JSKN003 Versus Treatment Of Physician'S Choice For HER2-low, Unresectable and/or Metastatic Breast Cancer Subjects

NCT ID: NCT06079983

Last Updated: 2025-09-12

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Clinical Phase

PHASE3

Total Enrollment

400 participants

Study Classification

INTERVENTIONAL

Study Start Date

2023-12-01

Study Completion Date

2029-03-01

Brief Summary

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This study is a randomized controlled, open-label, multicenter phase III clinical study evaluating the efficacy and safety of chemotherapy selected by investigator JSKN003 s in subjects with recurrent or metastatic breast cancer who have previously failed first- or second-line chemotherapy in subjects with recurrent or metastatic breast cancer who have failed prior first- or second-line chemotherapy.

The study planned to enroll 408 subjects in a 1:1 ratio and stratified block randomization method assigned to:

* Experimental group: JSKN003 monotherapy
* Control group: investigator's chosen chemotherapy drug (capecitabine, gemcitabine, vinorelbine, docetaxel, albumin-bound paclitaxel, or eribulin) monotherapy

Detailed Description

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This study is a randomized controlled, open-label, multicenter phase III clinical study evaluating the efficacy and safety of chemotherapy selected by investigator JSKN003 s in subjects with recurrent or metastatic breast cancer who have previously failed first- or second-line chemotherapy in subjects with recurrent or metastatic breast cancer who have failed prior first- or second-line chemotherapy.

The study planned to enroll 408 subjects in a 1:1 ratio and stratified block randomization method assigned to:

* Experimental group: JSKN003 monotherapy
* Control group: investigator's chosen chemotherapy drug (capecitabine, gemcitabine, vinorelbine, docetaxel, albumin-bound paclitaxel, or eribulin) monotherapy.

Conditions

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Breast Cancer

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

A Phase 3, Multicenter, Randomized, Open-Label, Active-Controlled Trial
Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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JSKN003

Administered intravenously according to protocol.

Group Type EXPERIMENTAL

JSKN003

Intervention Type DRUG

Administered intravenously according to protocol.

The chemotherapy chosen by the investigator

The mono-chemotherapy drugs selected by the investigators included capecitabine, gemcitabine, vinorelbine, docetaxel, albumin-bound paclitaxel, or eribulin. The option should be determined before randomization.

Group Type ACTIVE_COMPARATOR

Capecitabine tablets

Intervention Type DRUG

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Gemcitabine hydrochloride for injection

Intervention Type DRUG

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Vinorelbine tartrate injection

Intervention Type DRUG

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Paclitaxel for injection (albumin-bound type)

Intervention Type DRUG

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Docetaxel injection

Intervention Type DRUG

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Eribulin mesylate injection

Intervention Type DRUG

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Interventions

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JSKN003

Administered intravenously according to protocol.

Intervention Type DRUG

Capecitabine tablets

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Intervention Type DRUG

Gemcitabine hydrochloride for injection

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Intervention Type DRUG

Vinorelbine tartrate injection

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Intervention Type DRUG

Paclitaxel for injection (albumin-bound type)

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Intervention Type DRUG

Docetaxel injection

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Intervention Type DRUG

Eribulin mesylate injection

Administered according to protocol, as one option for investigator's choice (determined before randomization).

Intervention Type DRUG

Eligibility Criteria

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Inclusion Criteria

* 1\. The subject is able to understand the informed consent form, voluntarily participate and sign the informed consent form.

2\. The subject ≥ 18 years old on the day of signing the informed consent form, male or female.

3\. Unresectable locally recurrent or metastatic breast cancer, previous histopathological reports of HER2 IHC 1+ or 2+ and ISH-, previous histopathological reports have not been diagnosed as HER2 IHC 3+ or 2+ and ISH+.

4\. Have received at least 1 to 2 lines of chemotherapy regimens for breast cancer in the relapse/metastatic stage.

5\. Willing to provide sufficient archived tumor pathology specimens for central laboratory detection of HER2 status.

6\. Documented radiographic disease progression (during or after the most recent treatment).

7\. At least one extracranial measurable lesion at baseline according to RECIST 1.1 criteria.

8\. Expected survival ≥ 3 months. 9. ECOG score of 0 or 1 within 14 days prior to administration. 10. Female subjects of childbearing potential or male subjects of fertile partner consent to use highly effective contraception from the signing of informed consent.

11\. Laboratory tests within 14 days before administration and cardiac function tests within 28 days meet the criteria.

12\. Have sufficient elution of previous treatment before administration.

Exclusion Criteria

* 1\. Untreated, or unstable brain parenchymal metastases, spinal cord metastases or compression, cancerous meningitis.

