Replies to Did your oncologist base the 15% recurrence risk on genomic or other tests of tumor tissue? | Mayo Clinic Connect

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5mg vs 10mg of Tamoxifen

Breast Cancer | Last Active: Mar 4 9:27am | Replies (14)

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@callalloo

Did your oncologist base the 15% recurrence risk on genomic or other tests of tumor tissue?

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Replies to "Did your oncologist base the 15% recurrence risk on genomic or other tests of tumor tissue?"

sandyrob | @sandyrob | Oct 5, 2022

I don't know what it's based on.

barbaraspanishtutor | @barbaraspanishtutor | Mar 4 8:55am

I took the latest genomic test in 2025 - Precision RT - (Prelude DX is the third party vendor) which is considered 96% accurate. It tests the excised sample after a lumpectomy with DCIS. It does the testing on the sample and also includes the other factors such as age, etc. It gives you two scores on a scale of 1-10 that is then translated into a percentage. The first is the high level number - your 10 year percentage of return with doing nothing - no meds or radiation. The second number is your 10 year percentage of return with radiation therapy. (They are now doing trials with tamoxifen). This test was ordered by my oncologist at a premier breast center in NYC at no cost to me.