Explore the science

The only test proven to predict chemotherapy benefit2,3,9

The Breast Recurrence Score® test helps predict chemotherapy benefit in patients with HR+, HER2- early-stage breast cancer, regardless of nodal status.
A woman standing next to a card displaying a test score of 20.

How the Breast Recurrence Score assay works

  • Uses a patient’s unique tumor sample1
  • Assesses the expression of 21 genes1
    • 16 cancer-related genes
    • 5 reference genes 
    • Uses reverse transcriptase-polymerase chain reaction (RT-PCR) to analyze tumor RNA1
  • Uses tissue obtained at the time of core biopsy or surgical excision10
A woman standing next to a card displaying a 7% distance recurrence risk at 10 years.

Provides a genomic assessment1-4

  • Includes the estimated risk of distant recurrence with endocrine therapy alone1,3,4,5,6,7,8
  • Helps predict the benefit of adding chemotherapy to endocrine therapy2,3,5,6,7,8
A woman standing next to a card displaying a sliding scale of test results.

Determines quantitative single-gene scores11-13

  • Quantitative estrogen receptor (ER) score helps assess the magnitude of hormonal therapy benefit11,12
  • Provides additional supporting information, such as progesterone receptor (PR) and human epidermal growth factor receptor 2 gene (HER2) scores12,13

Real people. Real stories. Real insight.

Hear how the Oncotype DX Breast Recurrence Score test has made a difference for breast cancer patients.  

Trusted partners, better results

We’re proud to partner with some of the world’s leading institutions to help eradicate cancer.