A phase III study of standard fractionation radiotherapy with concurrent high-dose cisplatin versus accelerated fractionation radiotherapy (RT) with panitumumab in patients with locally advanced stage III and IV squamous cell carcinoma of the head and neck (SCCHN) (NCIC Clinical Trials Group HN.6).
Bibliographic record
Abstract
TPS5600 Background: Standard treatment for locally advanced SCCHN, chemoradiotherapy (CRT), leads to significant acute and long-term morbidity. The demonstration that EGFR antibody (Ab) therapy improves outcome when added to standard RT (Bonner NEJM 2006) and that altered fractionation RT improves outcome compared to standard RT that is of similar magnitude as CRT (Bourhis Lancet 2006), led to the hypothesis that the combination of the two treatment strategies will improve efficacy compared to standard CRT with good tolerability. Methods: HN.6 is a Canadian phase III randomized study comparing standard RT 70Gy/35 over 7 weeks + cisplatin 100mg/m2 d 1, 22, 43 to accelerated RT 70Gy/35 over 6 weeks + panitumumab (anti EGFR Ab)) 9mg/kg 1 week prior to RT, d15, 36. Key eligibility criteria are: SCC of oral cavity, oropharynx, larynx or hypopharynx; TanyN+M0 or T3-4N0M0; adequate organ function and PS. Primary endpoint is progression free survival (PFS). Secondary endpoints include OS, local PFS, regional PFS, distant metastases, swallowing related QOL, functional swallowing outcomes, and economic evaluation (healthcare utilization, health utilities, indirect costs). Tissue and blood collection will allow biomarker evaluation including HPV status. Real time quality review of RT plans with plan data and radiology archiving will allow future analysis of RT parameters relative to toxicity and patterns of failure. Clinical epidemiological data will be prospectively collected and correlated with biomarkers and outcome. Planned sample size is 320 patients over 3.2 years with 3 more years of follow-up and target hazard ratio = 0.7 (absolute difference in control arm 2 year PFS of 12%, power 80%, 2-tail type 1 error 0.05). If superiority is not demonstrated, noninferiority will be tested. One interim analysis is planned. Conduct to Date: Study activation: Dec 2008 and completed accrual in Nov 2011. In Oct 2011, the DSMC recommended trial continuation. Supported by CCSRI grant 021039 and Amgen Inc. ClinicalTrials.gov: NCT00820248.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.004 | 0.002 |
| Meta-epidemiology (narrow) | 0.003 | 0.001 |
| Meta-epidemiology (broad) | 0.004 | 0.003 |
| Bibliometrics | 0.001 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.001 | 0.001 |
| Open science | 0.002 | 0.001 |
| Research integrity | 0.002 | 0.005 |
| Insufficient payload (model declined to judge) | 0.007 | 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; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
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".