Phase II studies of gemcitabine and cisplatin in heavily and minimally pretreated metastatic breast cancer

Helen K. Chew, James H. Doroshow, Paul Frankel, Kim A. Margolin, George Somlo, Heinz Josef Lenz, Michael Gordon, Wu Zhang, Dongyun Yang, Christy Russell, Darcy Spicer, Tim Synold, Robert Bayer, Alexander Hantel, Patrick J. Stiff, Merry L. Tetef, David R. Gandara, Kathy S. Albain

Research output: Contribution to journalArticlepeer-review

54 Scopus citations


Purpose: Cisplatin and gemcitabine have single-agent activity in metastatic breast cancer, and preclinical data support synergy of the combination. Two parallel, phase II trials were conducted to evaluate the response rate, response duration, and toxicities of the combination. Genetic polymorphisms were analyzed for correlation with outcomes. Patients and Methods: Eligible women had measurable disease and heavily or minimally pretreated metastatic breast cancer. The heavily pretreated protocol required prior anthracycline and taxane therapy; cisplatin as part of high-dose therapy was allowed. All patients received cisplatin 25 mg/m2 on days 1 through 4 and gemcitabine 1,000 mg/m2 on days 2 and 8 of a 21-day cycle with prophylactic granulocyte colony-stimulating factor in the heavily pretreated group. Sera from a subset of patients were evaluated by polymerase chain reaction restriction fragment length polymorphism for polymorphisms in 10 genes of interest. Results: Of 136 women enrolled, 74 were heavily pretreated. Both protocols accrued to their two-stage design. The response rate for both the heavily and minimally pretreated cohorts was 26%, and the median durations of response were 5.3 and 5.9 months, respectively. In a multivariate analysis, hormone receptor-negative disease was associated with a higher response rate. The most common grades 3 or 4 toxicities were thrombocytopenia (71%), neutropenia (66%), and anemia (38%). In a subset of 55 patients, the xeroderma pigmentosum group D (XPD)-751, x-ray cross-complementing group 3 (XRCC3) and cytidine deaminase polymorphisms were significantly associated with clinical outcomes. Conclusion: Combination cisplatin and gemcitabine is active in metastatic breast cancer regardless of prior therapy. Genetic polymorphisms may tailor which patients benefit from this regimen.

Original languageEnglish (US)
Pages (from-to)2163-2169
Number of pages7
JournalJournal of Clinical Oncology
Issue number13
StatePublished - May 1 2009

ASJC Scopus subject areas

  • Cancer Research
  • Oncology
  • Medicine(all)


Dive into the research topics of 'Phase II studies of gemcitabine and cisplatin in heavily and minimally pretreated metastatic breast cancer'. Together they form a unique fingerprint.

Cite this