Laboratory Medicine ›› 2024, Vol. 39 ›› Issue (2): 155-160.DOI: 10.3969/j.issn.1673-8640.2024.02.010

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Application of serum TK1 in postoperative monitoring of thyroid papillary carcinoma patients

SONG Xiaolong, QIN Jinlü, YANG Ru, WEI Long, ZHOU Jianping()   

  1. Radiation and Immunization Center,Shaanxi Provincial People's Hospital,Xi'an 710068,Shaanxi,China
  • Received:2022-11-30 Revised:2023-10-29 Online:2024-02-28 Published:2024-03-26
  • Contact: ZHOU Jianping

Abstract:

Objective To investigate the application role of serum thymidine kinase 1(TK1) in postoperative monitoring of thyroid papillary carcinoma(PTC) patients. Methods A total of 178 patients with PTC in Shaanxi Provincial People's Hospital from July 2020 to March 2021 were enrolled,which included 53 cases in subtotal thyroidectomy group,62 cases in total thyroidectomy group and 63 cases in total thyroidectomy + 131I treatment group. According to the treatment efficiency after 12 months,the patients were classified into excellent response(ER) group(153 cases) and non-excellent response(NER)group(25 cases). The clinical data of patients were collected,and the levels of TK1 and thyroglobulin(Tg) were monitored before operation and after 1,3,6 and 12 months of operation. Receiver operating characteristic(ROC) curve was applied to evaluate the efficacy of TK1 and Tg at different times in predicting poor prognosis of PTC. The risk factors affecting the poor prognosis of PTC were analyzed by binary Logistic regression analysis. Results Between ER and NER groups,there was statistical significance for age,multifocality,maximum tumor diameter,T stage,N stage and the number of metastatic lymph nodes(P<0.05),and there was no statistical significance in sex,capsular invasion and treatment(P>0.05). Serum TK1 level in NER group was higher than that in ER group at all time points after operation(P<0.05). Serum TK1 levels in NER patients in subtotal thyroidectomy group and total thyroidectomy group were higher than those in ER patients at 6 months and 12 months after operation(P<0.05). The serum Tg level of NER patients in total thyroidectomy group was higher than that in ER patients at all time points before and after operation(P<0.05). ROC curve analysis showed that serum TK1 level at 12 months after operation had the highest efficacy in determining poor prognosis in patients with subtotal thyroidectomy,and the area under curve(AUC) was 0.940,followed by serum TK1 level at 6 months after operation(AUC was 0.835). TK1 and Tg combined determination had the highest AUC(0.964) at 12 months after operation,followed by TK1 and Tg combined determination at 6 months after operation(AUC was 0.943). Binary Logistic regression analysis showed that T stage and preoperative Tg≥62.08 IU·L-1were risk factors for poor prognosis in PTC patients [odds ratios(OR) were 5.060 and 2.908,95% confidence intervals(CI) were 2.593-9.875 and 1.004-8.421,respectively,P<0.05]. Conclusions Dynamic monitoring of TK1 can accurately evaluate the disease progression of patients undergoing subtotal thyroidectomy,the combined determination of TK1 and Tg levels can evaluate the prognosis of patients with total thyroidectomy.

Key words: Thymidine kinase 1, Thyroglobulin, Papillary thyroid carcinoma, Prognosis

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