All Regular Submission guidelines apply. In addition:

Late-breaking abstracts are defined as: “highly significant and timely findings in rheumatology that were not available by the regular abstract submission deadline”.

In the submission process, two additional fields have to be filled out by the authors:

• What makes your work highly significant?
• Why was the data not available by 15 January 2025?

To submit a late-breaking abstract, a non-refundable processing fee of EUR 100 will be charged at the time of online submission. Authors of rejected, incomplete or wrongly submitted abstracts will not be refunded.

Abstracts should not be submitted if the following applies:

• The abstract has been published or accepted for publication in a print or online journal before the LBA deadline (27 April 2025, 23:59 CEST). Publication of the abstract in a scientific journal after the submission deadline is not in conflict with presenting it at the EULAR 2025 Congress.
• The abstract was presented at a scientific meeting more than 12 months prior to EULAR 2025.

Abstracts accepted for the congress are subject to the EULAR Embargo rules. With the submission of an abstract, the authors agree to the embargo rules.

Late-breaking abstracts can be re-edited and modified up until the submission deadline (27 April 2025, 23:59 CEST). After the submission deadline, no modification will be accepted by the EULAR team. Please ensure that your late-breaking abstract does not contain any spelling, grammatical or scientific errors, as it will be reproduced exactly as submitted.

Late-breaking abstract acceptance will be as oral presentation; there will be no other acceptance categories. All accepted late-breaking abstracts will be presented onsite by the delegated presenting author.

Originality of data declaration and acceptance of exclusive licence rules must be completed in the submission process.