Abstract submissions are closed.

Selected presenters will be notified by the end of November 2021. Meeting registration, poster printing, travel, and hotel accommodations are the responsibility of the presenter.

Abstracts will be presented at the SIO2022 Annual Scientic Meeting in the following categories:

  • Basic Science
  • Education
  • Genitourinary
  • Guidance & Targeting
  • HCC
  • Imaging
  • Liver Metastases
  • Technology
  • Thoracic
  • Other


While SIO does not have a policy that limits prior presentation of data, we are excited to feature SIO Debut Presentations at the 2022 Annual Scientific Meeting in San Francisco. SIO Debut Presentations, taking place on Saturday 5 February 2022, will feature IO abstracts submitted and presented for the first time in a scientific meeting.

Scientific Oral Abstract presentations will take place on the following dates from 5:15 pm - 6:15 pm Pacific Time:

  • Friday 4 February 2022 - Scientific Oral Abstracts
  • Saturday 5 February 2022 - SIO Debut Presentations
  • Sunday 6 February 2022 - Scientific Oral Abstracts

Acceptance of an abstract by the reviewing committee obligates the author to attend the SIO2022 meeting to present the oral and/or poster. If circumstances prevent the presenting author’s attendance, the author must arrange for the work to be presented by a substitute, preferably a co-author. If you wish to withdraw your abstract, you must submit your request in writing by Monday 3 January 2022 to and include the abstract number, title, and presenting author. Failure to comply may result in ineligibility for future SIO meetings.

On rare occasions, presenters scheduled to present their abstract fail to show up without notifying SIO. When presenters do not attend to present their abstract, the planning efforts of the Scientific Chair and Program Committee to provide a quality program are diminished significantly, significant costs are imposed and the audience is unnecessarily disappointed. SIO staff will audit all abstracts for no-show, and any no-shows may result in ineligibility for future SIO meetings.

For questions regarding the abstract process, please contact SIO at or (202) 367-1164.