title: Gemcitabine and split-dose paclitaxel or docetaxel in metastatic breast cancer: a randomised phase II study.
abstract: OBJECTIVE
  The purpose was to evaluate the activity and toxicity of split-dose paclitaxel or docetaxel in combination with gemcitabine in patients with metastatic breast cancer (MBC) who had previously received anthracyclines.
  
  
  METHODS
  A total of 210 patients were randomly assigned to one of three treatment arms: gemcitabine 1,250 mg/m(2) Days 1 and 8 and paclitaxel 175 mg/m(2) as a 3-h infusion on Day 1 (GP1); gemcitabine 1,000 mg/m(2) Days 1 and 8 and paclitaxel 100 mg/m(2) as a 1-h infusion on Days 1 and 8 (GP2); gemcitabine 1,000 mg/m(2) Days 1 and 8 and docetaxel 40 mg/m(2) as a 1-h infusion on Days 1 and 8 (GD). Cycles were repeated every 3 weeks.
  
  
  RESULTS
  For the 204 patients evaluable for response assessment, the response rates were 48.6% for GP1, 52.2% for GP2, and 52.3% for GD. Median response duration, time to treatment failure, and time to progression (TTP) were similar in each arm. Median TTP for GP1, GP2 and GD was 7.5, 7.0 and 7.4 months, respectively. For the 208 patients evaluable for safety, the most common grade 3/4 toxicity for each regimen was neutropaenia, with 64%, 57%, and 68% for GP1, GP2, and GD, respectively. Grade 4 neutropaenia, grade 3/4 anaemia, febrile neutropaenia, and diarrhoea were more common in the docetaxel arm, as was the use of intravenous antibiotics and blood transfusions.
  
  
  CONCLUSIONS
  The study confirmed the high activity of gemcitabine-taxane combinations in MBC. Split-dose paclitaxel had similar activity and toxicity to the 3-weekly administration. The split-dose docetaxel regimen had similar activity to the paclitaxel combinations though associated with higher toxicity.
authors.affiliation: National Cancer Centre, Singapore, Singapore.
authors.forename: Kei Siong
authors.initials: KS
authors.lastname: Khoo
authors.forename: Syed Hasan
authors.initials: SH
authors.lastname: Manzoor Zaidi
authors.forename: Vichien
authors.initials: V
authors.lastname: Srimuninnimit
authors.forename: Santai
authors.initials: S
authors.lastname: Song
authors.forename: Reena
authors.initials: R
authors.lastname: Nair
authors.forename: Corazon A
authors.initials: CA
authors.lastname: Ngelangel
authors.forename: Anita
authors.initials: A
authors.lastname: Bustam
authors.forename: William H H
authors.initials: WH
authors.lastname: Reece
authors.forename: Manfred
authors.initials: M
authors.lastname: Lehnert
mesh_terms: D000293:Adolescent; D000328:Adult; D000971:Antineoplastic Combined Chemotherapy Protocols / Q000009:adverse effects / Q000627:therapeutic use*; D003841:Deoxycytidine / Q000008:administration & dosage / Q000009:adverse effects / Q000031:analogs & derivatives; D000077143:Docetaxel; D005260:Female; D006801:Humans; D008875:Middle Aged; D009362:Neoplasm Metastasis; D017239:Paclitaxel / Q000008:administration & dosage / Q000009:adverse effects; D043823:Taxoids / Q000008:administration & dosage / Q000009:adverse effects; D017211:Treatment Failure; D000093542:Gemcitabine
chemical_list: D043823:Taxoids; D003841:Deoxycytidine; D000077143:Docetaxel; D017239:Paclitaxel; D000093542:Gemcitabine