Archive · 21 Jan 2026

Blood Test Predicts Breast Cancer Treatment Response

Blood Test Predicts Breast Cancer Treatment Response

Scientists have created a special blood test that can help doctors predict how well a breast cancer treatment will work for a patient.

This test looks for tiny pieces of cancer DNA in the blood.

The study found that if the test shows low levels of this DNA at the start of treatment or after four weeks, the treatment is more likely to work well.

This means doctors can switch to different treatments or join clinical trials if the current treatment isn't working.

The test could make treatment decisions faster and more personal, helping patients live longer with their cancer under control.

The research was done on advanced breast cancer, but it might also work for early-stage cancers.

Sources