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Mari said her younger sister, Lisa, was diagnosed with breast cancer last year. "Unfortunately, Lisa was diagnosed last year. My younger sister, both of us have a faulty rad-51 gene," she said. "It's been a really difficult time for the family. But, we've been able to help each other." She said it was her "duty" to raise awareness about the disease. "One in two of us will get cancer. One in seven will get breast cancer," she said.
