Tumour profiling tests to guide adjuvant chemotherapy decisions in early breast cancer

For people with lymph node-positive early breast cancer, more research is needed on the prognostic and predictive ability of tumour profiling tests:

• across different ethnic groups

• in men and trans, non-binary or intersex people.

Research is needed on the types and formats of information that would help people with lymph node‑positive breast cancer to understand all the factors that can support decisions on chemotherapy. Studies could involve people who have experienced the decision-making process.