Dual Inhibition of HER2 Beats Single Agent in Breast Cancer

For HER2-positive breast cancer, inhibition with lapatinib and trastuzumab superior to single agent

TUESDAY, Jan. 17 (HealthDay News) -- Treatment of human epidermal growth factor receptor 2 (HER2)-positive breast cancer with two anti-HER2 agents (lapatinib and trastuzumab) is superior to treatment with single-agent therapy, according to a study published online Jan. 17 in The Lancet.

José Baselga, M.D., from Harvard Medical School in Boston, and colleagues randomly assigned 455 women with HER2-positive primary breast cancer, with tumors larger than 2 cm diameter, to receive intravenous trastuzumab, oral lapatinib, or both for six weeks. A weekly dose of paclitaxel was added for a further 12 weeks, followed by surgical removal of the tumor. The rate of pathologic complete response (pCR) was the primary end point.

The researchers found that the rate of pCR was 51.3 percent for patients receiving lapatinib and trastuzumab, compared with 29.5 and 24.7 percent in patients receiving trastuzumab and lapatinib alone, respectively. There was no significant difference between lapatinib and trastuzumab groups with respect to pCR. There were no major cardiac dysfunctions, but grade 3 diarrhea and liver-enzyme alterations were more frequent with lapatinib and lapatinib plus trastuzumab treatment than with trastuzumab alone.

"In conclusion, this open-label, multicenter, phase 3 study showed that dual inhibition of HER2 with lapatinib and trastuzumab in combination with paclitaxel is better than single-agent HER2 targeting," the authors write.

Several authors disclosed financial ties with pharmaceutical companies, including GlaxoSmithKline, which funded the study.

Abstract
Full Text (subscription or payment may be required)
Editorial (subscription or payment may be required)

Copyright © 2012 HealthDay. All rights reserved.

Powered by

jQuery UI Accordion - Default functionality

For life-long learning and continuing professional development, come to Lippincott's NursingCenter.

Nursing Jobs Plus
Featured Jobs
Recommended CE Articles

Blunt Chest Trauma
Journal of Trauma Nursing, November/December 2014
Expires: 12/31/2016 CE:2 $21.95


The School Age Child with Congenital Heart Disease
MCN, The American Journal of Maternal/Child Nursing, January/February 2015
Expires: 2/28/2017 CE:2.5 $24.95


Understanding multiple myeloma
Nursing Made Incredibly Easy!, January/February 2015
Expires: 2/28/2017 CE:2 $21.95


More CE Articles

Subscribe to Recommended CE

Recommended Nursing Articles

Comprehensive Care: Looking Beyond the Presenting Problem
Journal of Christian Nursing, January/March 2015
Free access will expire on March 2, 2015.


Pain and Alzheimer dementia: A largely unrecognized problem
Nursing Made Incredibly Easy!, January/February 2015
Free access will expire on February 16, 2015.


Glycemic control in hospitalized patients
Nursing2015 Critical Care, January 2015
Free access will expire on February 16, 2015.


More Recommended Articles

Subscribe to Recommended Articles

Evidence Based Practice Skin Care Network NursingCenter Quick Links What’s Trending Events