Combination Therapy of Lapatinib and Capecitabine for ErbB2-positive Metastatic or Locally Advanced Breast Cancer: Results From the Lapatinib Expanded Access Program (LEAP) in Central and Eastern Europe

Onkologie. 2011;34(5):233-8. doi: 10.1159/000327710. Epub 2011 Apr 26.

Abstract

Background: The Lapatinib Expanded Access Program (LEAP) was initiated in 45 countries to provide lapatinib in combination with capecitabine to patients with ErbB2 (HER2)-positive breast cancer already treated with anthracyclines, taxanes and trastuzumab. We report the results from 12 Central and Eastern European countries.

Patients and methods: By 30 September 2008, 293 patients were enrolled. Patients were monitored for serious adverse events (SAEs) and for any decrease in left ventricular ejection fraction (LVEF). Overall survival and progression-free survival were also assessed.

Results: Mean treatment duration was 30 weeks; 107 patients (36.5%) discontinued therapy during the study, mainly due to disease progression (n = 86; 29.4%). A total of 78 SAEs were reported from 47 patients; the most frequently reported was diarrhoea (13 reports). Treatment had a relatively small effect on LVEF. Decreases were minor (0 to < 20%) in 61% of patients at the end of the study. During the study, 3 patients had decreased LVEF meeting the definition of an SAE; these events all resolved. Median overall and median progression-free survival were 37.6 and 21.1 weeks, respectively.

Conclusions: Heavily pretreated patients with ErbB2-positive locally advanced or metastatic breast cancer may benefit from treatment with lapatinib and capecitabine, with a low risk of cardiac toxicity.

Publication types

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

MeSH terms

  • Adult
  • Aged
  • Antineoplastic Combined Chemotherapy Protocols / administration & dosage*
  • Breast Neoplasms / drug therapy*
  • Breast Neoplasms / metabolism
  • Breast Neoplasms / secondary*
  • Capecitabine
  • Deoxycytidine / administration & dosage
  • Deoxycytidine / analogs & derivatives*
  • Europe
  • Female
  • Fluorouracil / administration & dosage
  • Fluorouracil / analogs & derivatives*
  • Humans
  • Lapatinib
  • Middle Aged
  • Quinazolines / administration & dosage
  • Treatment Outcome

Substances

  • Quinazolines
  • Lapatinib
  • Deoxycytidine
  • Capecitabine
  • Fluorouracil