Call for Abstracts
ASTRO's 66th Annual Meeting
Washington, DC
General Instructions
Welcome to ASTRO's Abstract Submission site. ASTRO's Annual Meeting is the premier radiation oncology scientific event in the world and draws more than 11,000 attendees each year.
We employ rigorous guidelines for submissions, so please review all abstract guidelineson our website prior to your submission.
- Please proofread your abstract carefully for formatting, spelling, author affiliations, and data errors. Pay close attention to the author order and the presenting author designation.
- Review your confirmation email, as your abstract will be published exactly as submitted.
- You may make updates to your abstract until the submission deadline, Tuesday, February 24, 2026.
- The addition of new authors after the submission deadline is prohibited, as all disclosure acknowledgment statements must be submitted at the time of abstract submission.
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All authors must complete a Conflict-of-Interest Disclosure Statement, and it is the responsibility of the submitting author to ensure that all author and co-author disclosures are up-to-date and accurate. To assist in this process:
- Click here to download a PDF of the disclosure form. You can use this form to collect disclosures from the authors before entering them in the system. You do not need to submit this PDF form; you only need to enter the disclosure information into the online system.
- Authors may update their disclosure statements by logging into their MyASTRO account account and navigating to the My Resources section to update Statements of Disclosure. Once an author has submitted their disclosure statement in their MyASTRO account, it will populate across their submissions.
There is a $75 fee per abstract that is non-refundable. Notification of acceptance will be sent on May 14, 2026, to the presenting author only.
The review process is double-anonymized, so please do not include institution or commercial names in the title or body of your abstract.
Please mark your calendars for the key abstract deadlines below:
Abstract Submission Site Opens (including Late-Breaking Placeholder (shell): December 4, 2025
Abstract Submission Site Closes: February 24, 2026, at 11:59 PM (PT)
Late-Breaking Placeholder (shell) Abstract Submission Deadline: February 24, 2026, at 11:59 PM (PT)
Abstract Notification Sent to Presenting Author: May 14, 2026
Abstract Withdrawal Deadline: June 28, 2026
Late-Breaking Final Data Submission Deadline: July 10, 2026, at 11:59 PM (PT)
Technical Support
For help in submitting an abstract online, Contact Technical Support.