modeling and unbiased clustering were used to stratify risk.
resultsWe identified 998 IDHmut-astrocytoma patients (41.5% female; 85.6% white). Tumor grade, CDKN2A/B loss, and/or ≥1 focal amplification were associated with reduced survival. Grade 2/3 patients with intact CDKN2A/B and no focal amplifications survived the longest (OS 205.7 months). Survival for grade 2/3 cases with either CDKN2A/B hemizygous-loss or focal amplifications (80.4, 88.7 months respectively) did not differ significantly from grade 4 cases with intact CDKN2A/B and no amplifications (91.5 months, P = .93). Grade 4 patients with either hemizygous or homozygous loss of CDKN2A/B had the shortest survival (OS 31.9, 32.5 months respectively), followed by grade 4 cases with intact CDKN2A/B and focal gene amplifications (OS 55.9 months). Integrating CDKN2A/B status and amplifications alongside histopathologic grade refined overall survival prediction. Unbiased clustering revealed 9 distinct molecular profiles, with differential survival. IDHmut-astrocytomas with any CDKN2A/B loss clustered together, regardless of grade, and exhibited the poorest outcomes.
conclusionsCombining CDKN2A/B hemizygous-loss and focal gene amplifications reveals a group of IDHmut-astrocytoma patients with an intermediate prognosis, refining IDHmut-astrocytoma classification.
Indexed as
Identifiers
What OpenQuestion holds
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.