Multicenter studies of any kind are eligible, as well as single-center studies if they are randomized and have available results, according to ESR. Applications can be submitted here by 15 October. However, studies that have important results and new multicenter study designs may still be eligible for submission until 18 December, as long as they fulfill eligibility criteria and are judged by the CTiR coordinator and scientific paper chairperson to include important data that warrants late acceptance.
Further guidelines can be found here. Winners will be notified by the beginning of January 2016, and all accepted CTiR abstracts will be presented in a dedicated lunchtime session at ECR 2016 on 2 March.