| Eligibility |
Inclusion Criteria:
- Signed inform consent form(ICF)
- Age = 18 years and = 75 years, male or female
- Histologically or cytologically documented advanced gastric/gastroesophageal junction
cancer HER2 overexpressing: IHC 3+ or IHC 2+ & ISH+ HER2 expressing: IHC2+ & ISH- or
IHC 1+ & ISH+
- Received at least one prior standard therapy
- At least one evaluable lesion according to Response Evaluation Criteria In Solid
Tumors(RECISIT) v 1.1
- Eastern Cooperative Oncology Group (ECOG) performance status of 0 or 1
- Adequate organ function
- LVEF= 50% (ECHO)
- Female patients and males with partners of childbearing potential should be using
highly effective contraceptive measures (failure rate of less than 1% per year).
Contraception should be continued for a period of 24 weeks after dosing has been
completed.
- Ability to comply with treatment, procedures and pharmacokinetics (PK) sample
collection and the required study follow-up procedures
Exclusion Criteria:
- Accepted any other anti-tumor drug therapies within 4 weeks before fist dose
- Accepted radiotherapy within 4 weeks before enrollment
- An anthracyclines antibiotic treatment was received exceeding 320 mg/m² or other
equivalent dose antharcyclines
- Subjects are eligible with clinically controlled and stable neurologic function >= 4
weeks, which is no evidence of CNS disease progression; Subjects with spinal cord
compression and cancerous meningitis are not eligible
- Pregnant or nursing females;or intend pregnancy within this study period or within 6
monthes after the end of this study
- History of immunodeficiency, including HIV positive or other acquired, congenital
immunodeficiency disease, or a history of organ transplantation
- Severe chronic and active infection, need to system antibiosis/antiviral treatment
- Cavity effusion (pleural effusion, ascites, pericardial effusion, etc.) are not well
controlled, and need locally treatment or repeated drainage
- Even with peripheral or central venous nutritional support, unintentional weight loss
=5% within 1 month before the first medication
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