circKIF4A表达与甲状腺癌患者临床病理特征及预后的关系

Relationship between circKIF4A expression and clinicopathologic features and prognosis of thyroid cancer patients

目的探讨circKIF4A表达与甲状腺癌患者临床病理特征及预后的关系。方法采用随机取样法选取2016年4月至2017年4月在该院确诊为甲状腺癌患者120例,在手术中取患者癌组织和癌旁组织,根据手术病理检测分为甲状腺癌组和癌旁组。采用qRT-PCR的方法检测circKIF4A在甲状腺癌组、癌旁组中的相对表达水平,分析circKIF4A表达与甲状腺癌临床病理特征的关系。Kaplan-Meier生存曲线分析circKIF4A表达与甲状腺癌患者预后的关系。Cox回归分析甲状腺癌患者术后5年预后不良的影响因素。结果与癌旁组circKIF4A相对表达水平相比,甲状腺癌组circKIF4A相对表达水平升高,差异有统计学意义(P<0.05)。circKIF4A表达与包膜侵犯、淋巴结转移、分化程度有关(P<0.05);Kaplan-Meier生存曲线分析显示,circKIF4A高表达患者术后5年累积生存率低于circKIF4A低表达患者,差异有统计学意义(χ^(2)=11.368,P=0.001);多因素分析结果显示,包膜侵犯、分化程度、淋巴结转移、circKIF4A表达水平是甲状腺癌患者术后5年预后不良的影响因素(P<0.05)。结论circKIF4A在甲状腺癌组织中呈高表达,与甲状腺癌患者临床病理特征及术后5年生存情况有关,有作为甲状腺癌预后的潜在标志物的可能。

Objective To investigate the relationship between circKIF4A expression and clinicopathologic features and prognosis of thyroid cancer patients.Methods A total of 120 patients diagnosed with thyroid cancer in our hospital from April 2016 to April 2017 were selected by random sampling method.Cancer tissues and adjacent tissues were taken during surgery and divided into thyroid cancer group and adjacent cancer group according to surgical pathologic detection.The relative expression level of circKIF4A in thyroid cancer group and paracancer group was detected by qRT-PCR,and the relationship between circKIF4A expression and clinicopathological features of thyroid cancer was analyzed.Kaplan-Meier survival curve was used to analyze the relationship between circKIF4A expression and prognosis of thyroid cancer patients.Cox regression analysis was performed to analyze the factors influencing the poor prognosis of patients with thyroid cancer 5 years after surgery.Results The relative expression level of circKIF4A in thyroid cancer group was higher than that in paracancer group,and the difference was statistically significant(P<0.05).The expression of circKIF4A was correlated with the degree of capsule invasion,lymph node metastasis and differentiation(P<0.05).Kaplan-Meier survival curve analysis showed that the 5-year cumulative survival rate of patients with high circKIF4A expression was lower than those with low circKIF4A expression,and the difference was statistically significant(χ^(2)=11.368,P=0.001).Multivariate analysis showed that envelope invasion,degree of differentiation,lymph node metastasis and circKIF4A expression level were the influencing factors for poor prognosis of thyroid cancer patients at 5 years after surgery(P<0.05).Conclusion circKIF4A is highly expressed in thyroid cancer tissues,which is related to the clinicopathological features and 5-year postoperative survival of thyroid cancer patients,and may be used as a potential prognostic marker for thyroid cancer.