Key points from article :
Genetic sequencing technology can identify genetic mutations that aren’t a threat to health.
By analyzing DNA doctors can prescribe personalized drug treatments.
As of 2020, there are now targeted therapy drugs for 30 kinds of cancer.
Oncologists also look in patient's blood post-surgery to see if all the cancer was removed during an operation.
In the future, the blood test could be part of physical exams for identifying cancer in the early stages.