Abstract
Angiogenesis is a complex biologic process critical to growth and proliferation of colorectal cancer. The safety and efficacy of various anti-angiogenic agents have been investigated in many treatment settings. Bevacizumab, an anti-vascular endothelial growth factor agent, has efficacy in both the first-line setting and beyond progression in metastatic colorectal cancer. The decoy vascular endothelial growth factor receptor aflibercept has been approved in combination with 5-fluorouracil-, leucovorin-, and irinotecan-based chemotherapy in metastatic colorectal cancer patients whose disease has progressed on a prior oxaliplatin-based chemotherapy regimen. The multikinase inhibitor regorafenib is modestly effective in the refractory colorectal cancer setting but confers significant toxicity. Ramucirumab, an anti-vascular endothelial growth factor receptor 2 molecule, has efficacy in combination with 5-fluorouracil, leucovorin, and irinotecan after disease progression on a first-line bevacizumab-, oxaliplatin-, and fluoropyrimidine-containing regimen. Questions regarding optimal treatment setting, predictive biomarkers of response, and cost-effectiveness of these anti-angiogenic agents and others are as yet unanswered.
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Abbreviations
- 5-FU :
-
5-Fluorouracil
- ALK :
-
Activin-receptor like kinase-1
- BEAMing :
-
Beads, emulsions, amplification and magnetic
- CI :
-
Confidence interval
- CRC :
-
Colorectal cancer
- DCE-MRI :
-
Dynamic-contrast-enhanced magnetic resonance imaging
- DCR :
-
Disease control rate
- DFS :
-
Disease-free survival
- DLT :
-
Dose-limiting toxicity
- DVT :
-
Deep venous thrombosis
- EGFR :
-
Epidermal growth factor receptor
- FGFR :
-
Fibroblast growth factor receptor
- FDA :
-
Food and Drug Administration
- FOLFOX :
-
5-Fluorouracil, leucovorin, and oxaliplatin
- FOLFOX4 :
-
Oxaliplatin 85 mg/m2, leucovorin 200 mg/m2, and fluorouracil 400 mg/m2 bolus plus 500 mg/m2 22-h continuous infusion on day1; leucovorin 200 mg/m2 plus fluorouracil 400 mg/m2 bolus plus 600 mg/m2 22-h continuous infusion on day 2
- FOLFIRI :
-
5-Fluorouracil, leucovorin and irinotecan
- HR :
-
Hazard ratio
- ICER :
-
Incremental cost-effectiveness ratio
- IFL :
-
Irinotecan, bolus fluorouracil, and leucovorin
- IV :
-
Intravenous
- KRAS :
-
Kirsten ras oncogene
- mCRC :
-
Metastatic colorectal cancer
- mFOLFOX6 :
-
Modified FOLFOX (oxaliplatin 85 mg/m2, leucovorin 400 mg/m2, 5-FU 400 mg/m2 bolus, and 5-FU2400 mg/m2 over 46 h)
- MTD :
-
Maximum tolerated dose
- NICE :
-
National Institute for Health and Care Evidence
- NSABP :
-
National Surgical Adjuvant Breast and Bowel Project
- ORR :
-
Overall response rate
- OS :
-
Overall survival
- PDGFR :
-
Platelet-derived growth factor receptor
- PR :
-
Partial response
- PlGF :
-
Placental growth factor
- PFS :
-
Progression-free survival
- SD :
-
Stable disease
- TBD :
-
To be determined
- VEGF :
-
Vascular endothelial growth factor
- XELOX :
-
Capecitabine and oxaliplatin
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Kristen K. Ciombor declares that she has no conflict of interest.
Richard M. Goldberg has received research support through grants for a clinical trial from Sanofi and Bayer to The Ohio State University and has received compensation from Eli Lilly & Co. for service on a data safety monitoring committee for a clinical trial and from Sanofi for conducting a lecture at a symposium.
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This article does not contain any studies with human or animal subjects performed by any of the authors.
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Ciombor, K.K., Goldberg, R.M. Update on Anti-angiogenesis Therapy in Colorectal Cancer. Curr Colorectal Cancer Rep 11, 378–387 (2015). https://doi.org/10.1007/s11888-015-0292-3
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DOI: https://doi.org/10.1007/s11888-015-0292-3