Every clinical trial has to be registered, and there are several ways of searching for a clinical trial:
The main international clinical trial registry is clinicaltrials.gov. Every metastatic breast cancer trial in the world will be registered here, so it’s comprehensive, but in our experience not very patient friendly or easy to use.
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There is also a good American site for secondary breast cancer trials, metastatic trial talk. They also produce a regular online newsletter with the latest USA metastatic breast cancer research news which you can view on their website or sign up to. You don’t have to be a US citizen to access a trial, however the cost makes it unrealistic for most patients.
Here's a guide from the American Cancer Society for patients who are interested in clinical trials.
For a more local and accessible list of trials, look at the NIHR’s (National Institute of Health Research) database, Be Part of Research, and search under your breast cancer type.
CRUK also have a database of trials, but it doesn’t list every UK MBC trial.
Finally, there is a free service called Mytomorrows which will match you to relevant trials in the UK or Europe. You provide them with your treatment details, and they will send back a report of potential trials.
However you find a trial, it’s important that you take this information to your clinician who will advise on its suitability, and also provide a referral to it.