DP303c in Patients With HER2-positive Advanced Breast Cancer

NCT ID: NCT05901935

Last Updated: 2023-06-13

Basic Information

• Recruitment Status: NOT_YET_RECRUITING
• Clinical Phase: PHASE3
• Total Enrollment: 420 participants
• Study Classification: INTERVENTIONAL
• Study Start Date: 2023-07-31
• Study Completion Date: 2028-07-31

Brief Summary

This is a study of DP303c in patients with HER2-positive advanced breast cancer.

Detailed Description

This is a multi-centre, randomized, open-label, controlled phase Ш clinical study to evaluate the efficacy and safety of DP303c injection versus trastuzumab combined with vinorelbine/capecitabine in the treatment of HER2-positive advanced breast cancer. Patients will be treated with DP303c injection at 3.0 mg/kg or trastuzumab combined with vinorelbine/capecitabine every 3 weeks. Patients will continue to receive treatment until disease progression, intolerable toxicity, withdrawal of informed consent, death, or any other reasons for treatment discontinuation, whichever occurs first.

Conditions

HER2-positive Advanced Breast Cancer

Study Design

• Allocation Method: RANDOMIZED
• Intervention Model: PARALLEL
• Primary Study Purpose: TREATMENT
• Blinding Strategy: NONE

Study Groups

DP303c

Eligible patients will be treated with DP303c at 3.0 mg/kg every 3 weeks.

Group Type: EXPERIMENTAL

DP303c

Intervention Type: DRUG

DP303c injection, 3.0 mg/kg, Q3W.

Trastuzumab combined with vinorelbine/capecitabine

Eligible patients will be treated with trastuzumab IV on day 1 and oral capecitabine twice daily on days 1-14 every 3 weeks, or patients will be treated with trastuzumab IV on day 1 and vinorelbine IV over on days 1 and 8 every 3 weeks.

Group Type: ACTIVE_COMPARATOR

Trastuzumab

Intervention Type: DRUG

IV, 6 mg/kg, D1, Q3W

Vinorelbine Tartrate

Intervention Type: DRUG

IV, 25 mg/m\^2，D1、D8，Q3W

Capecitabine tablets

Intervention Type: DRUG

PO 1000 mg/m\^2, bid, D1-D14, Q3W

Interventions

DP303c

DP303c injection, 3.0 mg/kg, Q3W.

Intervention Type: DRUG

Trastuzumab

IV, 6 mg/kg, D1, Q3W

Intervention Type: DRUG

Vinorelbine Tartrate

IV, 25 mg/m\^2，D1、D8，Q3W

Intervention Type: DRUG

Capecitabine tablets

PO 1000 mg/m\^2, bid, D1-D14, Q3W

Intervention Type: DRUG

Eligibility Criteria

Inclusion Criteria

1. Voluntarily agree to participate in the study and sign the informed consent;

2. Age≥18 years old;

3. Patients with unresectable locally advanced or metastatic breast cancer confirmed by histology or cytology;

4. Confirmed to be HER2 positive by central lab (HER2-positive is defined as IHC 3+ or IHC 2+ with ISH positive);

5. Received at least 2 lines of systemic therapy for unresectable locally advanced, recurrent, or metastatic diseases;

6. Radiographic evidence of disease progression confirmed by the investigator during or after the most recent systemic treatment;

7. At least one assessable lesion at the baseline;

8. The Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1;

9. Patients with adequate organ function;

10. Life expectancy ≥ 12 weeks;

11. Female and male patient of childbearing age must agree to take adequate contraceptive measures during the entire study period.

Exclusion Criteria

1. Pregnant or breastfeeding women;

2. History of any other malignant tumors within three years

3. Has not recovered from adverse reactions caused by previous anti-tumor treatments to ≤ grade 1 or baseline (refer to NCI CTCAE 5.0);

4. The presence of active inflammatory bowel disease, chronic diarrhoea, short bowel syndrome or history of other gastrointestinal diseases or treatments that may affect intestinal absorption;

5. Received systemic anti-tumor therapy within 28 days before randomization, traditional Chinese medicine treatment with tumor indications approved by the National Medical Administration (NMPA) and palliative radiotherapy within 2 weeks before randomization;

6. Major organ surgery (excluding needle biopsy) within 28 days before randomization;

7. The cumulative amount of previous exposure to anthracyclines has reached the dosage;

8. Untreated (including baseline findings) or unstable cerebral parenchymal metastasis, spinal cord metastasis or compression, and cancerous meningitis.

9. History of LVEF < 40%, symptomatic congestive heart failure (CHF),.

10. Serious or uncontrolled cardiovascular disease;

11. History of (non-infectious) interstitial lung disease/pneumonitis requiring steroid hormone therapy;

12. Patients who currently have corneal diseases that require medication or surgical intervention;

13. Peripheral neuropathy ≥ grade 3 (refer to NCI CTCAE 5.0);

14. Active infections requiring intravenous antibiotics, antivirals, or antifungals within 2 weeks before randomization;

15. Active hepatitis B or C;

16. History of immunodeficiency diseases, including human immunodeficiency virus (HIV) positive;

17. Known hypersensitivity or contraindication to the active ingredients or excipients of the study drugs;

18. Treated with strong CYP3A inhibitors or strong CYP3A inducers before randomization;

19. There are other circumstances that may interfere with the subject's participation in the study procedures or do not meet the subject's maximum benefit from participating in the study or affect the study results.

• Minimum Eligible Age: 18 Years
• Eligible Sex: ALL
• Accepts Healthy Volunteers: No

Sponsors

CSPC ZhongQi Pharmaceutical Technology Co., Ltd.

INDUSTRY

Sponsor Role: lead

Responsible Party

Responsibility Role: SPONSOR

Central Contacts

Clinical Trials Information Group officer

Role: CONTACT

ctr-contact@cspc.cn

86-0311-69085587

Other Identifiers

SYSA1501-007

Identifier Type: -

Identifier Source: org_study_id