Conversion Therapy of Sintilimab in Combination With Apatinib and Chemotherapy in Stage IV Gastric Cancer
Gastric Cancer Stage IV
About this trial
This is an interventional treatment trial for Gastric Cancer Stage IV focused on measuring PD-1 inhibitor, conversion therapy
Eligibility Criteria
Inclusion Criteria:
- 18-70 years old;
- gastroscopy and pathology (histologically/cytologically ) confirmed local advanced or oligo-metastatic gastric adenocarcinoma;
- unresectable;
- ≥3m life expectancy;
- must have at least 1 measurable lesion using RECIST v1.1 criteria;
- adequate organ function
- pregnant test negative of females of childbearing potential , and willing to use adequate contraception
- written Informed Consensus Form
Exclusion Criteria:
- prior use of any checkpoint inhibitor treatment, including with no limited to PD-1, programmed cell death ligand-1(PDL-1), CTLA4 etc;
- patients with central nervous system, lung, or bone metastasis;
- Her 2 positive with willing to use herceptin treatment;
- prior active autoimmune disease or history of autoimmune disease;
- patients with other malignant tumor
- clinically significant cardiovascular and cerebrovascular diseases, including but not limited to severe acute myocardial infarction within 6 months before enrollment, unstable or severe angina, or coronary artery bypass surgery, Congestive heart failure (New York heart association (NYHA) class > 2), ventricular arrhythmia which need medical intervention, left ventricular ejection fraction(LVEF) < 50%;
- not controlled hypertension;
- prior systemic treatment to metastatic disease;
- previous digestive tract bleeding history within 3 months or evident gastrointestinal bleeding tendency;
- patients with or previous with serious hemorrhage ;
- active infection or an unexplained fever;
- objective evidence of previous or current pulmonary fibrosis history, interstitial pneumonia, pneumoconiosis, radiation pneumonitis, drug-related pneumonia, pulmonary function damaged seriously etc.
- history of immunodeficiency including seropositivity for human immunodeficiency virus (HIV), or other acquired or congenital immune-deficient disease, or active hepatitis ;
- patients who may receive vaccination during study period;
- mental disorders history, or psychotropic drug abuse history;
- unable to orally administration;
Sites / Locations
- Department of Gastric Surgery, Tianjin Medical University Cancer Institute and Hospital
Arms of the Study
Arm 1
Experimental
treatment
Eligible patients will be given sintilimab(200mg iv, day 1), apatinib(250mg,once daily), S-1 (60mg, twice daily, day1-14) and nab-paclitaxel(without peritoneal metastases: 260 mg/m^2 iv for 3h; with peritoneal metastases: 200mg/m^2 iv plus 60mg/m^2 ip; day 1) every 3 weeks for at least 3 cycles. The feasibility of surgery will be evaluated by a multidisciplinary team every 2-4 cycles. Patients assessed as inoperable will be allowed to continue maintenance therapy with the original regimen until disease progression or intolerable toxicity. For patients assessed as operable, apatinib will be discontinued and one more cycle of sintilimab combined with S-1 and nab-paclitaxel will be administered; radical surgery will be performed within 2-4 weeks after the end of treatment. Safety run-in stage will be set in the first 6 patients to determine the safety. The study will be terminated if dose-limiting toxicities (DLTs) occur in more than 2 patients.