Most clinical trials involving American children that violated FDAAA legal reporting requirements had not published outcomes in the scientific literature

Non-publication, incomplete publication and excessively slow publication of clinical trial outcomes contribute to research waste and can harm patients. In this cohort study, we used public [ClinicalTrials.gov][1] registry records to identify 81 paediatric clinical trials in the United States that appear to have violated the FDA Amendments Act 2007 (FDAAA) reporting requirements. We then searched the literature for the outcomes of these 81 trials and contacted trial sponsors about the status of results. We found that only 22/81 trials (27.2%) had made their results public in a full-length peer-reviewed publication, and that only 8/81 (9.9%) trials had done so within one year of their primary completion date. Our findings highlight the need for US Food and Drug Administration and the National Institutes of Health to systematically monitor FDAAA compliance and enforce reporting requirements. ### Competing Interest Statement The authors have declared no competing interest. ### Clinical Protocols ### Funding Statement This study did not receive any funding ### Author Declarations I confirm all relevant ethical guidelines have been followed, and any necessary IRB and/or ethics committee approvals have been obtained. Yes The details of the IRB/oversight body that provided approval or exemption for the research described are given below: UK Health Research Authority (HRA). Ethics waiver secured on 20 October 2022 and included in supplements archived online. I confirm that all necessary patient/participant consent has been obtained and the appropriate institutional forms have been archived, and that any patient/participant/sample identifiers included were not known to anyone (e.g., hospital staff, patients or participants themselves) outside the research group so cannot be used to identify individuals. Yes I understand that all clinical trials and any other prospective interventional studies must be registered with an ICMJE-approved registry, such as ClinicalTrials.gov. I confirm that any such study reported in the manuscript has been registered and the trial registration ID is provided (note: if posting a prospective study registered retrospectively, please provide a statement in the trial ID field explaining why the study was not registered in advance). Yes I have followed all appropriate research reporting guidelines and uploaded the relevant EQUATOR Network research reporting checklist(s) and other pertinent material as supplementary files, if applicable. Yes All data produced are available online at: [1]: http://ClinicalTrials.gov