Overview
- Tohn disclosed Friday on the Today show that she carries a BRCA1 mutation and chose a preventive double mastectomy with reconstruction on December 1, 2025.
- Pathology from the surgery found multiple pre‑cancerous cells in both breasts, which her doctor said affirmed the risk she faced.
- Her choice followed her father’s January 2025 diagnosis of male breast cancer and his positive BRCA1 result, after which her June 2025 test estimated an 85% lifetime risk.
- She is partnering in a paid campaign with Myriad Genetics to urge people with rare, early, or multiple cancers in their families to seek genetic counseling and testing.
- Experts estimate a 45–85% lifetime breast cancer risk for BRCA carriers, and the mutation occurs in about 1 in 40 people of Ashkenazi Jewish ancestry versus about 1 in 400 in the general population.