Transcript for Breast Cancer Study Reveals 4 Types
Now a big headline about breast cancer. More than 200,000 americans will be diagnosed this year alone. But there's news tonight about a ground-breaking study. It is called a road map to possibly curing the disease. Abc's chief medical editor dr. Richard besser is here to break it down. It's ground breaking. A different kind of breast cancer? What this does, it adds to our understanding, when it comes to cancer, doesn't mat whaer part of the body it's in. The lung, your breast, colon. What are the defects that cause them to grow out of control. In this study we looked at hundreds of breast cancer tumors. There were a variety of defects that caused them to be cancer and each is a different disease that take ace different form of treatment. Different treatment. What will begin soon? One of the different surprising findings for one of the hardest types of breast cancer, triple negative disease. It's about 10% of breast cancer. They found those cells were more closely related to ovarian cancer than breast cancer. Some are trying use ovarian cancer treatments to tackle that. It opens all kinds of examples for potential treatment. It's very exciting. Treating it as a ovarian cancer. . It is located in the breast but it acts like a ovarian cancer. You also take questions online. Still ahead on "world news,"
This transcript has been automatically generated and may not be 100% accurate.