2\. Patients with only skin lesions as target lesions. 3. Those with a history of other primary malignant tumors within 5 years before administration.

4\. Selection of the control drug by the investigator who is not suitable for the protocol prescribed.

5\. Previous use of antibody conjugates containing topoisomerase I inhibitors. 6. There is a third gap fluid that cannot be controlled by drainage, etc. 7. Previous or current interstitial pneumonia/lung disease requiring systemic hormone therapy.

8\. Inability to swallow, chronic diarrhea, intestinal obstruction, or other factors that affect oral administration and absorption of the drug.

9\. Previous or current autoimmune disease. 10. Have uncontrolled comorbidities. 11. The toxicity of previous antitumor therapy has not been restored to grade ≤1 (NCI-CTCAE v5.0).

12\. History of previous immunodeficiency. 13. History of life-threatening allergic reactions or known ≥ grade 3 allergy to any component or excipient in the investigational pharmaceutical formulation.

14\. Other conditions that the investigators believe will affect the safety or adherence to drug treatment in this study, including but not limited to psychiatric disorders, alcohol or drug abuse.
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Jiangsu Alphamab Biopharmaceuticals Co., Ltd

INDUSTRY

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Erwei Song

Role: PRINCIPAL_INVESTIGATOR

Sun Yat-Sen Memorial Hospital of Sun Yat-Sen University

Jiong Wu

Role: PRINCIPAL_INVESTIGATOR

Fudan University

Locations

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Erwei Song

Guangzhou, Guangdong, China

Site Status NOT_YET_RECRUITING

Jiong Wu

Shanghai, Shanghai Municipality, China

Site Status NOT_YET_RECRUITING

Anyang Cancer Hospital

Anyang, , China

Site Status NOT_YET_RECRUITING

Affiliated Hospital of Hebei University

Baoding, , China

Site Status NOT_YET_RECRUITING

Beijing Luhe Hospital

Beijing, , China

Site Status NOT_YET_RECRUITING

Cancer Hospital, Chinese Academy of Medical Sciences

Beijing, , China

Site Status RECRUITING

Peking University Cancer Hospital

Beijing, , China

Site Status RECRUITING

The First Affiliated Hospital of China Medical University

Beijing, , China

Site Status RECRUITING

The First Medical Center of the General Hospital of the People's Liberation Army Chinese People's Liberation Army

