Gastric Carcinoma
Conditions
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.
Interventions
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
Sponsors
Study design
Eligibility
Inclusion criteria
* 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
Exclusion criteria
* 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
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Progression-Free Survival | 24 months |
Secondary
| Measure | Time frame |
|---|---|
| Objective Response Rate | 24 months |
| Disease Control Rate | 24 months |
| Overall Survival | up to 5 years |
| Patient-Reported Outcomes | 24 months |
| Adverse Events | 24 months |
| Duration of Response | 24 months |
Countries
China