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Meta-analysis of randomized trials: evaluation of benefit from gemcitabine-based combination chemotherapy applied in advanced pancreatic cancer

Open access
Heinemann, Volker, Boeck, Stefan, Hinke, Axel, Labianca, Roberto, Louvet, Christophe·2008·BMC Cancer

Abstract

BACKGROUND: Single-agent gemcitabine (GEM) is a standard treatment for advanced and metastatic pancreatic cancer. This study examines the question whether GEM-based combination chemotherapy can further improve treatment efficacy. METHODS: A meta-analysis was performed to evaluate randomized trials comparing GEM versus GEM+X (X = cytotoxic agent). Fifteen trials including 4465 patients were eligible for an analysis of overall survival, the primary end-point of this investigation. RESULTS: The meta-analysis revealed a significant survival benefit for GEM+X with a pooled hazard ratio (HR) of 0.91 (95% CI: 0.85 - 0.97, p = 0.004). The overall test for heterogeneity resulted in p = 0.82 (I2 = 0%). The analysis of platinum-based combinations indicated a HR of 0.85 (95% CI: 0.76 - 0.96, p = 0.010), while for fluoropyrimidine-based combinations the HR was 0.90 (95% CI: 0.81 - 0.99, p = 0.030). No risk reduction was observed in the group of trials combining GEM with irinotecan, exatecan or pemetrexed (HR = 0.99). A meta-analysis of the trials with adequate information on baseline performance status (PS) was performed in five trials with 1682 patients. This analysis indicated that patients with a good PS had a marked survival benefit when receiving combination chemotherapy (HR = 0.76; 95% CI: 0.67 - 0.87; p < 0.0001). By contrast, application of combination chemotherapy to patients with an initially poor PS appeared to be ineffective (HR = 1.08; 95% CI: 0.90 - 1.29, p = 0.40). CONCLUSION: The meta-analysis of randomized trials indicated a significant survival benefit when GEM was either combined with platinum analogs or fluoropyrimidines. Based on a preliminary subgroup analysis (representing 38% of all patients included in this meta-analysis), pancreatic cancer patients with a good PS appear to benefit from GEM-based cytotoxic combinations, whereas patients with a poor PS seem to have no survival benefit from combination chemotherapy.

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Metadata

Authors
Heinemann, V., Boeck, S., Hinke, A., Labianca, R., & Louvet, C.
Venue
BMC Cancer
Published
2008-03-28
Volume
8
Issue
1
Pages
82-82
ISSN
1471-2407 (ISSN-L)
OpenAlex
W1974922522
Cited by
434
References
36
FWCI
2.07
Type
journal article
Language
en
Open access
gold

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Heinemann, V., Boeck, S., Hinke, A., Labianca, R., & Louvet, C. (2008). Meta-analysis of randomized trials: evaluation of benefit from gemcitabine-based combination chemotherapy applied in advanced pancreatic cancer. BMC Cancer. https://doi.org/10.1186/1471-2407-8-82

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