Breast Cancer

Preliminary survival data are encouraging for the triple-drug combination of trastuzumab (Herceptin), docetaxel (Taxotere), and capecitabine (Xeloda) as first-line therapy for locally advanced or metastatic breast cancer

Studies show that thousands of women may be receiving the wrong breast cancer treatment because of faulty laboratory reports. More disturbing, this trend was identified years ago. A 2006 study led by Genentech found 14% to 16% of HER2 tests were false positive and 18% to 23% were false negative.

The FDA has approved a new indication for Genentech's Herceptin (trastuzumab) as a single agent for the adjuvant treatment of HER2-overexpressing, node-negative (ER/PR-negative or with one high-risk feature) or node-positive breast cancer, following multimodality anthracycline-based therapy.

Ixabepilone is indicated in combination with capecitabine(Xeloda) for the treatment of patients with metastatic orlocally advanced breast cancer resistant to prior anthracyclineand paclitaxel treatment (or for whom this treatmentis contraindicated).

MRI has outrun other modalities in a screening trial involving high-risk women. Such research helps justify an estimated $1.4 billion a year in direct costs for the United States if new American Cancer Society guidelines

The combination of capecitabine (Xeloda) and ixabepilone (Ixempra) appears to be robust in patients with the so-called triple-negative breast cancer phenotype

By a 5-4 vote, the Oncology Drugs Advisory Committee failed to recommend that FDA approve Avastin (bevacizumab, Genentech) in combination with paclitaxel as a first-line treatment for locally recurrent or metastatic, HER2-negative breast cancer.

Breast MRI identifies mammographically occult secondary tumors in about 6% of women with early-stage breast cancer who would otherwise qualify for partial breast irradiation

In the neoadju-vant treatment of early breast cancer, fulvestrant (Faslodex) 500 mg effected a greater reduction in biomarkers of proliferation and produced more responses than the standard 250 mg dose

African-American women with early-stage breast cancer are more likely than their Caucasian counterparts to experience a relapse after breast-conserving therapy, but the absolute difference in risk is small

Studies presented at the 2007 San Antonio Breast Cancer Symposium raise new questions about the role of anthracycline-based regimens as adjuvant therapy in early breast cancer, suggesting that these regimens may be appropriate only for a small subset of patients.

Partial breast irradiation (PBI) with concurrent chemotherapy is feasible and is associated with an acceptable rate of toxicity

A cutting-edge prognostic tool called MammaPrint, developed by Agendia, a laboratory located in The Netherlands, uses molecular technology to predict whether breast cancer will metastasize, helping clinicians make more accurate management decisions for their patients.

Use of accelerated partial breast irradiation (APBI) with multicatheter brachytherapy to treat resected early-stage breast cancer is associated with good early outcomes in terms of local control, adverse effects, and cosmesis

Anastrozole (Arimidex) is more effective than tamoxifen at preventing breast cancer recurrence for periods of at least 10 years in women with hormone-responsive cancers.

Strides made in the treatment of metastatic breast cancer (MBC) appear to prolong survival in some settings, but the cost in terms of quality of life (QOL) remains a concern. The previous four E-Updates in this series on metastatic breast cancer have focused on the various treatment options, including chemotherapy, anti-HER2 targeted therapy, antiangiogenic therapy, and hormonal therapy. In this E-Update, we turn to the role of supportive measures in the treatment of cancer, specifically as these measures relate to quality of life. These measures include the use of erythropoiesis-stimulating agents (ESA) and bisphosphonates, management of fatigue and pain, and psychological care.

The massive American College of Radiology Imaging Network 6666 trial shows that adding ultrasound to the initial screening protocol for high-risk women could help detect 30% more cancers. The cost, however, could be many more needless biopsies of benign lesions.

Adding a radiation therapy boost to the lumpectomy site after lumpectomy with whole-breast radiation therapy reduces the risk of local recurrence, particularly among breast cancer patients with high-risk features, including positive margins.

Photography exhibit features breast and ovarian cancer patients and families

A new model for calculating invasive breast cancer risk, called the CARE model, has been found to give better estimates of the number of breast cancers that would develop in African-American women age 50 to 79 years than an earlier model known as BCRAT (Breast Cancer Risk Assessment Tool), which was based primarily on data from white women

The decision to treat metastatic breast cancer with combination or single-agent chemotherapy may depend on the patient's and the clinician's perception and definition of the goals of such therapy, according to speakers at the 3rd Annual Oncology Congress.

