CTNI-57. LOW-RISK MENINGIOMA: OUTCOMES FROM NRG ONCOLOGY/RTOG 0539
Bibliographic record
Abstract
Abstract PURPOSE/OBJECTIVE(S) Outcomes of low-risk meningioma from NRG/RTOG-0539. MATERIALS/METHODS Outcomes of the intermediate and high-risk cohorts from this phase II trial have been previously reported. Low-risk (Group 1: new WHO grade 1) patients were observed after gross total (GTR) or subtotal resection (STR). Progression-free (PFS) and overall (OS) were estimated using Kaplan-Meier. CTCAE v3 AE grading was employed. RESULTS Group 1 enrolled 65 patients. 56/60 (93.4%) evaluable patients had investigator-reported GTR. Sufficient imaging for central confirmation was available for 48: GTR in 35 and STR in 13. Median follow-up for living patients was 9.1 years (y). For all evaluable patients 5 and 10 y PFS and OS rates were 89.4 and 85.0%, and 98.3 and 93.8%, respectively. For patients with centrally-confirmed STR, 5/10 y PFS rates were 72.7/72.7%, with 100% 10 y OS. For patients with centrally-confirmed GTR, 5/10 y PFS and OS rates were 94.3/87.6 and 97.1/90.4%, respectively. For combined study cohorts (Groups 1–3) with central-review (n=104), the median centrally-measured largest pre-operative tumor dimension was 4.3 cm (range 0.4 - 14.4); this was significantly associated with OS (hazard ratio [HR]=1.03, p=0.021) and PFS (HR=1.03, p=0.003). No grade 4 or 5 protocol-related adverse events were reported. There were 1 grade 3 (infection), 4 grade 2 (neurologic, pulmonary, gastrointestinal, and pain), and 5 grade 1 (3 neurologic, 1 occulovisual, 1 constitutional) events from 5 patients. CONCLUSION These results prospectively validate high OS and PFS outcomes for low-risk meningioma managed with surgery followed by observation, but raise questions regarding optimal management following STR (5 y PFS 72.7%), a subcohort that could potentially benefit from adjuvant therapy. However, we identified considerable discordance between local and central assessments of resection extent. Pre-operative tumor size has a significant impact on OS and PFS. Supported by: U10CA180868 and U10CA180822 from the National Cancer Institute (NCI)
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How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 0.002 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; both teacher heads agree on what is shown here.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".