Actor Jackie Tohn discovered she carried the BRCA gene mutation, a finding that reshaped her approach to cancer prevention. In an essay for Women's Health, Tohn detailed her decision to undergo a preventative double mastectomy following the diagnosis.
The BRCA1 and BRCA2 gene mutations substantially elevate the lifetime risk of breast and ovarian cancer. Women who carry these mutations face up to an 87% chance of developing breast cancer by age 70, compared to about 13% in the general population. Men with BRCA mutations also face increased prostate and breast cancer risks.
Tohn's choice reflects a growing trend among BRCA carriers who opt for risk-reducing surgery. Research supports this approach. A study published in JAMA Oncology found that preventative mastectomy in BRCA-positive women reduced breast cancer risk by approximately 95%. Some carriers instead pursue intensive surveillance with frequent mammograms and MRIs, while others combine screening with preventative medication like tamoxifen.
Genetic testing has become more accessible in recent years. The American Cancer Society recommends testing for people with a personal or family history of breast cancer diagnosed before age 45, or ovarian cancer at any age. Those with ancestry from populations with higher BRCA mutation frequencies, including Ashkenazi Jewish heritage, face elevated risk and benefit from testing.
The decision between surveillance and surgery remains deeply personal. Some patients choose mastectomy for peace of mind, while others prefer monitoring. Mental health support becomes essential throughout this journey, as carriers often experience anxiety about cancer risk and decisions regarding their bodies.
Tohn's openness about her genetic status and surgical choice helps normalize conversations around cancer prevention. Her experience illustrates how genetic testing can empower individuals to take control of their health trajectory, offering options that weren't available a generation ago. For those with family histories