Abstract
Purpose
In a large salivary duct carcinoma (SDC) cohort, we aimed to investigate the clinical factors influencing their survival outcomes and to further establish prognostic models.
Methods
Data of patients with SDC were extracted from the Surveillance, Epidemiology, and End Results database (1975–2019). A retrospective analysis was conducted to explore the prognostic factors on overall survival (OS) and disease-specific survival (DSS), and corresponding nomograms were established.
Results
A steady upward trend in the incidence of SDC was observed over the past four decades. Totally, 399 patients (280 in the training set and 199 in the testing set) were enrolled. Advanced T stage, lymph node metastasis, distant metastasis, and surgery were associated with favorable OS and DSS. Besides, age > 80 years exhibited worse OS. The selected variables above were used to construct nomograms and online web calculators that could accurately predict patient survival. In addition, risk stratification systems were generated to identify low- and high-risk patients. As the risk level increased, the risk of both patient mortality and disease-specific mortality increased.
Conclusions
The SDC incidence was low, but steadily increasing. The proposed prognostic models provided a robust and efficient approach to predict survival and risk stratification in SDC patients.
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Availability of data and materials
Not available.
Abbreviations
- AUC:
-
Area under the curve
- C-index:
-
Concordance index
- DCA:
-
Decision curve analysis
- DMFS:
-
Distant metastasis-free survival
- LNR:
-
Lymph node ratio
- ROC:
-
Receiver operating characteristic
- SDC:
-
Salivary duct carcinoma
- SGCs:
-
Salivary gland cancers
- SEER:
-
Surveillance, Epidemiology, and End Results
- OS:
-
Overall survival
- DSS:
-
Disease-specific survival
- HR:
-
Risk ratio
- CI:
-
Confidence interval
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Acknowledgements
The authors acknowledge the efforts of the SEER Program tumor registries in the creation of the SEER database and thank all the patients analyzed in this study.
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DZ and LL conceived and designed the study. DZ analyzed data and wrote the paper, and LL make suggestion and revised the paper. All authors have read and agreed to the published version of the manuscript.
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Zhang, D., Li, L. Prognostic models for estimating survival of salivary duct carcinoma: a population-based study. Eur Arch Otorhinolaryngol 280, 1939–1954 (2023). https://doi.org/10.1007/s00405-022-07755-3
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DOI: https://doi.org/10.1007/s00405-022-07755-3