Thyroid Patient Advocacy Support (TPA) wholeheartedly supports the AllTrials campaign. It is essential that all clinical trials are registered and that methodologies and results are placed in the public domain where they are freely available to all. This will support research efforts and ultimately lead to improved clinical treatment programmes. All research data must be freely to all, so that the public can be protected from harmful side effects of drugs. Our members need access to all the relevant data, not just the information people may choose to publish.