Efficacy and Safety of Trastuzumab Deruxtecan in Patients with HER2-Low Advanced Breast Cancer and Brain Metastases: A Multicenter Retrospective Study

注册号:

Registration number:

ChiCTR2500113697 

最近更新日期:

Date of Last Refreshed on:

2025-12-02 10:51:08 

注册时间:

Date of Registration:

2025-12-02 00:00:00 

注册号状态:

预注册

Registration Status:

Prospective registration

注册题目:

德曲妥珠单抗在HER-2低表达晚期乳腺癌伴脑转移患者中的疗效与安全性: 一项多中心回顾性研究

Public title:

Efficacy and Safety of Trastuzumab Deruxtecan in Patients with HER2-Low Advanced Breast Cancer and Brain Metastases: A Multicenter Retrospective Study

注册题目简写:

English Acronym:

研究课题的正式科学名称:

德曲妥珠单抗在HER-2低表达晚期乳腺癌伴脑转移患者中的疗效与安全性: 一项多中心回顾性研究

Scientific title:

Efficacy and Safety of Trastuzumab Deruxtecan in Patients with HER2-Low Advanced Breast Cancer and Brain Metastases: A Multicenter Retrospective Study

研究课题代号(代码):

Study subject ID:

在二级注册机构或其它机构的注册号:

The registration number of the Partner Registry or other register:

申请注册联系人:

王少军 

研究负责人:

王少军 

Applicant:

Shaojun Wang 

Study leader:

Shaojun Wang 

申请注册联系人电话:

Applicant telephone:

+86 151 4715 5663

研究负责人电话:

Study leader's telephone:

+86 471 345 1027

申请注册联系人传真 :

Applicant Fax:

研究负责人传真:

Study leader's fax:

申请注册联系人电子邮件:

Applicant E-mail:

15147155663@163.com

研究负责人电子邮件:

Study leader's E-mail:

15147155663@163.com

申请单位网址(自愿提供):

Applicant website(voluntary supply):

研究负责人网址(自愿提供):

Study leader's website(voluntary supply):

申请注册联系人通讯地址:

中国内蒙古呼和浩特的回民区通道北路1号

研究负责人通讯地址:

中国内蒙古呼和浩特的回民区通道北路1号

Applicant address:

No.1 North Tongdao Street, Hui Min District, Hohhot, Inner Mongolia, China

Study leader's address:

No.1 North Tongdao Street, Hui Min District, Hohhot, Inner Mongolia, China

申请注册联系人邮政编码:

Applicant postcode:

研究负责人邮政编码:

Study leader's postcode:

申请人所在单位:

内蒙古医科大学附属医院

Applicant's institution:

The Affiliated Hospital of Inner Mongolia Medical University

研究负责人所在单位:

内蒙古医科大学附属医院

Affiliation of the Leader:

The Affiliated Hospital of Inner Mongolia Medical University

是否获伦理委员会批准:

是/Yes

Approved by ethic committee:

Yes

伦理委员会批件文号:

Approved No. of ethic committee:

S.2025388

伦理委员会批件附件:

Approved file of Ethical Committee:

查看附件View

批准本研究的伦理委员会名称:

内蒙古医科大学附属医院伦理委员会

Name of the ethic committee:

Ethics Committee of The Affiliated Hospital of Inner Mongolia Medical University

伦理委员会批准日期:

Date of approved by ethic committee:

2025-11-10 00:00:00

伦理委员会联系人:

任权

Contact Name of the ethic committee:

Quan Ren

伦理委员会联系地址:

中国内蒙古呼和浩特的回民区通道北路1号

Contact Address of the ethic committee:

No.1 North Tongdao Street, Hui Min District, Hohhot, Inner Mongolia, China

伦理委员会联系人电话:

Contact phone of the ethic committee:

+86 471 345 1027

伦理委员会联系人邮箱:

Contact email of the ethic committee:

研究实施负责(组长)单位:

内蒙古医科大学附属医院

Primary sponsor:

