Breast Cancer

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A new DNA-based sequencing technique-Sequence Based Diagnosis (SBD)-that determines p53 gene status in primary breast cancers, yields better prognostic information than standard immunohistochemistry, according to a study in the February 20, 1996, issue of the Journal of the National Cancer Institute. The findings may have important implications for some of the over 180,000 US women diagnosed annually with breast cancer.

SAN FRANCISCO--Use of estrogen supplements may lower breast cancer mortality, an American Cancer Society study has shown. The study, which was discussed at the ACS's science writers meeting, followed 400,000 women who provided data about their cancer risk factors. After 9 years, breast cancer mortality was 16% lower in those women who used estrogen, suggesting that their tumors were less aggressive.

Although most studies of the relationship between oral contraceptives (OCs) and breast cancer have focused on a possible causative role for OCs, new data suggest that breast cancer patients with a history of OC use may actually fare better than women who have never taken the pill.

It is perhaps not surprising that the increased incidence of a disease that has a major impact on mortality in young women (even though the absolute risk of death from breast cancer in this age group is low) should create so much interest. Yet, despite decades of research, it is by no means clear that everyone would agree with King and Schottenfeld that the appropriate approach to breast cancer prevention is one that "focuses on the physiologic effects of the sex steroid hormones and their potential interactions with family history." However, this tantalizing statement appearing at the end of the abstract of their article fortunately is elaborated upon at the end of the article itself. This elaboration refers specifically to physical activity, energy consumption, obesity, pregnancy history and exogenous estrogens and their potential interactions with family history, with which many will agree.

SAN ANTONIO--Screening mam-mography significantly improves breast cancer survival in women ages 40 to 49, compared with other methods of cancer detection, a Minnesota study suggests.

PARIS--The luteinizing hormone-releasing hormone (LHRH) agonist goserelin (Zoladex) proved as effective as surgical ovariectomy in premenopausal women with estrogen and/or progestogen receptor-positive metastatic breast cancer, a randomized multicenter study has shown.

Data presented at the 18th Annual San Antonio Breast Cancer Symposium in Boulder, Colorado, shows that moderate-dose DaunoXome, NeXstar Pharmaceuticals' liposomal formulation of daunorubicin, is well-tolerated and has promising efficacy in treating advanced breast cancer. Moreover, the limited toxicity observed in this trial, particularly the absence of cardiotoxicity, suggests that DaunoXome may be useful in ameliorating the side effects that accompany high-dose anthracycline-based chemotherapy for metastatic breast cancer. The data, generated in a phase II study funded by NeXstar, were presented by P.S. Hupperets, MD, of the Akademisch Ziekenhuis, in Maastricht, The Netherlands.

PITTSBURGH--Victor Vogel, MD, MHS, will lead a newly established joint breast cancer program of the University of Pittsburgh Cancer Institute and Magee-Womens Hospital. He will also join the University of Pittsburgh as professor of medicine and epidemiology.

An expert panel of seven cancer researchers and a representative of the National Alliance of Breast Cancer Organizations (NABCO) came together at the San Antonio Breast Cancer Symposium for a roundtable discussion of the use of tamoxifen (Nolvadex), sponsored by PRR, Inc., publisher of Oncology News International and the journal ONCOLOGY.

SAN ANTONIO--Three studies reported at the San Antonio Breast Cancer Symposium show no apparent adverse effects of hormone replacement therapy (HRT) on breast cancer and, in fact, suggest that breast cancers in patients with a history of HRT may have a more favorable prognosis in terms of histologic grade and estrogen-receptor (ER) levels.

COLLEGEVILLE, Penn--Rhône-Poulenc Rorer Inc. and the National Surgical Adjuvant Breast and Bowel Project (NSABP) have announced the initiation of a new clinical trial (B-27) utilizing docetaxel (Taxotere) in women with operable breast cancer.

BETHESDA, Md--The American Medical Writers Association is seeking applications for the 1996 Rose Kushner Awards for Writing Achievement in the Field of Breast Cancer.

An expert panel of seven cancer researchers and a patient advocate came together at the San Antonio Breast Cancer Symposium for a roundtable discussion on tamoxifen (Nolvadex), sponsored by PRR, Inc., publisher of Oncology News International and the journal ONCOLOGY.

In this issue, Love and Vogel bring attention to the fact that most breast cancers are not inherited but are the result of several, varied hormonal influences. This is an important message because prevention of breast cancer for some women can be accomplished by hormone manipulation from moderate exercise, maintaining low body mass, abstention from alcohol, and lactation. The authors discuss the physiologic role of delayed pregnancy but avoid the issue in terms of preventive strategy. Many women choose to delay pregnancy in pursuit of career development for economic reasons. This makes for a difficult choice in terms of breast cancer risk, but one that should be addressed. The article proposes that lobular maturation and exposure of the breast to hormones are two key processes in breast cancer. Indeed, emerging data also suggest that excess hormonal exposure in utero may influence adult breast cancer risk.