title: The efficacy and toxicity of FOLFOX regimen (a combination of leucovorin and fluorouracil with oxaliplatin) as first-line treatment of metastatic colorectal cancer.
abstract: BACKGROUND
  Oxaliplatin is the third-generation platinum complex to be active in advanced colorectal cancer. In Japan, it was approved in April 2005. FOLFOX regimen(a combination of leucovorin and fluorouracil with oxaliplatin) has been one of the standard chemotherapy regimens for metastatic colorectal cancer.
  
  
  METHODS
  To evaluate the efficacy and feasibility of FOLFOX4 and mFOLFOX6 regimens as first-line chemotherapy in Japanese patients with metastatic colorectal cancer, 23 consecutive patients with histologically confirmed colorectal cancer who were treated between June 2005 and August 2007 were investigated in this retrospective study. FOLFOX4 was used for treatment in 13 patients(57%), and mFOLFOX6 was in 10 patients(43%).
  
  
  RESULTS
  The objective response rate was 50.0%. The median survival time was 17.4 months. The median number of cycles was 8.0, with a median relative dose intensity of 74.5% for oxaliplatin. Grade 3 or 4 hematological toxicities were leukocytopenia in four patients, and neutropenia in 12 patients, while non-hematological toxicities such as nausea, anorexia and sensory neuropathy occurred in only one patient each adverse event. No treatment-related deaths occurred.
  
  
  CONCLUSIONS
  FOLFOX regimen has good efficacy in Japanese patients with metastatic colorectal cancer as first-line chemotherapy, with an acceptable overall toxicity profile.
authors.affiliation: Dept. of Surgery, Tosei General Hospital, Aichi, Japan.
authors.forename: Hidenobu
authors.initials: H
authors.lastname: Matsushita
authors.forename: Kenji
authors.initials: K
authors.lastname: Tsuboi
authors.forename: Ichiro
authors.initials: I
authors.lastname: Honda
authors.forename: Nobuyuki
authors.initials: N
authors.lastname: Kato
authors.forename: Osamu
authors.initials: O
authors.lastname: Okochi
authors.forename: Daisuke
authors.initials: D
authors.lastname: Kobayashi
authors.forename: Masashi
authors.initials: M
authors.lastname: Hattori
mesh_terms: D000328:Adult; D000368:Aged; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects* / Q000494:pharmacology / Q000627:therapeutic use*; D015179:Colorectal Neoplasms / Q000188:drug therapy* / Q000473:pathology; D018450:Disease Progression; D004305:Dose-Response Relationship, Drug; D005260:Female; D005472:Fluorouracil / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use; D006801:Humans; D002955:Leucovorin / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use; D008297:Male; D008875:Middle Aged; D009362:Neoplasm Metastasis / Q000188:drug therapy / Q000473:pathology; D009944:Organoplatinum Compounds / Q000009:adverse effects / Q000494:pharmacology / Q000627:therapeutic use; D015996:Survival Rate; D016896:Treatment Outcome
chemical_list: D009944:Organoplatinum Compounds; D002955:Leucovorin; D005472:Fluorouracil