目的 探讨WHO(2020)女性生殖系统肿瘤分子分型在子宫内膜癌(endometrial cancer,EC)中的临床应用及其意义.方法 收集62例EC临床资料,根据WHO(2020)女性生殖系统分子分型标准,采用免疫组化法和PCR法将EC分为4种亚型,即 POLE 突变型、错配修复缺陷型(mismatch repair deficient,MMRd)、无特异性分子谱型(no specific molecular profile,NMSP)和p53突变型,分析其与临床病理特征的关系.结果 POLE突变型3例(4.8％),MMRd型15例(24.2％),NSMP型36例(58.1％),p53突变型8例(12.9％).POLE基因突变与浸润深度、组织学分级、脉管侵犯、淋巴结转移和FIGO分期,差异均无统计学意义(P＞0.05).15例MMRd型患者中,FIGOⅡ+Ⅲ期患者的比例明显增加,其中1例p53蛋白过表达,2例均完全失表达.36例NSMP型患者与组织学低级别(Grade Ⅰ+Ⅱ)有关(P＜0.05),与其它临床病理特征均无关(P＞0.05);8例p53突变型患者与组织学高级别(GradeⅢ级)有关(P＜0.05);淋巴结转移、FIGO Ⅱ+Ⅲ期明显增加,差异均无统计学意义(P＞0.05).结论 分子分型在EC的治疗中具有重要应用价值,与POLE基因突变型和NSMP型相比,MMRd型和p53突变型患者预后较差.
Application of WHO molecular classification in endometrial cancer(2020)and its clinicopathological significance
Purpose To explore the application and clini-copathological significance of molecular classification in endome-trial cancer(EC)of WHO(2020)tumors of the female repro-ductive system.Methods Sixty-two EC patients were collected and categorized into four subgroups,namely POLE mutation type,mismatch repair deficient(MMRd)type,non-specific molecular spectrum(NMSP)type,and p53 mutation type,based on WHO molecular classification tested by PCR and im-munohistochemistry.The correlation among four molecular sub-groups and their clinicopathological features were analyzed.Re-sults The molecular classification was distributed as follows:3(4.8％)cases were POLE-mutated,15(24.2％)cases MMRd,36(58.1％)cases NSMP and 8(12.9％)cases p53 abnormal expression.There were no significant differences a-mong POLE-mutated and infiltration depth,grade,lymph vascu-lar space invasion and other pathological factors such as lymph node metastasis and FIGO stage(P＞0.05).Among 15 patients with MMRd,the proportion of FIGO stage Ⅱ+Ⅲ significantly increased.One case showed abnormal overexpression of p53 pro-tein,while two cases showed complete loss of expression in MMRd subgroup.36 cases of NSMP were associated with low histopathological grade(Grade Ⅰ+Ⅱ)(P＜0.05),and no significant differences were observed among NSMP and other clinicopathological factors(P＞0.05).The p53 abnormal ex-pression in 8 cases was related to high histopathological grade(Grade Ⅲ)(P＜0.05),and the rate of lymph node metastasis and FIGO stage Ⅱ+Ⅲ significantly increased in patients with p53 abnormal expression,and although the difference was not statistically significant(P＞0.05).Conclusion The molecu-lar subgroups of EC have certain clinical application value,the cases with MMRd and p53 abnormal expression may have poor prognosis than these with POLE-mutated and NSMP.
万方数据
维普
