Abstract
Background
The incidence of rectal cancer has meaningfully increased in young patients. However, quantitative evaluation for the competing data of early-onset rectal cancer is lacking. So, we performed a competing risk analysis to calculate the cumulative incidence of death for patients with early-onset rectal cancer and developed a nomogram to predict the probability of cancer-specific mortality for these patients.
Methods
We abstracted data of patients with early-onset rectal cancer between 2004 and 2016 by using the Surveillance, Epidemiology, and End Results program database. The cumulative incidence function was used to calculate the crude cancer-specific mortality of early-onset rectal cancer. Fine and Gray’s proportional sub-distribution hazard model was adopted to explore the risk factors of cancer-specific death. Then, we establish a nomogram to predict their 3-, 5-, and 10-year probabilities.
Results
We identified 9917 patients with early-onset rectal cancer, and they were randomly divided into training (n = 6941) and validation (n = 2976) cohorts. In the training cohort, the 3-, 5-, and 10-year cumulative incidences of cancer-specific death after diagnosis for early-onset rectal cancer were 11.4%, 19.9%, and 28.8%, respectively. Fine and Gray’s model showed that sex, race, marital status, histology, T stage, N stage, M stage, examined lymph nodes, and pretreatment carcinoembryonic antigen were independently associated with cancer-specific mortality. Such factors were selected to develop a prognostic nomogram.
Conclusion
The competing risk nomogram has an ideal performance for predictive cancer-specific mortality in early-onset rectal cancer.
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Change history
24 March 2020
The original version of this article, unfortunately, contained errors.
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Acknowledgments
The authors would like to thank SEER for open access to their database. The opinions expressed in this study are those of the authors and do not represent the opinions of the National Cancer Institute.
Funding
This project was funded by Natural Science Foundation of Guangdong (2015A030313827), Guangdong Province Medical Scientific Research Fund Project (No. A2019537), Competitive Project of Financial Special Funds for Science and Technology of Zhanjiang (2018A01026), Guangdong Medical University Scientific Research Fund Project (GDMUM201806), and The Affiliated Hospital of Guangdong Medical University Clinical Research Program (LCYJ2018C004).
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Wang, Y., Wu, J., He, H. et al. Nomogram predicting cancer-specific mortality in early-onset rectal cancer: a competing risk analysis. Int J Colorectal Dis 35, 795–804 (2020). https://doi.org/10.1007/s00384-020-03527-9
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DOI: https://doi.org/10.1007/s00384-020-03527-9