Objective:To analyze the expression of serum thymidine kinase 1 (TK1), interleukin-22 (IL-22) and IL-6 in patients with breast cancer and their relationship with postoperative recurrence.Methods:100 patients with breast cancer from Jan. 2021 to Jan. 2023 were included as the observation group, and 30 healthy women who underwent physical examination in the First People’s Hospital of Jiande during the same period were included as the control group. Serum TK1, IL-22 and IL-6 levels were compared and local recurrence was followed up after surgery. Patients were separated into the recurrence subgroup and non-recurrence subgroup according to postoperative recurrence. The levels of serum TK1, IL-22, IL-6 and clinicopathological features were compared, and the influencing factors of postoperative recurrence of breast cancer were analyzed by multivariate Logistic regression. Receiver operating characteristic curve (ROC) was drawn to evaluate the predictive efficacy of serum TK1, IL-22 and IL-6 in postoperative breast cancer recurrence.Results:Serum TK1, IL-22 and IL-6 levels in the observation group were significantly higher ( t=15.91, 21.99, 9.17, P<0.05); Among the 100 patients with breast cancer, 22 recurred and 78 did not recurred. The proportion of lymph node metastasis, the proportion of postoperative chemotherapy, the proportion of postoperative radiotherapy, serum TK1, serum IL-22 and serum IL-6 levels in the recurrence subgroup were significantly higher than those in the non-recurrence subgroup ( χ2/ t=8.09, 4.74, 4.76, 4.24, 4.43, 5.31, P<0.05); Stepwise Logistic regression showed that lymph node metastasis, high TK1, high IL-22 and high IL-6 were risk factors for postoperative recurrence of breast cancer patients, and standard postoperative chemotherapy and postoperative radiotherapy were protective factors (Wald χ2value =13.424, 4.689, 4.631, 7.334, 8.925, 5.855, P<0.05); The area under the curve (AUC) of TK1, IL-22, IL-6 and combined detection for predicting postoperative recurrence of breast cancer patients were 0.779, 0.739, 0.816 and 0.893, respectively ( AUC=0.779, 0.739, 0.816, 0.893, P<0.05) . Conclusions:Serum TK1, IL-22 and IL-6 levels increase in patients with breast cancer. High TK1, IL-22 and IL-6 levels are risk factors for postoperative recurrence of breast cancer, and combined detection has a good predictive effect on postoperative recurrence of breast cancer.

Objective:To analyze the expression of serum thymidine kinase 1 (TK1), interleukin-22 (IL-22) and IL-6 in patients with breast cancer and their relationship with postoperative recurrence.Methods:100 patients with breast cancer from Jan. 2021 to Jan. 2023 were included as the observation group, and 30 healthy women who underwent physical examination in the First People’s Hospital of Jiande during the same period were included as the control group. Serum TK1, IL-22 and IL-6 levels were compared and local recurrence was followed up after surgery. Patients were separated into the recurrence subgroup and non-recurrence subgroup according to postoperative recurrence. The levels of serum TK1, IL-22, IL-6 and clinicopathological features were compared, and the influencing factors of postoperative recurrence of breast cancer were analyzed by multivariate Logistic regression. Receiver operating characteristic curve (ROC) was drawn to evaluate the predictive efficacy of serum TK1, IL-22 and IL-6 in postoperative breast cancer recurrence.Results:Serum TK1, IL-22 and IL-6 levels in the observation group were significantly higher ( t=15.91, 21.99, 9.17, P<0.05); Among the 100 patients with breast cancer, 22 recurred and 78 did not recurred. The proportion of lymph node metastasis, the proportion of postoperative chemotherapy, the proportion of postoperative radiotherapy, serum TK1, serum IL-22 and serum IL-6 levels in the recurrence subgroup were significantly higher than those in the non-recurrence subgroup ( χ2/ t=8.09, 4.74, 4.76, 4.24, 4.43, 5.31, P<0.05); Stepwise Logistic regression showed that lymph node metastasis, high TK1, high IL-22 and high IL-6 were risk factors for postoperative recurrence of breast cancer patients, and standard postoperative chemotherapy and postoperative radiotherapy were protective factors (Wald χ2value =13.424, 4.689, 4.631, 7.334, 8.925, 5.855, P<0.05); The area under the curve (AUC) of TK1, IL-22, IL-6 and combined detection for predicting postoperative recurrence of breast cancer patients were 0.779, 0.739, 0.816 and 0.893, respectively ( AUC=0.779, 0.739, 0.816, 0.893, P<0.05) . Conclusions:Serum TK1, IL-22 and IL-6 levels increase in patients with breast cancer. High TK1, IL-22 and IL-6 levels are risk factors for postoperative recurrence of breast cancer, and combined detection has a good predictive effect on postoperative recurrence of breast cancer.