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Chinese Journal of Clinicians(Electronic Edition) ›› 2021, Vol. 15 ›› Issue (11): 890-896. doi: 10.3877/cma.j.issn.1674-0785.2021.11.016

• Basic Science Research • Previous Articles     Next Articles

Identification of independent prognostic factors for colon cancer based on p53 protein expression and tumor budding histology

Fang Li1, Yueping Liu1, Mengxue Han1, Guiying Wang2,()   

  1. 1. Department of Pathology, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050001, China
    2. Second Department of General Surgery, the Fourth Hospital of Hebei Medical University, Shijiazhuang 050001, China; Department of Gastrointestinal Surgery, the Third Hospital of Hebei Medical University, Shijiazhuang 050051, China
  • Received:2021-08-05 Online:2021-11-15 Published:2022-04-02
  • Contact: Guiying Wang

Abstract:

Objective

To investigate the relationship between the expression of p53 protein & tumor budding and clinicopathological features of colon cancer, and to determine the independent prognostic factors for colon cancer.

Methods

Data of 424 patients with colon cancer who underwent radical surgical resection at the Fourth Hospital of Hebei Medical University from January 2014 to December 2015 were collected. The protein expression of p53 was detected by immunohistochemistry, and tumor budding was evaluated by hematoxylin and eosin staining. The factors affecting the expression of p53 protein and the budding of tumor and their correlation were analyzed. Kaplan-Meier method was used to draw survivorship curve, and Cox proportional risk model was used to predict independent factors for 5-year survival in colon cancer patients.

Results

Among 424 patients with colon cancer, 220 had wild-type p53 and 204 had mutant p53, with a mutation rate of 48.11%. Univariate analysis showed that p53 mutation was closely related to tumor location, invasion depth, lymph node metastasis, distant metastasis, vascular invasion, differentiation degree, and clinical stage (P<0.05). The grade of tumor budding was low in 170 cases (40.09%), moderate in 219 cases (51.65%), and high in 35 cases (8.25%). Univariate analysis showed that tumor budding was closely related to tumor size, invasion depth, lymph node metastasis, distant metastasis, vascular invasion, nerve invasion, and differentiation degree (P<0.05). The higher the grade of tumor budding, the higher the p53 protein mutation rate (P<0.05). Multivariate Cox regression analysis showed that tumor invasion depth, distant metastasis, p53 mutation status, and tumor budding were independent predictors of 5-year survival (P<0.05).

Conclusion

p53 mutation is not only closely related to the tumor budding in colon cancer, but it is also an independent predictor of the prognosis of colon cancer.

Key words: Colon cancer, p53, Tumor budding

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