The Affiliated Hospital of Inner Mongolia Medical University

研究实施负责(组长)单位地址:

中国内蒙古呼和浩特的回民区通道北路1号

Primary sponsor's address:

No.1 North Tongdao Street, Hui Min District, Hohhot, Inner Mongolia, China

试验主办单位(项目批准或申办者):

Secondary sponsor:

国家:

中国

省(直辖市):

内蒙古自治区

市(区县):

呼和浩特

Country:

China

Province:

Inner Mongolia Autonomous Region

City:

Hohhot

单位(医院):

内蒙古医科大学附属医院

具体地址:

中国内蒙古呼和浩特的回民区通道北路1号

Institution
hospital:

The Affiliated Hospital of Inner Mongolia Medical University

Address:

No.1 North Tongdao Street, Hui Min District, Hohhot, Inner Mongolia, China

经费或物资来源:

自筹或者基金资助

Source(s) of funding:

Self-funded or grant-funded

Target disease:

Advanced breast cancer with low HER-2 expression and brain metastasis

Target disease code:

研究类型:

观察性研究

Study type:

Observational study

研究所处阶段:

回顾性研究 

Study phase:

Retrospective study

研究设计:

单臂 

Study design:

Single arm 

研究目的:

主要研究目标:评估T-DXd在HER2低表达晚期乳腺癌伴脑转移患者中的颅内客观缓解率(基于神经肿瘤标准);次要研究目标:评估颅内和全身的无进展生存期、总生存期;描述T-DXd在该人群中的安全性特征;探索不同生物标志物亚组的疗效差异。  

Objectives of Study:

Primary study objective: To evaluate the intracranial objective response rate of T-DXd in patients with HER2-low advanced breast cancer and brain metastases (based on Response Assessment in Neuro-Oncology criteria); Secondary study objectives: To evaluate intracranial and systemic progression-free survival and overall survival; To describe the safety profile of T-DXd in this patient population; To explore efficacy differences across different biomarker subgroups.

药物成份或治疗方案详述:

 

Description for medicine or protocol of treatment in detail:

 

纳入标准:

(1)年龄≥18岁; (2)病理诊断为明确的乳腺癌癌患者; (3)最近一次病理证实为HER2低表达(IHC 1+或IHC 2+且ISH阴性); (4)T-DXd治疗前有稳定性或活跃的脑转移(未治疗或进展后),并且没有立即局部治疗的指征; (5)根据神经肿瘤学脑转移(RANO-BM)标准可测量的脑病变; (6)既往在转移性疾病阶段接受过至少一种系统治疗的,或在辅助化疗期间或完成辅助化疗之后6个月内复发的患者; (7)接受T-DXd治疗至少1个周期; (8)至少三个月的预期寿命。

Inclusion criteria

(1) Age >= 18 years; (2) Pathologically confirmed diagnosis of breast cancer; (3) Most recent pathological confirmation of HER2-low expression (IHC 1+ or IHC 2+ with negative ISH); (4) Presence of stable or active brain metastases (untreated or progressive) prior to T-DXd treatment, with no indication for immediate local therapy; (5) Measurable brain lesions according to the Response Assessment in Neuro-Oncology Brain Metastases (RANO-BM) criteria; (6) Patients who have previously received at least one line of systemic therapy for metastatic disease, or those who relapsed during or within 6 months after completing adjuvant chemotherapy; (7) Received at least one cycle of T-DXd treatment; (8) Life expectancy of at least three months.

排除标准:

(1)治疗疗效信息或不良反应信息缺失; (2)合并影响患者生存时间的原发恶性肿瘤; (3)T-DXd治疗前影像显示疑似间质性肺部疾病; (4)T-DXd治疗期间合并其它抗肿瘤治疗; (5)有软脑膜病变; (6)有临床重大的心脏、肝脏/胆道或肾脏疾病。

Exclusion criteria:

(1) Missing information on treatment efficacy or adverse reactions; (2) Coexisting primary malignancy that affects patient survival time; (3) Imaging findings suggestive of interstitial lung disease prior to T-DXd treatment; (4) Concomitant other antitumor therapies during T-DXd treatment; (5) Presence of leptomeningeal disease; (6) Clinically significant cardiac, hepatic/biliary, or renal diseases.

