Open Access
CC BY-NC-ND 4.0 · Horm Metab Res 2023; 55(04): 227-235
DOI: 10.1055/a-2042-2431
Original Article: Endocrine Care

A Revised Version of the TNM Classification Leads to Optimized Predictive Performance in Patients with Adrenocortical Carcinoma

Stephan Oliver David
1   Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Sarah Krieg
2   Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Irene Esposito
3   Institute of Pathology, Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Matthias Schott
4   Division for Specific Endocrinology, Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Frederik Lars Giesel
5   Department of Nuclear Medicine, Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Christoph Roderburg
2   Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Sven Heiko Loosen
2   Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Tom Luedde
2   Clinic for Gastroenterology, Hepatology and Infectious Diseases, Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
Wolfram Trudo Knoefel
1   Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
,
1   Department of Surgery (A), Heinrich-Heine-University and University Hospital Duesseldorf, Duesseldorf, Germany
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Abstract

The prognostic stratification of the current AJCC/UICC TNM classification for adrenocortical carcinoma (ACC) has been validated in only a few studies. In this study, it was hypothesized that redefining the T category cut-off would result in a significant improvement in estimated stage-related survival. In 935 patients with ACC from the SEER database, optimal cut-off values based on tumor size were first determined to redefine T1 and T2 categories. Cox proportional hazards regression analysis and receiver operating characteristics (ROC) were then used to determine the prognostic value of the revised version. A new cut-off value of 9.5 cm tumor size was established to differentiate between T1 and T2 tumors, leading to a revised TNM classification. As a result, a more homogeneous distribution of patients with ACC across all stages was observed. Notably, the predictive value of the newly proposed TNM classification in the ROC analysis exceeded that of the 7th and 8th editions of the AJCC/UICC classification system. Finally, the prognostic superiority of the revised TNM classification was confirmed in a multivariate Cox proportional hazards regression model. In conclusion, the present study demonstrates that updating the current staging system with revised T1 and T2 categories significantly improves the prediction of cancer-specific survival (CSS) in patients with ACC.



Publikationsverlauf

Eingereicht: 04. Februar 2023

Angenommen nach Revision: 09. Februar 2023

Accepted Manuscript online:
24. Februar 2023

Artikel online veröffentlicht:
05. April 2023

© 2023. The Author(s). This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial-License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/).

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