国际肿瘤学杂志 ›› 2023, Vol. 50 ›› Issue (5): 263-267.doi: 10.3760/cma.j.cn371439-20230310-00053

• 论著 • 上一篇    下一篇

三阴性乳腺癌中PIK3CA基因状态与临床特征及预后的关系

李彬1, 张桂芳2(), 周林静2, 杨小冬2, 何秋立2, 贾思思2, 黄普超2, 梁嘉欣1   

  1. 1新乡医学院第四临床学院,新乡 453000
    2河南省新乡市中心医院东院区肿瘤内科,新乡 453000
  • 收稿日期:2023-03-10 修回日期:2023-04-12 出版日期:2023-05-08 发布日期:2023-06-27
  • 通讯作者: 张桂芳 E-mail:xxchzhangguifang@126.com
  • 基金资助:
    河南省新乡市科技攻关项目(GG2019027)

Relationships between PIK3CA gene status and clinical features and prognosis in triple-negative breast cancer

Li Bin1, Zhang Guifang2(), Zhou Linjing2, Yang Xiaodong2, He Qiuli2, Jia Sisi2, Huang Puchao2, Liang Jiaxin1   

  1. 1The Fourth Clinical College, Xinxiang Medical University, Xinxiang 453000, China
    2Department of Oncology, East Hospital of Xinxiang Central Hospital of Henan Province, Xinxiang 453000, China
  • Received:2023-03-10 Revised:2023-04-12 Online:2023-05-08 Published:2023-06-27
  • Contact: Zhang Guifang E-mail:xxchzhangguifang@126.com
  • Supported by:
    Science and Technology Project of Xinxiang of Henan Province(GG2019027)

摘要:

目的 检测三阴性乳腺癌(TNBC)组织中的PIK3CA状态,分析PIK3CA突变与临床特征的关系及对预后的影响。方法 收集2016年1月1日至2018年12月31日河南省新乡市中心医院收治的原发性TNBC患者50例,检测肿瘤组织PIK3CA突变状态,分析PIK3CA突变与TNBC患者临床特征的关系及对预后的影响。结果 50例TNBC患者中,检测到PIK3CA基因突变9例,突变频率18.0%;其中H1047R突变4例,E545K突变3例,E542K突变2例。PIK3CA基因突变与年龄(χ2=3.55,P=0.060)、肿瘤部位(χ2=1.01,P=0.315)、肿瘤大小(χ2<0.01,P>0.999)、淋巴结状态(χ2=0.76,P=0.385)、临床分期(χ2=0.65,P=0.420)、Ki-67值(χ2<0.01,P>0.999)、P53状态(χ2=0.02,P=0.894)以及人表皮生长因子受体-2(HER-2)状态(χ2=1.65,P=0.200)均无明显相关性。预后分析显示,PIK3CA野生型患者的3年无瘤生存率显著高于突变型患者(80.5%比11.1%,χ2=28.23,P<0.001)。结论 TNBC患者的PIK3CA基因突变频率较高,TNBC患者PIK3CA突变与临床病理特征均无相关性,PIK3CA基因突变可能与TNBC不良预后显著相关。

关键词: 三阴性乳腺癌, PIK3CA基因突变, 预后

Abstract:

Objective To detect the status of PIK3CA in triple-negative breast cancer (TNBC), and to analyze the relationships between PIK3CA mutation and clinical features and its impact on prognosis. Methods From January 1, 2016 to December 31, 2018, 50 patients with primary TNBC admitted to Xinxiang Central Hospital of Henan Province were collected. The PIK3CA mutation status was detected, and the relationships between PIK3CA mutation and clinical characteristics of patients with TNBC and its impact on prognosis were analyzed. Results PIK3CA gene mutation was detected in 9 of 50 TNBC patients, with a mutation frequency of 18.0%. H1047R mutation was found in 4 cases, E545K mutation in 3 cases and E542K mutation in 2 cases. PIK3CA gene mutation was not associated with age (χ2=3.55, P=0.060), tumor location (χ2=1.01, P=0.315), tumor size (χ2<0.01, P>0.999), lymph node status (χ2=0.76, P=0.385), clinical stage (χ2=0.65, P=0.420), Ki-67 value (χ2<0.01, P>0.999), P53 status (χ2=0.02, P=0.894) and human epidermal growth factor receptor-2 (HER-2) status (χ2=1.65, P=0.200). Prognostic analysis showed that 3-year disease-free survival rates of wild-type PIK3CA patients was significantly higher than that of mutant PIK3CA patients (80.5% vs. 11.1%, χ2=28.23, P<0.001). Conclusion The frequency of PIK3CA gene mutation is higher in TNBC patients. There is no correlation between PIK3CA mutation and clinicopathologic features in TNBC patients. PIK3CA gene mutation may be significantly associated with poor prognosis of TNBC patients.

Key words: Triple negative breast cancer, PIK3CA gene mutation, Prognosis