Olivia Munn Diagnosed With Luminal B Breast Cancer: What to Know About the Aggressive Disease [Video]

In a series of posts shared to social media, the actress, 43, was candid about her diagnosis, which she received in 2023. Munn said she “took a genetic test that checks you for 90 different cancer genes… I tested negative for all, including BRCA (the most well-known breast cancer gene).”

Munn explained that the following winter, she also had “a normal mammogram.” Then, two months after that, she was diagnosed with an “aggressive, fast moving cancer,” categorized as Luminol B.

Munn’s efforts to raise awareness about breast cancer have seemed to spur on many to want to learn more about the cancer she has been fighting and how breast cancers are studied and categorized to doctors, in an effort to better treat them.

According to the Mayo Clinic, there are four main groups that breast cancers are divided into based on recently developed genetic tests of the …