Triple-Negative Breast Cancer

A study published online in the Journal of Clinical Oncology analyzed triple-negative breast cancer (TNBC) for distinguishing characteristics. The study compared clinical, pathological, and hormone-related lifestyle characteristics of 1469 women aged twenty to forty-nine.

Triple-negative breast cancers represent a challenge for patients and clinicians, with poorer prognosis and fewer treatment options than other breast cancer subtypes. Recently, though, there have been suggestions that targeting pathways that repair DNA within tumor cells could provide benefit beyond the currently available treatments.

Researchers at the BC Cancer Agency in Vancouver and colleagues have just published the results of a phase II study showing that olaparib (AZD2281), an oral PARP inhibitor, may be effective in treating non-BRCA-related ovarian cancer patients.

Researchers at the Vanderbilt-Ingram Cancer Center and the Vanderbilt University School of Medicine have parsed the large and heterogeneous triple-negative breast cancer (TNBC) category of patients into 6 molecularly distinct subgroups. This may be an important step towards delineating these patients as specific genetic subtypes to channel them to appropriate targeted therapy trials.

Dr. Gianni has been involved with new drug therapies in medical oncology for some time, and in this interview he discusses the changing use of breast cancer treatments, neoadjuvant regimens, and research and developments on HER2+ breast cancer.

Triple-negative breast cancer (TNBC) continues to carry a poor prognosis. However, novel prognostic and potentially predictive biomarkers may soon improve that bleak outlook, according to a series of studies presented on Saturday at the American Society of Clinical Oncology (ASCO) Annual Meeting in Chicago.

Researchers at Baylor and affiliated institutions reported in the January issue of the New England Journal of Medicine that the addition of iniparib to chemotherapy improves the clinical benefit and survival of patients with metastatic triple-negative breast cancer, without significantly increased toxic effects.

As the FDA considers whether to rescind approval for bevacizumab (Avastin) in the adjuvant setting, “disappointing” results from the GeparQuinto study indicate the agent may be best reserved for patients with triple-negative disease.

For women with triple-negative breast cancer, BRCA mutations can be a boon: These patients have a significantly lower risk of relapse than their counterparts who do not carry BRCA mutations.

This review will examine the current understanding of PARP inhibition as a treatment for breast cancer, ongoing clinical trials, and future directions for this new approach.
• Development of PARP Inhibitors: An Unfinished Story
• PARP Inhibitors: What We Know and What We Have Yet to Know

PODCAST
The early promise of treating triple-negative and basal-cell breast cancers with poly (ADP-ribose) polymerase (PARP) inhibitors is yet to be realized, according to Lisa A. Carey, MD, who will be delivering a presentation on treatment options for these patients at the Miami Breast Cancer Conference this week.