Phase III trial comparing three doses of docetaxel for second-line treatment of advanced breast cancer

J Clin Oncol. 2006 Nov 1;24(31):4963-70. doi: 10.1200/JCO.2005.05.0294. Epub 2006 Oct 10.


Purpose: To evaluate whether a relationship exists between docetaxel dose and clinical response in the treatment of patients with advanced breast cancer.

Patients and methods: Patients whose cancer had progressed after one prior chemotherapy regimen for advanced breast cancer or had recurred during or within 6 months of adjuvant chemotherapy were randomly assigned to docetaxel 60, 75, or 100 mg/m2 intravenously every 3 weeks.

Results: Five hundred twenty-seven patients were randomly assigned (intent to treat [ITT]), and 524 were assessable for toxicity. In the population assessable for efficacy (n = 407), logistic regression analysis showed that increasing docetaxel dose was significantly associated with higher response rate (P = .007) and improved time to progression (TTP; P = .014). In the ITT analysis, a significant dose-response relationship was observed for tumor response (P = .026) but not for TTP (P = .067). The incidences of most hematologic and nonhematologic toxicities were related to increasing dose, with grade 3 to 4 neutropenia occurring in 76.4%, 83.7%, and 93.4% and febrile neutropenia occurring in 4.7%, 7.4%, and 14.1% of patients administered the 60, 75, and 100 mg/m2 doses, respectively. One death was considered treatment related.

Conclusion: A relationship between increasing dose of docetaxel and increased tumor response was observed across the dose range of 60 to 100 mg/m2 every 3 weeks. Toxicities were related to increasing dose. Depending on the therapy goal, any of the doses studied may be appropriate for second-line treatment of advanced breast cancer.

Publication types

  • Clinical Trial, Phase III
  • Randomized Controlled Trial
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Adult
  • Aged
  • Aged, 80 and over
  • Antineoplastic Agents, Phytogenic / administration & dosage*
  • Antineoplastic Agents, Phytogenic / adverse effects
  • Antineoplastic Agents, Phytogenic / pharmacokinetics
  • Area Under Curve
  • Breast Neoplasms / drug therapy*
  • Breast Neoplasms / pathology
  • Docetaxel
  • Dose-Response Relationship, Drug
  • Female
  • Humans
  • Logistic Models
  • Male
  • Middle Aged
  • Proportional Hazards Models
  • Survival Analysis
  • Taxoids / administration & dosage*
  • Taxoids / adverse effects
  • Taxoids / pharmacokinetics
  • Treatment Outcome


  • Antineoplastic Agents, Phytogenic
  • Taxoids
  • Docetaxel