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Accessing and Navigating the Virtual Annual Meeting Platform
View the Online Meeting PlannerLate breaking and clinical trials abstracts now available for viewing

Notice Regarding Poster Uploads

We are aware that some poster presenters are having problems uploading their e-poster. Please note that the deadline for e-poster submission has been extended through 5:00 PM ET on Wednesday, March 31. If you are having a problem with your poster upload, please contact the Poster Help Desk at [email protected] or 217-398-1792. Poster presenters will be allowed to submit their poster once their login issue is resolved.

Abstract Release Dates

  • March 10, 2021: Regular abstract titles, authors, and text released
  • March 10, 2021: Clinical trial and late-breaking abstract titles and authors released
  • April 9, 2021: Clinical trial and late-breaking abstract text released (12:01 a.m. ET)
    [The text of abstracts selected for inclusion in the AACR press program with be released at the date and time of presentation.]

Poster Release / Availability

The e-poster website will be launched at 8:30 a.m. ET on Saturday, April 10, the first day of the virtual AACR Annual Meeting. All e-posters will be made available for browsing on this date. E-posters will remain available for viewing through Monday, June 21.

Publication in the Online Proceedings

Abstracts will be published in an online-only Proceedings supplement to the AACR journal Cancer Research after the completion of the AACR Annual Meeting. Only abstracts that are presented by registered attendees during the meeting will be published in this archival supplement.

View the Virtual Meeting Announcement
Read the Virtual Meeting FAQ

Notice Regarding Late-Breaking Abstract Submission

Please note: Abstracts are no longer being accepted for the 2021 Annual Meeting. The extended late-breaking abstract submission deadline was Tuesday, January 12, 2021.

The late-breaking abstract deadline for the AACR Annual Meeting was January 11, 2021. This deadline has traditionally been reserved for highly significant and timely findings in any area of cancer research that were not available at the time of the November 19 regular abstract deadline.

Clinical Trials Abstracts

Submission Deadline. All abstracts describing clinical trials (including placeholder abstracts) should be submitted as late-breaking abstracts. The deadline for clinical trials abstracts was January 11, 2021. Final data for placeholder abstracts were due February 4, 2021.

Publication Opportunity. For consideration of simultaneous publication in an AACR journal, please contact the AACR Publishing Division at [email protected].

Presentation of Proffered Papers at the AACR Annual Meeting

Every proffered abstract that has been accepted for publication in the online Proceedings must have a corresponding presentation at the meeting. Specifically, the author listed as the presenter for an accepted proffered paper must attend the corresponding session to discuss in detail the research outlined in the published abstract, according to the specific guidelines of the session. Presentation formats for 2021 include ePosters with enhanced engagement and networking opportunities and short talks in minisymposia. If, due to unforeseen circumstances, the designated presenter is unavailable to attend the session to present the paper, he or she must contact the AACR Program Development Department to designate a coauthor to serve as the presenter. If no abstract authors are available to present the data, the presenter must withdraw the abstract immediately by contacting the AACR Program Development Department at 215-440-9300 or [email protected]. Failure to comply with these regulations pertaining to abstract presentation may result in actions including, but not limited to:

  • The withdrawal of the abstract from the session
  • The removal of the abstract from the online Proceedings
  • The loss of future sponsorship privileges for the sponsor of the abstract
  • The loss of future abstract submission/authorship privileges for the presenter of the abstract

Deadline for Withdrawal of Abstracts

Requests to withdraw regular abstracts will be accepted through Monday, February 22, 2021. Requests to withdraw late-breaking or clinical trials abstracts will be accepted through Tuesday, March 9, 2021. Withdrawal requests must be sent by email to [email protected]. Withdrawal requests must include the Abstract Control Number and title as well as an explanation of the reason for withdrawal.