A Study of Disitamab Vedotin Combined With Tislelizumab and Chemotherapy Versus Tislelizumab Combined With Chemotherapy in HER2-Low Advanced Gastric or Gastroesophageal Junction Adenocarcinoma
A Phase III, Randomized Trial Comparing RC48 Plus Chemotherapy and Tislelizumab With Tislelizumab Plus Chemotherapy as First-line Treatment in Participants With HER2 Low Advanced Gastric or Gastrioesophageal Junction Adenocarcinoma (RC48-C039)
1 other identifier
interventional
616
1 country
1
Brief Summary
The purpose of this study is to evaluate the efficacy and safety of \*\*Disitamab Vedotin combined with Tislelizumab and CAPOX versus Tislelizumab combined with CAPOX\*\* as first-line treatment for patients with HER2-low advanced gastric or gastroesophageal junction adenocarcinoma.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P75+ for phase_3
Started May 2025
Longer than P75 for phase_3
1 active site
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
Click on a node to explore related trials.
Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
April 17, 2025
CompletedFirst Posted
Study publicly available on registry
April 25, 2025
CompletedStudy Start
First participant enrolled
May 15, 2025
CompletedPrimary Completion
Last participant's last visit for primary outcome
May 15, 2028
ExpectedStudy Completion
Last participant's last visit for all outcomes
May 15, 2030
April 25, 2025
April 1, 2025
3 years
April 17, 2025
April 23, 2025
Conditions
Outcome Measures
Primary Outcomes (1)
Progression-Free Survival
24 months
Secondary Outcomes (6)
Overall Survival
up to 5 years
Objective Response Rate
24 months
Disease Control Rate
24 months
Duration of Response
24 months
Patient-Reported Outcomes
24 months
- +1 more secondary outcomes
Study Arms (2)
Tislelizumab combined with CAPOX
ACTIVE COMPARATORDisitamab Vedotin Combined with Tislelizumab and CAPOX
EXPERIMENTALInterventions
Disitamab Vedotin: 2.5 mg/kg, IV, D1, Q2W; Tislelizumab: 200 mg, IV, D1, Q3W Oxaliplatin: 100 mg/m², IV, D1, Q3W; Capecitabine: 750 mg/m², po, BID, D1-D14, Q3W
Tislelizumab: 200 mg, IV, D1, Q3W Oxaliplatin: 130 mg/m², IV, D1, Q3W; Capecitabine: 1000 mg/m², po, BID, D1-D14, Q3W
Eligibility Criteria
You may qualify if:
- Voluntarily consent to participate in the study and sign the informed consent form
- Expected survival period \>12 weeks
- ECOG Performance Status 0 or 1
- Histologically confirmed unresectable locally advanced, metastatic, or recurrent gastric or gastroesophageal junction adenocarcinoma
- No prior systemic therapy for locally advanced or metastatic gastric cancer
- HER2-low expression
- At least one assessable lesion according to RECIST v1.1 criteria
- Adequate organ function
- For female subjects: They should be surgically sterilized, postmenopausal, or agree to use a medically approved contraceptive method (such as an intrauterine device, contraceptive pill, or condom) during the study treatment period and for 6 months after the end of the study treatment. A blood pregnancy test must be negative within 7 days before the study medication is administered, and they must not be breastfeeding
- For male subjects: They should be surgically sterilized or agree to use a medically approved contraceptive method during the study treatment period and for 6 months after the end of the study treatment
- Able to understand the study requirements and willing to comply with the study and follow-up procedures
You may not qualify if:
- Presence of central nervous system (CNS) metastasis and/or carcinomatous meningitis
- Peripheral neuropathy \> Grade 1
- Tumor lesions with a tendency to bleed
- Uncontrolled diarrhea
- Bone metastases with a risk of paraplegia
- Past or current interstitial lung disease, or presence of drug-induced pneumonia, radiation pneumonia, or severely impaired lung function
- Other malignancies within 5 years before the first dose, except for those expected to be cured with treatment (e.g., adequately treated thyroid cancer, cervical carcinoma in situ, basal or squamous cell skin cancer, or ductal carcinoma in situ of the breast treated with curative surgery)
- Pregnant or breastfeeding women
Contact the study team to confirm eligibility.
Sponsors & Collaborators
Study Sites (1)
Beijing Cancer Hospital
Beijing, BJ-Beijing, 100021, China
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Central Study Contacts
Study Design
- Study Type
- interventional
- Phase
- phase 3
- Allocation
- RANDOMIZED
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- PARALLEL
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
April 17, 2025
First Posted
April 25, 2025
Study Start
May 15, 2025
Primary Completion (Estimated)
May 15, 2028
Study Completion (Estimated)
May 15, 2030
Last Updated
April 25, 2025
Record last verified: 2025-04