The Role of Genomics in Breast Cancer Screening
Breast cancer remains one of the most common cancers worldwide, and early detection continues to play an important role in improving outcomes. While traditional screening methods such as mammography are central to detecting breast cancer, advances in genomics are providing new ways to understand an individual’s underlying risk.
By looking at genetic information alongside personal and family history, healthcare professionals can identify individuals who may have an increased risk of hereditary breast cancer and determine whether additional screening or genetic counseling may be appropriate.
Understanding the Genetic Connection
Not all breast cancers are hereditary. In fact, the majority of breast cancers are not caused by inherited genetic changes. However, approximately 5% to 10% of breast cancers are considered hereditary, meaning they can be associated with genetic changes passed from one generation to another. Some of the most commonly associated genes with hereditary breast cancer are BRCA1 and BRCA2. These genes play an important role in repairing damaged DNA. Inheriting a harmful variant in one of these genes can significantly increase the risk of developing breast and other cancers. Other genes, like PALB2, ATM, TP53, CDH1, PTEN, and STK11, can also be associated with elevated breast cancer risk.
Understanding these genetic factors can provide important context when assessing an individual’s overall risk.
The Importance of Family History
Genetic risk assessment often begins with something surprisingly simple: understanding family history.
A history of multiple relatives with breast cancer, breast cancer diagnosed at a younger age, ovarian cancer, male breast cancer, or a known inherited genetic variant can indicate an increased likelihood of hereditary cancer risk.
Genetic testing can provide another layer of information. When testing identifies a harmful inherited variant, that information may be relevant not only to the individual being tested, but also to biological relatives who may share the same variant.
Importantly, having an inherited genetic variant does not mean that someone will definitely develop cancer. Genetic results are one part of a broader risk assessment and should be interpreted alongside personal and family history with appropriate healthcare guidance.
Turning Genomic Data into Meaningful Insights
As genomic testing becomes more accessible, the volume and complexity of genetic data continues to grow. Laboratories and healthcare organizations need reliable ways to manage, interpret, and communicate that information.
This is where genomic software can play an important role.
Our platform can help support workflows across the testing process, from managing complex genetic data to organizing results and helping laboratories and healthcare professionals work with information efficiently.
The goal is not simply to generate more data, it is to make genomic information more usable so that it can contribute to informed clinical conversations and, where appropriate, more personalized approaches to screening and care.
Looking Toward More Personalized Screening
Breast cancer screening is evolving as our understanding of cancer biology and genetics continues to advance. Genomic information can help reveal risk factors that may not be apparent from traditional screening or family history alone.
As genomic technologies continue to advance, the opportunity lies in bringing genetic information together with other clinical insights to support more informed approaches to breast cancer risk assessment and screening.
This Breast Cancer Awareness Month, we recognize the importance of early detection while looking ahead to how genomics and technology can continue to expand our understanding of cancer risk.
