The ClinicalTrials.gov protocol registration/results reporting system interface was originally developed prior to 2000 when ‘results reporting’ was not a requirement. Since the implementation of the ICMJE requirements and FDAAA enactment, this system has been adapted in many ways to meet challenging data requirements. Continuous enhancement occurs as various users make suggestions to the ClinicalTrials.gov staff. It is likely, however, that the tool will continue to maintain a form/function similar to the current tool.