Breast Cancer Clinical Trials

Where can I find a breast cancer clinical trial in the UK?

Start with your oncologist or breast care nurse. Cancer Research UK’s trial finder and NIHR’s Be Part of Research list studies you can discuss with them. Use the study finders below. Check whether a study is recruiting, where visits take place and whom to contact. A listing does not confirm that you can join.

Who can take part?

Each study has its own eligibility rules. These may involve the cancer type and stage, test results, previous treatment and general health. The research team must assess suitability. Ask about studies early, including when a treatment plan is being discussed; do not stop or postpone agreed treatment while searching on your own.

How does a trial compare with usual treatment?

A study may compare treatments or investigate tests, side effects or supportive care. Some trials allocate participants to groups by chance, called randomisation. Ask which treatments you could receive and whether a placebo is involved. You may not be able to choose a group.

There may be extra monitoring, appointments or tests. A treatment being studied may help, may not help, or may cause unexpected side effects. Ask your team to compare the possible benefits, uncertainties and practical demands with the care you would receive outside the study.

Questions to ask the research team

• What question does the study aim to answer, and why might it fit my diagnosis?
• What treatments might I receive, and what would you recommend if I do not join?
• Which risks are known, and what remains uncertain?
• How many extra visits, tests or overnight stays might be needed?
• Can you help with travel, interpreting or access needs, and which costs are covered?
• Who should I contact about a side effect, including at night or at weekends?
• How will my information and samples be used, and what happens when the study finishes?

Consent and changing your mind

You should receive information about the study and time to ask questions before deciding. Bring someone you trust if that helps, and ask for information in a format you can use. Joining is voluntary. You can decline or leave without giving a reason, and your team should discuss your ongoing care. Ask what withdrawing means for treatment, follow-up and information already collected.

Take the next step with your care team

Note the study name, registration number and contact details before your appointment. World Aid Network’s Breast Cancer Charity campaign provides this guide; we do not recruit for trials or assess eligibility. Outside the UK, ask your local cancer team about recognised trial registries and local care arrangements.