Beijing, , China

Site Status NOT_YET_RECRUITING

Bethune First Hospital of Jilin University

Changchun, , China

Site Status NOT_YET_RECRUITING

Jilin Provincial Cancer Hospital

Changchun, , China

Site Status NOT_YET_RECRUITING

The First People's Hospital of Changde

Changde, , China

Site Status RECRUITING

Central South University Xiangya Hospital

Changsha, , China

Site Status NOT_YET_RECRUITING

Hunan Cancer Hospital

Changsha, , China

Site Status RECRUITING

Affiliated Hospital of Chengde Medical University

Chengde, , China

Site Status RECRUITING

Sichuan Cancer Hospital

Chengdu, , China

Site Status RECRUITING

Sichuan Provincial People's Hospital

Chengdu, , China

Site Status RECRUITING

West China Hospital, Sichuan University

Chengdu, , China

Site Status NOT_YET_RECRUITING

Cancer Hospital of Chongqing University

Chongqing, , China

Site Status NOT_YET_RECRUITING

The First Affiliated Hospital of Chongqing Medical University

Chongqing, , China

Site Status NOT_YET_RECRUITING

The Second Affiliated Hospital of Dalian Medical University

Dalian, , China

Site Status NOT_YET_RECRUITING

Fujian Cancer Hospital

Fuzhou, , China

Site Status NOT_YET_RECRUITING

Fujian Provincial Hospital

Fuzhou, , China

Site Status RECRUITING

Union Hospital Affiliated to Fujian Medical University

Fuzhou, , China

Site Status RECRUITING

The First Affiliated Hospital of Gannan Medical University

Ganzhou, , China

Site Status RECRUITING

Guangdong Provincial People's Hospital

Guangzhou, , China

Site Status NOT_YET_RECRUITING

Sun Yat-sen Memorial Hospital, Sun Yat-sen University

Guangzhou, , China

Site Status NOT_YET_RECRUITING

The Affiliated Hospital of Guangdong Medical University

Guangzhou, , China

Site Status RECRUITING

Sun Yat-sen University Cancer Center

Guanzhou, , China

Site Status NOT_YET_RECRUITING

Guizhou Provincial People's Hospital

Guiyang, , China

Site Status RECRUITING

The Affiliated Hospital of Guizhou Medical University

Guiyang, , China

Site Status RECRUITING

Run Run Shaw Hospital affiliated to Zhejiang University School of Medicine

Hangzhou, , China

Site Status NOT_YET_RECRUITING

The First Affiliated Hospital of Zhejiang University School of Medicine

Hanzhou, , China

Site Status NOT_YET_RECRUITING

The Second Affiliated Hospital of Zhejiang University School of Medicine

Hanzhou, , China

Site Status NOT_YET_RECRUITING

Zhejiang Cancer Hospital

Hanzhou, , China

Site Status NOT_YET_RECRUITING

Harbin Medical University Cancer Hospital

Ha’erbin, , China

Site Status NOT_YET_RECRUITING

Anhui Provincial Hospital

Hefei, , China

Site Status NOT_YET_RECRUITING

The First Affiliated Hospital of Anhui Medical University

Hefei, , China

Site Status NOT_YET_RECRUITING

The Second Affiliated Hospital of Anhui Medical University

Hefei, , China

Site Status NOT_YET_RECRUITING

The First Affiliated Hospital of University of South China

Hengyang, , China

Site Status RECRUITING

Affiliated Hospital of Inner Mongolia Medical University

Hohhot, , China

Site Status RECRUITING

Jiangmen Central Hospital

Jiangmen, , China

Site Status RECRUITING

Shandong Cancer Hospital

Jinan, , China

Site Status RECRUITING

Affiliated Hospital of Jining Medical University

Jining, , China

Site Status RECRUITING

Yunnan Cancer Hospital

Kunming, , China

Site Status NOT_YET_RECRUITING

Gansu Provincial Cancer Hospital

Lanzhou, , China

Site Status NOT_YET_RECRUITING

The First Hospital of Lanzhou University

Lanzhou, , China

Site Status RECRUITING

Linyi Cancer Hospital

Linyi, , China

Site Status NOT_YET_RECRUITING

Linyi People's Hospital

Linyi, , China

Site Status NOT_YET_RECRUITING

The First Affiliated Hospital of Henan University of Science and Technology

Luoyang, , China

Site Status RECRUITING

Meizhou People's Hospital

Meizhou, , China

Site Status RECRUITING

Jiangxi Provincial Cancer Hospital

Nanchang, , China

Site Status RECRUITING

The Third Hospital of Nanchang

Nanchang, , China

Site Status RECRUITING

Jiangsu Provincial Cancer Hospital

Nanjing, , China

Site Status RECRUITING

Jiangsu Provincial People's Hospital

Nanjing, , China

Site Status NOT_YET_RECRUITING

Cancer Hospital Affiliated to Guangxi Medical University

Nanning, , China

Site Status NOT_YET_RECRUITING

Guangxi Zhuang Autonomous Region People's Hospital

Nanning, , China

Site Status NOT_YET_RECRUITING

The Second People's Hospital of Neijiang

Neijiang, , China

Site Status RECRUITING

Affiliated Hospital of Qingdao University

Qingdao, , China

Site Status NOT_YET_RECRUITING

Fudan University Cancer Hospital

Shanghai, , China

Site Status NOT_YET_RECRUITING

Cancer Hospital Affiliated to Shantou University School of Medicine

Shantou, , China

Site Status NOT_YET_RECRUITING

The People's Hospital of Northern Guangdong

Shaoguan, , China

Site Status RECRUITING

Liaoning Cancer Hospital

Shengyang, , China

Site Status RECRUITING

Suining Central Hospital

Suining, , China

Site Status RECRUITING

The Second Affiliated Hospital of Soochow University

Suzhou, , China

Site Status NOT_YET_RECRUITING

Shanxi Bethune Hospital

Taiyuan, , China

Site Status NOT_YET_RECRUITING

Shanxi Provincial Cancer Hospital

Taiyuan, , China

Site Status NOT_YET_RECRUITING

Zhejiang Taizhou Hospital

Taizhou, , China

Site Status RECRUITING

Tianjin Cancer Hospital

Tianjin, , China

Site Status RECRUITING

Affiliated Tumor Hospital of Xinjiang Medical University

Ürümqi, , China

Site Status RECRUITING

Hubei Provincial Cancer Hospital

Wuhan, , China

Site Status RECRUITING

People's Hospital of Wuhan University

Wuhan, , China

Site Status NOT_YET_RECRUITING

Union Hospital, Tongji Medical College, Huazhong University of Science and Technology

