Apatinib has been proved to be effective and safe among patients in advanced colorectal cancer in several trials. the investigators aimed to evaluate its efficacy and safety as the neoadjuvant therapy in real world practice, and to explore factors associated with efficacy.
Regorafenib (BAY 73-4506, commercial name Stivarga) is an oral multi-kinase inhibitor developed by Bayer which shows anti-angiogenic activity due to its dual targeted VEGFR2-TIE2 tyrosine kinase inhibition.Regorafenib demonstrated to increase the overall survival of patients with metastatic colorectal cancer and has been approved by the CFDA in 2017. Apatinib, a small molecule receptor tyrosine kinase (RTK) inhibitor, targets the intracellular domain of the VEGFR-2 ATP binding site, and is the first anti-angiogenic therapy approved by the China Food and Drug Administration in December 2014 for the treatment of metastatic gastric cancer in third-line or later treatment. It is an orally bioavailable, small molecule agent which is thought to inhibit angiogenesis in cancer cells; specifically apatinib inhibits VEGF-mediated endothelial cell migration and proliferation thus blocking new blood vessel formation in tumor tissue. It is an investigational cancer drug currently undergoing clinical trials as a potential targeted treatment for metastatic gastric carcinoma, metastatic breast cancer ,advanced hepatocellular carcinoma and advanced colorectal cancer. Apatinib are often used in advanced colorectal cancer for uses that are not within its approved indication for use.However, the knowledge gained from all uses of apatinib in this medical practice is often not realized because the data collected are not systematically characterized, aggregated, and analyzed in a way that can be relied upon to inform its further usage. In some cases, a "traditional" clinical trial may be impractical or excessively challenging to conduct. Ethical issues regarding treatment assignment, and other similar challenges, may present themsevels when developing and attempting to execute a high quality clinical trial. Analyses of real-world data(RWD), using appropriate methods, may in some cases provide similar information with comparable or even superior characteristics to information collected and analyzed through a traditional clinical trial. For example, RWD collected using a randomized exposure assignment within a registry can provide a sufficient number of patients for powered subgroup analyses. the investigators will evaluate the efficacy and safety for Apatinib combine with other chemotherapy regimens as the neoadjuvant therapy in advanced colorectal cancer in a real world study setting. This study leveraging RWD can potentially provide information on a wider patient population, thus providing information that cannot be obtained through a traditional clinical trial alone.
Study Type
INTERVENTIONAL
Allocation
NON_RANDOMIZED
Purpose
TREATMENT
Masking
NONE
Enrollment
100
FOLFOX(Oxaliplatin 85 mg/m² IV infusion and leucovorin 200 mg/m² IV infusion， followed by Fluorouracil 400 mg/m² IV bolus , followed by Fluorouracil 600 mg/m²/h IV infusionas a 22-hour continuous infusion). Repeat cycle every 2 weeks for a total of 6 cycl
Apatinib, 500mg p.o. qd, Repeat cycle every 2 weeks for a total of 6 cycles. FOLFOX regime, Repeat cycle every 2 weeks for a total of 6 cycles.
R0 ,R1 or R2 resection
Number of patients (%) with hepatic metastases R0 ,R1 or R2 resection.
Time frame: at least 4-6 weeks after the end of chemotherapy
Progression-free survival (PFS)
Progression-free survival is defined as the time from randomization to progression (RECIST v1.1 criteria) or death. Patients alive without progression will be censored at the last follow-up.
Time frame: 8 months
ORR(objective response rate)
The objective response rate (CR and PR) will be evaluated by the investigator with RECIST v1.1 criteria after 4 cycles.
Time frame: after 8 weeks
Overall survival (OS)
Overall survival is defined as the time from randomization to death any cause or last follow-up news for patients alive (censored data).
Time frame: 14 months
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