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I have a special interest in breast cancer.
I frequently think about a world in which predicting the course of breast cancer is more accurate.
I have written about the influences of artificial intelligence for those of us who work in medicine:
Now, a groundbreaking new artificial intelligence model appears to outperform our current tests for predicting the chances breast cancer will spread or metastasize.
Join me as I explore this potential game-changer in the management of cancer.
“I never think of the future — it comes soon enough.”
― Albert Einstein
Historically, the extent of breast cancer (stage) has been the leading prognostic factor.
The stage describes the amount of cancer in the body, where it is, and how far it has spread.
Early-stage breast cancer is less likely to come back (recur or relapse), so it has a more favorable prognosis.
The size of the primary cancer mattered, too.
Another important variable is biology:
We can input the variables described above into a calculator that spits out projections of outcomes.
For example, the United Kingdom Predict calculator gives us the odds an individual will die of breast cancer in 5, 10, and 15 years.
Breast cancers develop at varying rates.
Some will grow quickly, while others grow more slowly.
We need good prognostic models for oncologists like me to optimize management for a given patient.
More recently, we got genomic testing.
Genomic tests (assays) examine a cancer tissue sample to determine certain genes’ activity.
The activity level of the genes can help predict how likely the cancer is to grow and spread (metastasize).
Here are examples of breast cancer genomic tests:
We routinely use Oncotype DX testing for the majority of patients with hormone-driven (estrogen or progesterone receptor positive) and not HER-2 positive.
The impact of genomic testing has been extraordinary, with one study reporting information for 479 patients with breast cancer.
Doctors in Ireland gave chemotherapy to 45 percent of patients.
Chemotherapy use changed in inverse proportion to the availability of the genomic assay.
Of those patients in whom Oncotype DX was utilized, 57 percent were spared chemotherapy.
A new company called Ataraxis AI has created a computer program that can predict how quickly a person’s cancer might spread.
To teach the program, they teamed up with hospitals and looked at many pictures of tumors and patient information.
They also made the program more accurate by creating several versions and combining their predictions, which helped eliminate mistakes.
They tested the program on information from 3,500 patients and reported this:
Artificial intelligence (AI) was much better at predicting cancer spread than current tests.
For estimating the progression risk of breast cancer, compared with tests such as Oncotype DX, AI was up to 30 percent more accurate.
The researchers offer that they look forward to improving their model’s accuracy.
I look forward to the developers making their AI model to healthcare providers as early as 2025.
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