Treatment of colorectal cancer metastasis: the role of chemotherapy.
5-Fluorouracil (5-FU) has been the main chemotherapeutic agent for the treatment of colorectal cancer for four decades with modest efficacy. Modulation of 5-FU by leucovorin or continuous infusion improves the response rate, but overall survival duration remains approximately 12 months. Many oral fluoropyrimidines have been studied, including capecitabine, UFT, S-1, and Eniluracil. Capecitabine has demonstrated equivalent efficacy with 5-FU and has been approved as first line treatment. The combinations of capecitabine with CPT-11 or oxaliplatin are being developed. CPT-11 demonstrated non-crossover resistance with 5-FU and was proven to be effective treatment for patients who received prior 5-FU. CPT-11 in combination with 5-FU has demonstrated improved response rate and overall survival duration over 5-FU or CPT-11. Oxaliplatin plus 5-FU has offered another effective treatment option for colorectal cancer. Both 5-FU plus leucovorin in combination with CPT-11 or oxaliplatin are widely used first-line chemotherapies for advanced colorectal cancer. Optimal combinations and sequences of treatment are being studied, since several effective regimens have become available.
Xiong
Henry Q
HQ
Department of Gastrointestinal Medical Oncology, The University of Texas M.D. Anderson Cancer Center, Houston, Texas, USA. qxiong@mdanderson.org
Ajani
Jaffer A
JA
D000971:Antineoplastic Combined Chemotherapy Protocols / Q000627:therapeutic use; D002166:Camptothecin / Q000008:administration & dosage / Q000031:analogs & derivatives*; D000069287:Capecitabine; D002986:Clinical Trials as Topic; D015179:Colorectal Neoplasms / Q000473:pathology* / Q000628:therapy*; D003841:Deoxycytidine / Q000008:administration & dosage / Q000031:analogs & derivatives*; D005472:Fluorouracil / Q000008:administration & dosage*; D006801:Humans; D000077146:Irinotecan; D002955:Leucovorin / Q000008:administration & dosage; D009362:Neoplasm Metastasis; D009944:Organoplatinum Compounds / Q000008:administration & dosage; D000077150:Oxaliplatin; D011799:Quinazolines / Q000008:administration & dosage; D005641:Tegafur / Q000627:therapeutic use; D013876:Thiophenes / Q000008:administration & dosage; D014498:Uracil / Q000008:administration & dosage / Q000031:analogs & derivatives* / Q000627:therapeutic use
D009944:Organoplatinum Compounds; D011799:Quinazolines; D013876:Thiophenes; D000077150:Oxaliplatin; D003841:Deoxycytidine; D005641:Tegafur; C073482:eniluracil; D014498:Uracil; D000069287:Capecitabine; D000077146:Irinotecan; C068874:raltitrexed; D002955:Leucovorin; D005472:Fluorouracil; D002166:Camptothecin