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Annals of Surgical Oncology
Published in: Annals of Surgical Oncology 3/2015

01-12-2015 | Head and Neck Oncology

Prognostic Performance of Current Stage III Oral Cancer Patients After Curative Intent Resection: Evidence to Support a Revision of the American Joint Committee on Cancer Staging System

Authors: M. Amit, MD, MSc, T. C. Yen, MD, C. T. Liao, MD, P. Chaturvedi, MD, J. P. Agarwal, MD, L. P. Kowalski, MD, Hugo F. Kohler, MD, A. Ebrahimi, MD, J. R. Clark, MD, C. R. Cernea, MD, S. J. Brandao, MD, M. Kreppel, MD, J. Zöller, MD, M. D. Fliss, MD, G. Bachar, MD, T. Shpitzer, MD, V. A. Bolzoni, MD, P. R. Patel, MD, S. Jonnalagadda, MD, K. T. Robbins, MD, N. G. Iyer, MD, T. Skanthakumar, MD, J. P. Shah, MD, S. G. Patel, MD, Z. Gil, MD, PhD

Published in: Annals of Surgical Oncology | Special Issue 3/2015

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Abstract

Background

The American Joint Committee on Cancer (AJCC) stage III classification of oral cavity squamous cell carcinoma (OCSCC) represents a heterogeneous group of patients with early local disease with regional metastases (T1N1 and T2N1) and advanced local disease with or without regional metastasis (T3N0 and T3N1).

Objective

The aim of this study was to evaluate prognostic heterogeneity in the stage III category.

Methods and Patients

An international retrospective multicenter study of 1815 patients who were treated for OCSCC from 2003 to 2011.

Results

Kaplan–Meier survival analysis and multivariate models of stage III patients revealed better overall survival (OS; HR 2.12, 95 % CI 1.03–4.15; p = 0.01) and disease-specific survival (DSS; HR 1.7, 95 % CI 1.16–4.12; p = 0.04) rates for patients with T1–2N1/T3N0 disease than for patients with T3N1 disease. The outcomes of patients with T3N1 and stage IVa disease were similar (p = 0.89 and p = 0.78 for OS and DSS, respectively). Modifying stage classification by transferring the T3N1 category to the stage VIa group resulted in a better prognostic performance [Harrell’s concordance index, C index 0.76; Akaike’s Information Criterion (AIC) 4131.6] compared with the AJCC 7th edition staging system (C index 0.65; AIC 4144.9) for OS. When DSS was assessed, the suggested staging system remained the best performing model (C index 0.71; AIC 1061.3) compared with the current AJCC 7th edition staging (C index 0.64; AIC 1066.2).

Conclusions

The prognosis of T3N1 and stage IVa disease are similar in OCSCC, suggesting that these categories could be combined in future revisions of the nodal staging system to enhance prognostic accuracy.
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Metadata
Title
Prognostic Performance of Current Stage III Oral Cancer Patients After Curative Intent Resection: Evidence to Support a Revision of the American Joint Committee on Cancer Staging System
Authors
M. Amit, MD, MSc
T. C. Yen, MD
C. T. Liao, MD
P. Chaturvedi, MD
J. P. Agarwal, MD
L. P. Kowalski, MD
Hugo F. Kohler, MD
A. Ebrahimi, MD
J. R. Clark, MD
C. R. Cernea, MD
S. J. Brandao, MD
M. Kreppel, MD
J. Zöller, MD
M. D. Fliss, MD
G. Bachar, MD
T. Shpitzer, MD
V. A. Bolzoni, MD
P. R. Patel, MD
S. Jonnalagadda, MD
K. T. Robbins, MD
N. G. Iyer, MD
T. Skanthakumar, MD
J. P. Shah, MD
S. G. Patel, MD
Z. Gil, MD, PhD
Publication date
01-12-2015
Publisher
Springer US
Published in
Annals of Surgical Oncology / Issue Special Issue 3/2015
Print ISSN: 1068-9265
Electronic ISSN: 1534-4681
DOI
https://doi.org/10.1245/s10434-015-4842-3

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