Wuhan, , China

Site Status NOT_YET_RECRUITING

Zhongnan Hospital of Wuhan University

Wuhan, , China

Site Status NOT_YET_RECRUITING

The First Affiliated Hospital of Xi'an Jiaotong University

Xi'an, , China

Site Status NOT_YET_RECRUITING

The Second Affiliated Hospital of Xi'an Jiaotong University

Xi'an, , China

Site Status RECRUITING

The First Affiliated Hospital of Xiamen University

Xiamen, , China

Site Status RECRUITING

Xiangyang Central Hospital

Xiangyang, , China

Site Status NOT_YET_RECRUITING

Affiliated Hospital of Qinghai University

Xining, , China

Site Status RECRUITING

The First Affiliated Hospital of Xinxiang Medical University

Xinxiang, , China

Site Status RECRUITING

Affiliated Hospital of Xuzhou Medical University

Xuzhou, , China

Site Status NOT_YET_RECRUITING

Xuzhou Central Hospital

Xuzhou, , China

Site Status RECRUITING

Yongzhou Central Hospital in Hunan Province

Yongzhou, , China

Site Status RECRUITING

The First People's Hospital of Zhaoqing

Zhaoqing, , China

Site Status RECRUITING

Henan Provincial Cancer Hospital

Zhengzhou, , China

Site Status RECRUITING

The First Affiliated Hospital of Zhengzhou University

Zhengzhou, , China

Site Status NOT_YET_RECRUITING

The Affiliated Hospital of Zunyi Medical University

Zunyi, , China

Site Status RECRUITING

Countries

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China

Central Contacts

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Erwei Song

Role: CONTACT

020-81332507

Jiong Wu

Role: CONTACT

02164175590

Facility Contacts

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Erwei Song

Role: primary

Jiong Wu

Role: primary

Jing Sun

Role: primary

Hua Yang

Role: primary

Dong Yan

Role: primary

Peng Yuan

Role: primary

Huiping Li

Role: primary

Yuee Teng

Role: primary

Weihong Zhao

Role: primary

Jiuwei Cui

Role: primary

Ying Liu

Role: primary

Tao Wu

Role: primary

Juan Huang

Role: primary

Quchang Ouyang

Role: primary

Qingshan Li

Role: primary

Hao Wang

Role: primary

Jing Luo

Role: primary

Ting Luo

Role: primary

Xianjun Tang

Role: primary

Lu Gan

Role: primary

man Li

Role: primary

Fan Wu

Role: primary

Zhenhua Liu

Role: primary

Fangmeng Fu

Role: primary

Ruilian Xie

Role: primary

Ning Liao

Role: primary

Jieqiong Liu

Role: primary

Lixia Li

Role: primary

Shusen Wang

Role: primary

Yong Li

Role: primary

Yong Li

Role: primary

Xian Wang

Role: primary

Peifen Fu

Role: primary

Jian Huang

Role: primary

Hai Hu

Role: primary

Qingyuan Zhang

Role: primary

yueyin Pan

Role: primary

Jiqing Hao

Role: primary

Fufan Li

Role: primary

Qin Tong

Role: primary

Caixia Liu

Role: primary

Xiaoping Li

Role: primary

Huihui Li

Role: primary

Changping Shan

Role: primary

Jianyun Nie

Role: primary

Yingxia Tian

Role: primary

Xiaoling Ling

Role: primary

Jingfen Wang

Role: primary

Guixiang Weng

Role: primary

Xinshuai Wang

Role: primary

Jingna Wu

Role: primary

Xiaoming Zhong

Role: primary

Zhihua Li

Role: primary

Yuan Yuan

Role: primary

Yongmei Yin

Role: primary

Weimin Xie

Role: primary

Yanyan Xie

Role: primary

Xujuan Wang

Role: primary

Wenfeng Li

Role: primary

Jian Zhang

Role: primary

De Zen

Role: primary

Zhan Huang

Role: primary

Tao Sun

Role: primary

Hongwei Yang

Role: primary

Guoqin Jiang

Role: primary

Jinnan Gao

Role: primary

Fuguo Tian

Role: primary

Bojian Xie

Role: primary

Xuchen Cao

Role: primary

Bing Zhao

Role: primary

Xinhong Wu

Role: primary

Feng Yao

Role: primary

Yanxia Zhao

Role: primary

Hanjun Yu

Role: primary

Jin Yang

Role: primary

Shuqun Zhang

Role: primary

Zhong Ouyang

Role: primary

Yuehua Wang

Role: primary

Jiuda Zhao

Role: primary

Liuzhong Yang

Role: primary

Zhengqiu Zhu

Role: primary

Xiang Wang

Role: primary

Sijuan Ding

Role: primary

Jinhui Ye

Role: primary

Min Yan

Role: primary

Hong Zong

Role: primary

Taolang Li

Role: primary

Other Identifiers

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JSKN003-302

Identifier Type: -

Identifier Source: org_study_id

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