621例乳腺浸润性导管癌患者分子分型与临床病理学特征的关系

目的 探讨新疆地区乳腺浸润性导管癌不同分子亚型的分布,并研究分子亚型与各临床病理学特征的关系。方法 收集2013年1月—2014年1月明确诊断为乳腺浸润性导管癌病例621例,根据雌激素受体(ER)、孕激素受体(PR)、表皮生长因子受体-2(HER-2)和Ki-67的表达情况,把所有病例划分为Luminal A型、Luminal B型、HER-2过表达型及Basal-like型,然后结合临床病理特征进行比较统计。结果 621例中Luminal B型占53.1%,Luminal A型、HER-2过表达型和Basal-like型分别占14.5%、15.9%、16.4%。各分子亚型与肿瘤大小、病理组织学分级、肿瘤病理分期、ER状态、PR状态、HER-2状态均有关(P＜0.05),与年龄、淋巴结状态无关(P＞0.05)。结论 浸润性导管癌患者各分子亚型与其临床病理学特征有密切关系,分子分型有利于指导临床个体化治疗方案的制定。

Correlations between molecular subtypes and clinical pathological features in 621 breast invasive ductal carcinoma patients

Objective To investigate the distribution of breast invasive ductal carcinoma with different molecular subtypes,and to study the relationship between molecular subtypes and clinical pathological features in Xinjiang area.Methods A total of 621 patients with IDC from January 2013 to January 2014 was classified into Luminal A type,Luminal B type,HER-2 overexpression type and Basal-like type,different molecular subtypes according to the estrogen receptor(ER),progesterone receptor(PR),epidermal growth factor receptor-2(HER-2)and Ki-67,and compared the statistics combining with the clinical pathological characteristics of IDC.Results The result showed that Luminal B type accounted for 53.1%,Luminal A type,HER-2 overexpression type and Basal-like type accounted for 14.5%,15.9%,16.4%,respectively.There were significant differences between the molecular subtypes and tumor size,histological grade,tumor pathological stage,the expression of ER,PR and HER-2(P＜0.05 for all).There were no correlations between the molecular subtypes and age,as well as lymph node metastasis(P＞0.05).Conclusion There is a close relationship between invasive ductal carcinoma of different molecular subtypes and clinical pathological characteristics.The molecular subtypes are beneficial to treatment guidelines for clinical individual.