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Erschienen in: Strahlentherapie und Onkologie 9/2022

06.04.2022 | Original Article

Nomogram for distant metastasis-free survival in patients with locoregionally advanced nasopharyngeal carcinoma

verfasst von: Huiyun Yang, Rongjun Zhang, Ruyun Zhang, Bin Zhang, Yuan Xie, Guanjie Qin, Yunyan Mo, Xiaolan Ruan, Dr. Wei Jiang

Erschienen in: Strahlentherapie und Onkologie | Ausgabe 9/2022

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Abstract

Objective

To develop and validate a nomogram to predict distant metastasis-free survival of patients with locoregionally advanced nasopharyngeal carcinoma.

Methods

We collected the total clinical data of 820 nasopharyngeal carcinoma (NPC) patients, of whom 482 formed the training cohort from one hospital and 328 made up the validation cohort from another hospital. By analyzing the prognosis of all patients after intensity-modulated radiotherapy by univariate and multivariate Cox regression models, a nomogram related to DMFS was created in the training cohort. The discriminatory and calibration power of the nomogram was successively assessed in the training and validation cohorts by the C‑index and calibration curve. The predictive ability for 3‑year DMFS was compared between the nomogram and TNM stage using ROC curves. Patients were divided into different risk groups based on scores calculated from the nomogram.

Results

Age, lymph node gross tumor volume (GTVnd), and gross tumor volume of the nasopharynx (GTVnx) were the factors included in the nomogram. The C‑index of the nomogram was 0.721 in the training cohort and 0.750 in the validation cohort. The calibration curves were satisfactory. Patients in the high-risk group were more likely to develop metastases.

Conclusion

A nomogram incorporating age, GTVnd, and GTVnx showed good performance for predicting DMFS in patients with locoregionally advanced NPC.
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Metadaten
Titel
Nomogram for distant metastasis-free survival in patients with locoregionally advanced nasopharyngeal carcinoma
verfasst von
Huiyun Yang
Rongjun Zhang
Ruyun Zhang
Bin Zhang
Yuan Xie
Guanjie Qin
Yunyan Mo
Xiaolan Ruan
Dr. Wei Jiang
Publikationsdatum
06.04.2022
Verlag
Springer Berlin Heidelberg
Erschienen in
Strahlentherapie und Onkologie / Ausgabe 9/2022
Print ISSN: 0179-7158
Elektronische ISSN: 1439-099X
DOI
https://doi.org/10.1007/s00066-022-01926-1

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