What is an oncotype DX test used for?

The Oncotype DX test is a genomic test that analyzes the expression of a group of genes in breast cancer tissue. Its primary purpose is to help predict the likelihood of recurrence in hormone receptor-positive, early-stage breast cancer and to guide treatment decisions, particularly regarding the need for chemotherapy. By providing information on how aggressive the cancer may be, the test allows oncologists to tailor treatment more effectively, differentiating between patients who can safely forego chemotherapy and those who may benefit from its use.

While other tests may assess tumor size, evaluate overall health, or determine eligibility for clinical trials, the Oncotype DX specifically serves the purpose of recurrence prediction and treatment strategy, making it a vital tool in the management of breast cancer.