Breast Cancer Susceptibility Screening

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Breast Cancer Susceptibility Screening

Introduction

In 1994, researchers isolated a gene, BRCA1, that has had an unprecedented impact on the study of cancer genetics. BRCA1 is a breast cancer susceptibility gene, meaning that women who possess certain mutations in this gene also possess a greatly inc reased risk of acquiring familial breast cancer. Just a year later, a second breast cancer susceptibility gene, BRCA2, was discovered. Mutations in these two genes alone appear to be responsible for approximately 70% of breast cancer cases in families w ith an inheritance pattern affecting several generations.

Due to the impressive statistics and the potential to alter the lives of millions of women, BRCA1 and BRCA2 have continuously been the focus of intensive research in laboratories around the world. Research has led to the development of genetic scree ning techniques to detect possible cancer-causing mutations. Along with the evolution of screening techniques, however, has come public scrutiny. The ethics of genetic testing for breast cancer must be examined as a critical aspect of the issue. In thi s paper, I am going to discuss the following areas pertaining to the topic of breast cancer susceptibility screening:

A review of some basic concepts of cancer genetics

General information about BRCA1 and BRCA2

Technical aspects of screening, including the major characteristics of each method

Ethical considerations, explaining views on both sides of the issue

Public policy regarding genetic screening

My personal opinion regarding genetic testing for breast cancer

Concepts in Cancer Genetics

The human body contains two major classes of regulatory genes that are necessary for normal cell growth control....

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