Attendees listen to presenter of an abstract poster

Review ASCO's abstract polices and submission requirements. Important dates in the abstract timeline appear below.

Abstract Submission Key Dates

March 11–12, 2015

Scientific Program Committee Meets to Select Abstracts

Late March

First Authors will receive Abstract Notifications by email

April 1, 2015

Late-Breaking Data Submission Deadline

April 7, 2015

First Authors of Late-Breaking Data Submissions Are Notified of Final Selection Decision

April 9, 2015

Abstract Withdrawal Deadline

April 20, 2015

Abstract Titles Released Via the iPlanner

May 13, 2015, at 5:00 PM ET

Abstracts Released on ASCO.org (More information on Abstract Release)

Past Key Dates

November 14, 2014

Abstract Submitter Opens

February 3, 2015

Abstract Submission Deadline