Phase III efficacy data on bevacizumab plus chemotherapy in early breast cancer to be presented

Dec 10, 2010

Results of the GeparQuinto study, randomized Phase III efficacy data on the use of bevacizumab plus chemotherapy to treat women with early breast cancer will be presented at the 33rd Annual CTRC-AACR San Antonio Breast Cancer Symposium.

Gunter von Minckwitz, M.D., Ph.D., managing director of the German Breast Group, and colleagues are conducting final analyses on efficacy data from this study, which will detail the early treatment of more than 1,900 patients with HER2-negative breast cancer treated with with or without bevacizumab.

"So far, no efficacy data from Phase III trials have been reported for early breast cancer. This will be the first," said von Minckwitz. "If the pathological complete response rate is higher with bevacizmab than without bevacizumab, it will provide a new option to improve neoadjuvant treatment in HER2-negative breast cancer."

Bevacizumab is currently approved in the United States in combination with for the first-line treatment of metastatic . In July 2010, the Food and Drug Administration's Oncologic Drugs Advisory Committee voted 12 to 1 to eliminate this indication from the treatment label of bevacizumab.

"A negative or positive result might have a significant effect on this picture," said von Minckwitz. "However, pathological response as a surrogate for outcome is only confirmed for chemotherapy. Long-term follow up, as well as results from adjuvant studies have to be awaited."

The researchers investigated whether adding bevacizumab to treatment with four cycles of epirubicin/cyclophosphomide, followed by four cycles of docetaxel improved the rate of pathological complete response, which was defined as no invasive or non-invasive residual cancer in the breast or nodes.

Between May 2007 and June 2010, 944 patients were assigned chemotherapy treatment with epirubicin/cyclophosphamide followed by ; 945 patients were assigned this treatment plus bevacizumab.

After the first four cycles, the researchers performed an interim assessment; 24 percent of patients treated without bevacizumab and 17 percent of patients treated with bevacizumab showed no response and were discontinued from treatment.

Interim safety data from the trial, published earlier this year, indicated that treatment with bevacizumab was feasible. Patients assigned bevacizumab experienced more leukopenia, infections, mucositis and hypertension, but less edema. This safety profile is no different from that reported in first-line metastatic trials or Phase II adjuvant trials of bevacizumab, according to von Minckwitz.

Full results on the histological response and surgical outcome will be reported during the symposium.

"The results will provide an important signal as to whether will be effective as an adjuvant treatment," said von Minckwitz.

Explore further: Chronic inflammation linked to 'high-grade' prostate cancer

add to favorites email to friend print save as pdf

Related Stories

Popular cancer drug can cause kidney damage

Jun 10, 2010

The widely used cancer drug bevacizumab may cause severe loss of protein from the kidney into the urine that can lead to significant kidney damage and can compromise the efficacy of cancer treatment, according to a study ...

Recommended for you

Unraveling the 'black ribbon' around lung cancer

Apr 17, 2014

It's not uncommon these days to find a colored ribbon representing a disease. A pink ribbon is well known to signify breast cancer. But what color ribbon does one think of with lung cancer?

User comments : 0

More news stories

Treating depression in Parkinson's patients

A group of scientists from the University of Kentucky College of Medicine and the Sanders-Brown Center on Aging has found interesting new information in a study on depression and neuropsychological function in Parkinson's ...

Impact glass stores biodata for millions of years

(Phys.org) —Bits of plant life encapsulated in molten glass by asteroid and comet impacts millions of years ago give geologists information about climate and life forms on the ancient Earth. Scientists ...

Researchers successfully clone adult human stem cells

(Phys.org) —An international team of researchers, led by Robert Lanza, of Advanced Cell Technology, has announced that they have performed the first successful cloning of adult human skin cells into stem ...