Late-Breaking Abstracts

Late-Breaking Abstracts

Late-Breaking Abstracts are due Sept. 6, 2023 at 5 p.m. PDT

Late-breaking Abstracts no longer have an application requirement.
If a Late-breaking Abstract is not accepted, it will not be presented at the meeting.

Abstract Dates Abstract FAQsAbstract Reference Guide

Late-Breaking Abstract Information and Eligibility

 Late-breaking Abstract (LBA) submission is solely for abstracts with late-breaking data and not for abstracts submitted “late”. The Late-breaking Abstract deadline is not intended to be an extension of the general submission deadline. Late-breaking Abstracts highlight novel and practice-changing studies, and only apply to data that would have not otherwise have been presented as an abstract at the 38th Annual Meeting.

New in 2023: Late-breaking Abstracts (LBAs) no longer have an application requirement. LBAs do not need to submit an application or a place-holder abstract before the Regular/YIA Abstract deadline (June 27). Late-breaking Abstracts should be submitted during the LBA submission period, from July 10 – Sept. 6.

If a Late-breaking Abstract is not accepted, it will not be published or presented at the meeting. There is no longer an option for it to be considered as a Regular Abstract.

Examples of acceptable late-breaking abstracts include the following (in each case, results were not available or significant by the regular abstract submission deadline):

  • Results of a practice-changing prospective Phase III clinical trial
  • Phase II study showing anti-tumor activity in a novel context
  • An early clinical trial with novel proof-of-principle data
  • Demonstration of novel cancer biology with therapeutic implications

For late-breaking abstracts, authors need to justify why the abstract is considered late-breaking, for both clinical and laboratory-based studies.

The data in the abstract must not be published prior to SITC 2023.

Late-breaking Abstract Oral Presentation Opportunities

Late-breaking abstracts are considered for, but not limited to, oral abstract presentations during the Late-Breaking Abstract Sessions from 11:45 a.m.–12:15 p.m. on Friday, Nov. 3, 2023 and 11:25–11:55 a.m. on Saturday, Nov. 4, 2023.

Late-Breaking Abstract Reference Guide

View the reference guide for more information about late-breaking abstracts.

View Reference Guide

Submit a Late-Breaking Abstract

(LBA submissions closed on Sept. 6, 2023 at 5 p.m. PDT.)

Additional Abstract Submission Fields

Late-breaking Abstracts will have additional fields required to be completed during the submission process. LBAs will need to indicate if it is a clinical or lab-based study and will need to include the following information in their abstract:

Clinical Study

  • Closure date of the study
  • Primary clinical endpoint for analysis
  • Type of analysis

Lab-Based Study

  • Provide an explanation why the experiment(s) could not be completed before the regular abstract submission deadline, June 27, 2023, and is qualified as a late-breaking abstract

This information will not be included in the JITC Abstract Supplement, but will be provided to reviewers during the review process.

Important Late-Breaking Abstract Dates

July 10, 2023
Late-breaking Abstract Submission Site Opens

Sept. 6, 2023
Late-breaking Abstract Submission Site Closes at 5 p.m. PDT

Sept. 22, 2023
Late-breaking Abstract Notifications Sent

Sept. 29, 2023
Late-breaking Abstract Presentation Acceptance Confirmation Due/Deadline for Late-breaking Abstract Withdrawals (Withdrawals must be made by emailing to Indicate a Withdrawal)

Oct. 25, 2023
Late-breaking Abstract Title and Author Information Released at 9 a.m. EDT

Oct. 31, 2023
Embargo Lifted and Full Regular and Late-breaking Abstracts Made Public at 6 a.m. PDT/9 a.m. EDT. All accepted abstract are available in the JITC Supplement

Nov. 1–5, 2023
38th Annual Meeting & Pre-Conference Programs

Dec. 2023
Final Supplement Published in JITC