Sentinel-node-navigated neck surgery strategy,
does it really help with Noninferior three-year overall survival in clinically node-negative early oral cancer?
research showsThe grade is B. Three-year overall survival was 87.9% (one-sided 95% lower limit 82.4%) versus 86.6% (lower limit 80.9%), absolute difference +1.3 points, noninferiority P<0.001. The French Senti-MERORL trial found a result in the same direction, but its primary endpoint was two-year neck recurrence, so this verdict counts one confirmatory trial.
ads claimThis strategy does not omit surgery altogether; a positive sentinel node leads to neck dissection.
Useful facts when choosing a product
- Funding was 'a Health and Labour Sciences Research Grant ... from the Ministry of Health, Labour and Welfare of Japan.'
- Individual company relationships were disclosed, but trial funding was public.
- Korean oral-cancer surgical guidance lists sentinel-node biopsy as an alternative to elective neck dissection.
What the research actually shows
HNCMM excluded 4/275=1.45% from the FAS, below the 15% substantial-attrition threshold. French Senti-MERORL found two-year neck recurrence-free survival of 90.7% versus 89.6% and neck recurrence 13/140 versus 14/139, equivalence P<0.01, in the same direction. However, its primary endpoint was two-year neck recurrence, so this verdict counts one confirmatory trial. HNCMM's three-year overall survival and Senti-MERORL's two-year neck recurrence differ in duration, and all-cause death and neck recurrence are not comparable estimands. Overall survival includes second cancers and non-cancer deaths, while neck recurrence directly measures success of the neck-management strategy. The author lists had zero overlap and funding was independently Japanese and French, but comparability gates ① and ② are not met.
Axis 6 defect gates ① Defect: noninferiority/equivalence design. ② Listed item: noninferiority design. ③ Evidence: 'randomized, multicenter, and noninferiority trial' and the declared 12% clinically acceptable difference; the French trial was an equivalence trial. ④ Avoidable: yes; superiority was methodologically possible, although noninferiority fits a de-escalation question.
Attrition was 4/275=1.45%, below 15%, and is not counted.
Why this is classified as B (72)
H, R1, I2, and E+ provide three strength axes; with the B1 noninferiority-design ceiling, the result is B with 72 points.
Counterpoint. Equivalence is not proof of identity and requires experienced multidisciplinary teams.
Rejudgment record. Cross-check applied — Counted the publicly funded HNCMM three-year overall-survival noninferiority study as one confirmatory trial and retained the French neck-recurrence result as supporting evidence because endpoint and duration differ
| Endpoint | H | Hard endpoint - actual events such as death |
| Replication | R1 | Single confirmatory trial |
| Independence | I2 | Decisive evidence is publicly or non-profit funded |
| Effect size | E+ | Meets the clinically important threshold |
The scoring table and the verdict agree (B).
Sub-claim grades by effect
This ingredient is marketed for several effects. A single overall grade blends strong and weak claims together, so each effect is graded separately here. The overall grade reflects the strongest disconfirming or core claim.
| Effect (sub-claim) | Grade | Basis |
|---|---|---|
| Noninferior three-year overall survival | B | Rates were 87.9% versus 86.6%, noninferiority P<0.001. |
| Equivalent two-year neck recurrence outcome | B | The independent French trial found equivalence, P<0.01. |
Cross-check — Codex and Claude
Evidence Table
| Study | Design | Sample | Funding | Endpoint | Result | Weight |
|---|---|---|---|---|---|---|
| Study 1 | Japanese multicenter randomized noninferiority surgical trial | 271 | Health and Labour Sciences Research Grant from Japan's Ministry of Health, Labour and Welfare | Primary endpoint: three-year overall survival | 87.9% (one-sided 95% lower limit 82.4%) versus 86.6% (lower limit 80.9%), absolute difference +1.3 points, noninferiority P<0.001; CI for the between-group difference not reported. | Pivotal publicly funded survival trial |
| Study 2 | French multicenter randomized equivalence surgical trial | 139 | French National Institute of Cancer STIC 2007 | Primary endpoint: equivalence in two-year neck-node recurrence-free survival/neck recurrence | 90.7% versus 89.6%; neck recurrence 13/140 (9.3%) versus 14/139 (10.1%), absolute difference -0.8 points, equivalence P<0.01. | Independent French supporting evidence not counted as confirmatory because the endpoint differs |
Receipt — 2 References
All 2 cited sources were verified for existence at the original page (as of 2026-08-18).
Reviewed and approved: Chamgap Editorial Team · Approval date: 2026-08-18 · Corrections: none
Cite this verdict
[Chamgap] Benefit of Sentinel-Node-Navigated Neck Surgery for Noninferior 3-Year Survival in Clinically Node-Negative Early Oral Cancer — Evidence Grade B·72. 2 cited sources checked. Source: https://chamgap.com/en/verdicts/general/sentinel-node-navigated-neck-surgery-early-oral-cancer-survival/ · CC BY 4.0CC BY 4.0 — free to use with attribution; do not distort grades, numbers, or verdict meaning.
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