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FOLFOX* followed by FOLFIRI** or reverse sequence treatment regimen have been used as a standard treatment modality in metastatic colorectal cancer.Oxaliplatin and Irinotecan were used for advanced gastric cancer also. The investigators study was designed to evaluate the safety and efficacy of FOLFOX followed by FOLFIRI or reverse sequence treatment regimen as a first-line and second line therapy for patients with relapsed or metastatic gastric cancer similar with colorectal cancer.
*FOLFOX: oxaliplatin followed by leucovorin before bolus 5-FU followed by continuous infusion 5-FU
**FOLFIRI: irinotecan followed by leucovorin before bolus 5-FU followed by continuous infusion 5-FU
Gastric cancer remains a major public health issue, and is the fourth most common cancer and the second leading cause of cancer deaths worldwide. In Korea, gastric cancer is the most common cancer in men, the second most common cancer in women, and the second leading cause of cancer death. Despite the development of early gastric cancer detection programs, more than two-thirds of patients diagnosed with gastric cancer will develop unresectable disease. Even patients with operable tumors evidence high rates of both local and distant recurrence. In cases of advanced gastric cancer, the median survival rate is 9 to 10 months. Additionally, the overall 5-year survival rate is less than 25% in Korea and Japan.
Several combination regimens of chemotherapy for gastric cancer have been developed, but the survival advantage appears to be marginal, and no worldwide standard regimens have yet been established. Recently, a meta-analysis has been conducted to evaluate the efficacy and tolerability of chemotherapy in patients with advanced gastric cancer. The analysis of chemotherapy versus best supportive care (Hazard Ratio/HR = 0.39, confidence interval (CI) 95% 0.28-0.52) and combination versus single agent, mainly 5-Fluorouracil (5-FU), (HR = 0.83, 95% CI 0.74-0.93) demonstrated significant OS results in favour of chemotherapy and combination chemotherapy. Several chemotherapeutic drugs, including 5-fluorouracil (5-FU), mitomycin C, nitrosoureas, and doxorubicin have evidenced some level of efficacy against advanced gastric cancer. However, the majority of combination chemotherapy regimens for advanced gastric cancer have evidenced overall response rates in a range of 30 to 50% in phase II studies. Furthermore, no new regimens including the use of taxanes or irinotecan have improved either response or survivals in phase II or III trials other than docetaxel, cisplatina and infusional 5-FU (DCF) combination.
Oxaliplatin, a third-generation platinum analogue, is a diaminocyclohexane platinum which forms interstrand DNA adducts, which differ from those formed by cisplatin or carboplatin in terms of their capability to overcome resistance mechanisms. FOLFOX-4 or FOLFOX-6 combination regimen have demonstrated response rate of 38%-50% as a first-line treatment of gastric cancer.
Irinotecan (CPT-11,7-ethyl-10-[4-(1-piperidino)-1-piperidino] is a semi-synthetic plant alkaloid obtained from Camptotheca acuminate of the Nyssaceae family. After conversion to its active metabolite, SN-38, irinotecan acts by inhibiting the eukaryotic enzyme, DNA-topoisomerase I. Single-agent irinotecan has evidenced response rates of 13-23% in cases of advanced gastric cancer. 5-Fluorouracil (5-FU) and Topoisomerase I inhibitor-based regimens have demonstrated a response rate of 20-29%, and have been suggested as a first-line treatment for advanced gastric cancer.
FOLFOX followed by FOLFIRI or reverse sequence treatment regimen have been used as a standard treatment modality in metastatic colorectal cancer.
Our study was designed to evaluate the safety and efficacy of FOLFOX followed by FOLFIRI or reverse sequence treatment regimen as a first-line and second line therapy for patients with relapsed or metastatic gastric cancer similar with colorectal cancer.
Allocation: Randomized, Control: Active Control, Endpoint Classification: Efficacy Study, Intervention Model: Crossover Assignment, Masking: Open Label, Primary Purpose: Treatment
Advanced Gastric Cancer
Sung Yong Oh
Korea, Republic of
Dong-A University Hospital
Published on BioPortfolio: 2014-08-27T03:13:08-0400
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A proto-oncogene protein and member of the Wnt family of proteins. It is frequently up-regulated in human GASTRIC CANCER and is a tumor marker (TUMOR MARKERS, BIOLOGICAL) of gastric and COLORECTAL CANCER.
A deoxycytidine derivative and fluorouracil PRODRUG that is used as an ANTINEOPLASTIC ANTIMETABOLITE in the treatment of COLON CANCER; BREAST CANCER and GASTRIC CANCER.
An antineoplastic agent that is a derivative of progesterone and used to treat advanced breast cancer.
Abnormal distention of the STOMACH due to accumulation of gastric contents that may reach 10 to 15 liters. Gastric dilatation may be the result of GASTRIC OUTLET OBSTRUCTION; ILEUS; GASTROPARESIS; or denervation.
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