研究实施时间:

Study execute time:

From 2026-01-01 00:00:00 To 2027-12-31 00:00:00  

征募观察对象时间:

Recruiting time:

From 2026-01-01 00:00:00 To 2026-12-31 00:00:00  

干预措施:

Interventions:

组别:

试验组

样本量:

46

Group:

Experimental group

Sample size:

干预措施:

德曲妥珠单抗5.4 mg/kg静脉输注

干预措施代码:

Intervention:

T-DXd, 5.4mg/kg IV

Intervention code:

研究实施地点:

Countries of recruitment and research settings:

国家:

中国

省(直辖市):

北京 

市(区县):

 

Country:

China 

Province:

Beijing 

City:

 

单位(医院):

中国人民解放军总医院 

单位级别:

三甲 

Institution
hospital:

Chinese People's Liberation Army General Hospital

Level of the institution:

Tertiary A

国家:

中国

省(直辖市):

河北  

市(区县):

 

Country:

China 

Province:

Hebei 

City:

 

单位(医院):

河北医科大学第四医院  

单位级别:

三甲 

Institution
hospital:

The Fourth Hospital of Hebei Medical University

Level of the institution:

Tertiary A

国家:

中国

省(直辖市):

内蒙古自治区 

市(区县):

 

Country:

China 

Province:

Inner Mongolia Autonomous Region 

City:

 

单位(医院):

内蒙古自治区人民医院 

单位级别:

三甲 

Institution
hospital:

Inner Mongolia Autonomous Region People's Hospital

Level of the institution:

Tertiary A

测量指标:

Outcomes:

指标中文名:

T-DXd在HER2低表达晚期乳腺癌伴脑转移患者中的颅内客观缓解率

指标类型:

主要指标

Outcome:

Intracranial objective response rate of T-DXd in patients with HER2-low advanced breast cancer and brain metastases

Type:

Primary indicator

测量时间点:

T-DXd使用每2-3个周期

测量方法:

肿瘤影像学检查(RECIST 1.1)(头部核磁)

Measure time point of outcome:

T-DXd administration every 2-3 cycles

Measure method:

Tumor Imaging (RECIST 1.1) (brain MRI)

采集人体标本:

Collecting sample(s)
from participants:

标本中文名:

组织:

Sample Name:

None

Tissue:

人体标本去向

其它  

说明

Fate of sample:

0thers  

Note:

征募研究对象情况:

Recruiting status:

尚未开始

Not yet recruiting

年龄范围:

Participant age:

最小 Min age 18 years
最大 Max age years

性别:

女性

Gender:

Female

随机方法(请说明由何人用什么方法产生随机序列):

Randomization Procedure (please state who generates the random number sequence and by what method):

None

是否公开试验完成后的统计结果:

Calculated Results after the Study Completed public access:

不公开/Private

盲法:

Blinding:

None

是否共享原始数据:

IPD sharing

No

共享原始数据的方式(说明:请填入公开原始数据日期和方式,如采用网络平台,需填该网络平台名称和网址):

The way of sharing IPD”(include metadata and protocol, If use web-based public database, please provide the url):

None

数据采集和管理(说明:数据采集和管理由两部分组成,一为病例记录表(Case Record Form, CRF),二为电子采集和管理系统(Electronic Data Capture, EDC),如ResMan即为一种基于互联网的EDC:

采用电子采集和管理系统

Data collection and Management (A standard data collection and management system include a CRF and an electronic data capture:

Use electronic data capture, EDC

数据与安全监察委员会:

Data and Safety Monitoring Committee:

有/Yes

注册人:

Name of Registration:

 2025-12-02 10:51:02