Clinical Significance of HER2 Positive Circulating Tumor Cells(CTCs) in the Peripheral Blood of Patients With Advanced Gastric Cancer
Inclusion Criteria:
- Having signed informed consent
- Age≥ 18 years old
- HER2 overexpression confirmed by IHC or ISH (IHC 3+,or IHC2+/ISH+)
- Histologically confirmed gastric adenocarcinoma
- Unresectable recurrent or metastatic disease
- Previous neo-adjuvant or adjuvant treatment for gastric cancer, if applicable, more
than 6 months
- Measurable disease according to the RECIST criteria
- Karnofsky performance status ≥70
- Life expectancy of ≥3 month
- No prior radiotherapy except radiotherapy at non-target lesion of the study more than
4 weeks
- ALT and AST<2.5 times ULN (≤5 times ULN in patients with liver metastases)
- Serum albumin level ≥3.0g/dL
- Serum AKP < 2.5 times ULN
- Serum creatinine
- Bilirubin level < 1.5 ULN
- WBC>3,000/mm3, absolute neutrophil count ≥2000/mm3, platelet>100,000/mm3, Hb>9g/dl
Exclusion Criteria:
- Previous systemic therapy for metastatic gastric cancer
- Surgery (excluding diagnostic biopsy) within 4 weeks prior to study entry
Contraindications of nuclear magnetic resonance image such as fitment of cardiac
pacemaker , nerve stimulator, or aneurysm clip, and metallic foreign body in eye ball
and so on.
- Allergic constitution or allergic history to protium biologic product or any
investigating agents.
- Severe heart disease or such history as recorded congestive heart failure,
uncontrolled cardiac arrhythmia, angina pectoris needing medication, cardiac valve
disease, severe abnormal ECG findings, cardiac infarction , or retractable
hypertension.
- Pregnancy or lactation period
- Other previous malignancy within 5 year, except non-melanoma skin cancer
- Legal incapacity