By the year 2030 most patients with breast cancer will be aged 65 years or more and many will be frail. Frailty implies diminished physiologic reserve; contributors include diminished organ function, comorbidities, impaired physical function, and geriatric syndromes. Time-efficient tools for assessing frailty are being developed and, once validated, can be used to identify frail cancer patients and help direct therapy. Screening mammography in frail patients is questionable, and a clinical breast exam is likely to identify breast cancers that warrant intervention. Hormonal therapy may be a reasonable primary therapy in older frail women with hormone receptor–positive lesions. For estrogen receptor– and progesterone receptor–negative lesions, excision of the primary tumor may be adequate. Adjuvant hormonal therapy may be appropriate in frail elders with high-risk hormone receptor–positive breast cancer; chemotherapy is rarely indicated regardless of tumor status. The majority of frail elders with metastases will have hormone receptor–positive breast cancers, and endocrine therapy should be considered; those with receptor-negative tumors may be treated with single-agent chemotherapy or supportive care measures. Oncologists need to acquire the skills to appropriately identify frail elders so they select appropriate therapies that will minimize toxicity and maintain quality of life.

Women who live in urban areas have denser breasts, making them more likely to develop breast cancer, according to a study presented recently at the annual meeting of the Radiological Society of North America (RSNA).

By the year 2030 most patients with breast cancer will be aged 65 years or more and many will be frail. Frailty implies diminished physiologic reserve; contributors include diminished organ function, comorbidities, impaired physical function, and geriatric syndromes. Time-efficient tools for assessing frailty are being developed and, once validated, can be used to identify frail cancer patients and help direct therapy. Screening mammography in frail patients is questionable, and a clinical breast exam is likely to identify breast cancers that warrant intervention. Hormonal therapy may be a reasonable primary therapy in older frail women with hormone receptor–positive lesions. For estrogen receptor– and progesterone receptor–negative lesions, excision of the primary tumor may be adequate. Adjuvant hormonal therapy may be appropriate in frail elders with high-risk hormone receptor–positive breast cancer; chemotherapy is rarely indicated regardless of tumor status. The majority of frail elders with metastases will have hormone receptor–positive breast cancers, and endocrine therapy should be considered; those with receptor-negative tumors may be treated with single-agent chemotherapy or supportive care measures. Oncologists need to acquire the skills to appropriately identify frail elders so they select appropriate therapies that will minimize toxicity and maintain quality of life.

10 notable developments and events in cancer research and care

A growing number of novel antiangiogenic agents are entering clinical trials to study their clinical safety and efficacy. A few, such as bevacizumab (Avastin), sorafenib (Nexavar), and sunitinib (Sutent), have received US Food and Drug Administration approval and are already in widespread clinical use. As knowledge about the intricacies of intracellular signaling within multiple tumor types expands, agents with the capacity to impact these pathways are being incorporated into additional clinical trials alone and in combination with other targeted and/or traditional antineoplastic agents. Early clinical trials have focused on highly vascular tumor types, as well as those known to significantly overexpress the VEGF (vascular endothelial growth factor) receptor family. This article aims to review the status of antiangiogenic therapy in selected tumor types and discuss areas for further research.

US Food and Drug Administration (FDA) has granted approval of ixabepilone (Ixempra) as monotherapy for the treatment of patients with metastatic or locally advanced breast cancer in patients whose tumors are resistant or refractory to anthracyclines, taxanes, and capecitabine (Xeloda)

FDA has approved Bristol-Myers Squibb's Ixempra (ixabepilone) for treatment of resistant or refractory metastatic or locally advanced breast cancer.

ASCO has added the Oncotype DX gene expression assay to its updated guideline for the use of tumor markers in breast cancer

Clinical trials have shown significant improvements in disease-free survival when trastuzumab (Herceptin) is added to standard adjuvant chemotherapy in HER2-positive breast cancer patients, but is it appropriate for all such patients, specifically low-risk patients with tumors 1 cm or smaller in size?