Meta-analysis of Modified FOLFIRINOX Regimens for Patients With Metastatic Pancreatic Cancer

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Abstract

Micro-Abstract:

Chemotherapy is the currently recommended first-line treatment for metastatic pancreatic cancer; however, few patients are eligible for aggressive treatment. We performed a meta-analysis with a combined sample size of 1461 patients and found that mFIO (modified FOLFIRINOX; leucovorin, 5-fluorouracil, irinotecan, oxaliplatin) regimens are associated with outcomes similar to those with regular FOLFIRINOX. The analysis results suggest that it is reasonable to consider mFIO for patients with metastatic pancreatic adenocarcinoma, increasing the patient population eligible for this regimen.

Background:

We performed a meta-analysis of previous reports evaluating the effect of mFIO (modified FOLFIRINOX; leucovorin, 5-fluorouracil, irinotecan, oxaliplatin) regimens in advanced pancreatic cancer.

Materials and Methods:

We performed a meta-analysis of reported studies in PubMed, Scopus, and Web of Science (1950–2016) in December 2016. The inclusion criteria were randomized trials, prospective or retrospective cohorts, patients with metastatic pancreatic adenocarcinoma, the use of mFIO or FOLFIRINOX (FIO) chemotherapy, and available information for ≥ 1 efficacy endpoint (response rate, progression-free survival, and/or overall survival). The outcomes were compared according to the chemotherapy regimen using a random effects model. We also performed a meta-regression analysis to evaluate the effect of dose reductions on outcomes.

Results:

Of 2525 abstracts, 32 were considered eligible. Modifications in the FIO regimen included omission of the 5-fluorouracil bolus and/or dose reductions in infusional 5-fluorouracil, irinotecan, and/or oxaliplatin. mFIO was not associated with inferior response rates (32% vs. 33%; P = .879), lower rates of survival at 11 months (47% vs. 50%; P = .38), or lower 6-month progression-free survival rates (47% vs. 53%; P = .38). The meta-regression of the percentage of dose reduction failed to show any association.

Conclusion:

The results of the present meta-analysis with a combined sample size of 1461 patients suggest that it is reasonable to consider mFIO regimens for patients with metastatic pancreatic adenocarcinoma.

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