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Fruquintinib and Raltitrexed Versus Fruquintinib Monotherapy in Advanced Colorectal Cancer

ABSTRACT: A randomized, controlled phase II clinical trial of Fruquintinib combined with Raltitrexed versus Fruquintinib monotherapy in patients with advanced colorectal cancer who had failed second-line or above standard chemotherapy

DISEASE(S): Advanced Colorectal Carcinoma,Colorectal Neoplasms

PROVIDER: 2354180 | ecrin-mdr-crc |

REPOSITORIES: ECRIN MDR

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Project description:Raltitrexed is a potent thymidylate synthase (TS) inhibitor. Conversely to 5-fluorouracil (5FU), raltitrexed can be administered safely in patients with cardiovascular disease, as well as in patients with dihydropyrimidine dehydrogenase deficit. Since raltitrexed is administered in 15-minutes infusion, complications related to continuous infusion can be avoided, and it becomes a potential good candidate for locoregional treatments as hepatic intra-arterial or intra-peritoneal infusion. Despite these potential benefits over 5FU, clinical trials failed in their temptation to replace the 5FU in colorectal cancer patients, mainly due to raltitrexed toxicity at 3mg/m2 every 3 weeks. Oxaliplatin has demonstrated a synergic effect when combined with TS inhibitors, and its association with raltitrexed was evaluated at 130mg/m2 of oxaliplatin and 3mg/m2 of raltitrexed, every 3 weeks. Actually, one of the first-line standard regimens in metastatic colorectal cancer patients is the biweekly FOLFOX (85mg/m2 of oxaliplatin, and infusional 5FU) plus bevacizumab regimen, since a significant progression-free survival (PFS) benefit was observed over FOLFOX plus placebo. Biweekly administration of raltitrexed at 2mg/m2 demonstrated a favorable toxicity profile even in patients aged >65 years. Besides, the association of raltitrexed, oxaliplatin and bevacizumab seems safe. Then, the investigators decided to perform a randomized pharmacokinetic comparative study between biweekly TOMOX (raltitrexed 2 mg/m2 and oxaliplatin 85mg/m2) and triweekly TOMOX (raltitrexed 3 mg/m2 and oxaliplatin 130mg/m2) regimens in metastatic colorectal cancer patients, in a "ping-pong" crossover strategy to reduce the intra-individual variability. Bevacizumab was allowed at the dose of 5mg/kg or 7.5mg/kg, in biweekly and triweekly schedules, respectively. The secondary end-points were, objective response rate evaluated by RECIST 1.1 criteria, PFS, overall survival (OS), toxicity, and the comparison of toxicity between two arms for the first 2 cycles.

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Fruquintinib and Raltitrexed Versus Fruquintinib Monotherapy in Advanced Colorectal Cancer

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