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Chinese Journal of Breast Disease(Electronic Edition) ›› 2022, Vol. 16 ›› Issue (03): 138-146. doi: 10.3877/cma.j.issn.1674-0807.2022.03.002

• Original Article • Previous Articles     Next Articles

Risk factors of recurrence and metastasis in patients with hormonal receptor-positive and HER-2-negative T1-3N0M0 invasive breast cancer

Lili Guo1, Niuniu Hou2, Jingjing Xiao1, Zhe Wang1, Yaping Wang1, Jun Yi1, Rui Ling1,()   

  1. 1. Department of Thyroid, Breast and Vascular Surgery, Xijing Hospital, Air Force Medical University, Xi’an 710032, China
    2. Department of General Surgery, Air Force Hospital of Eastern Theater Command of PLA, Nanjing 210001, China
  • Received:2022-02-18 Online:2022-06-01 Published:2022-07-22
  • Contact: Rui Ling
  • About author:
    Guo Lili and Hou Niuniu are co-first authors

Abstract:

Objective

To analyze the risk factors of recurrence and metastasis in female patients with hormone receptor(HR)-positive/HER-2-negative T1-3N0M0 invasive breast cancer.

Methods

The clinicopathological data of 1 064 patients with HR-positive/HER-2-negative T1-3N0M0 invasive breast cancer in the Xijing Hospital of Air Force Medical University from January 1, 2008 to December 31, 2017 were retrospectively analyzed. Kaplan-Meier method was used to make survival analysis. The Cox proportional risk regression model was used to explore independent prognostic factors for recurrence and metastasis. Receiver operating characteristic (ROC) curve was drawn and area under the curve (AUC) was calculated to assess the accuracy of independent factors in predicting the recurrence-free survival.

Results

The 5-year and 10-year recurrence-free survival in these patients were 93.90% (95%CI: 92.30%-95.40%) and 87.10% (95%CI: 84.00%-90.20%), respectively. Univariate Cox proportional risk regression analysis showed that endocrine therapy, maximum diameter of the tumor and Ki-67 expression were affecting factors for recurrence and metastasis (HR=5.39, 95%CI: 3.25-8.94, P<0.001; HR=1.28, 95%CI: 1.11-1.48, P=0.001; HR=1.92, 95%CI: 1.24-2.96, P=0.003). Multivariate Cox proportional risk regression analysis showed that endocrine therapy, maximum diameter of the tumor and Ki-67 expression were independent prognostic factors of recurrence and metastasis (HR=4.76, 95%CI: 2.83-8.02, P<0.001; HR=1.17, 95%CI: 1.01-1.37, P=0.043; HR=1.79, 95%CI: 1.16-2.76, P=0.009). The risk of postoperative recurrence and metastasis in patients who did not receive endocrine therapy was 4.76 times as high as that in patients with endocrine therapy; the risk of postoperative recurrence and metastasis in patients with Ki-67 level >20% was 1.79 times as high as that in patients with Ki-67 level ≤20%. The AUC indicated that the above-mentioned three variables had high accuracy in predicting postoperative recurrence-free survival in HR-positive/HER-2-negative T1-3N0M0 invasive breast cancer. The 3-year, 5-year, and 10-year AUC was 0.73 (95%CI: 0.67-0.80, P<0.001), 0.72 (95%CI: 0.66-0.78, P<0.001), 0.68 (95%CI: 0.62-0.75, P<0.001), respectively.

Conclusion

In patients with HR-positive/ HER-2-negative T1-3N0M0 invasivebreast cancer, the combination of these three factors (endocrine therapy, maximum diameter of the tumor and Ki-67 expression)can predict postoperative recurrence-free survival and provide guidance for individualized treatment.

Key words: Breast neoplasms, Receptors, estrogen, Humans, Receptor, epidermal growth factor, Recurrence

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