CommunitiesJust Diagnosed With Breast CancerWhat Does a KI67 Score Tell Us About Cancer Growth?

What Does a KI67 Score Tell Us About Cancer Growth?

JT

Community Member

3 years ago

I'm wondering if KI67 gives us an idea of how fast the cancer grows? For example if I had a KI67 of 35 and a 2 cm tumor, does it mean it likely started growing 6 months ago or a year ago or??

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accepted answer

Accepted Answer

Ki67 is a helpful marker that shows how many cancer cells are actively dividing, but it doesn't work like a timeline to tell us exactly when a tumor started growing. Cancer growth is complex and can vary based on many factors like the specific type of cancer, individual biology, and other characteristics of the tumor. While a higher Ki67 score generally indicates more active cell division, predicting how long a tumor has been growing requires your oncologist to consider many different factors together, including imaging, pathology, and your specific situation.

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SG

Community Member

9 months ago

Hi Jasmine! I don’t know the answer to your specific question but I do know some treatment decisions are made based on Ki-67. You can discuss with one of our oncology nurse practitioners by submitting this question using the ASK Outcomes4Me box at the bottom of the home screen in the app. Thanks for being part of our community. 💕

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CA

Community Member

5 months ago

Ki67 is a helpful marker that shows how many cancer cells are actively dividing, but it doesn't work like a timeline to tell us exactly when a tumor started growing. Cancer growth is complex and can vary based on many factors like the specific type of cancer, individual biology, and other characteristics of the tumor. While a higher Ki67 score generally indicates more active cell division, predicting how long a tumor has been growing requires your oncologist to consider many different factors together, including imaging, pathology, and your specific situation.

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