Dates Overview

We want to ensure that you never miss a deadline. From the opening of registration and hotel reservations to the abstract submission deadline, make sure to keep these dates in mind. 

OCTOBER 3, 2017 AT 11:59 PM EDT  

Abstract Submission Deadline

DECEMBER 6, 2017

Abstract Withdrawal Deadline

DECEMBER 20, 2017, AT 11:59 PM (EST)

Hotel Reservation and Early Registration Deadline
Want to receive your meeting badge in the mail before the meeting? Register by the early registration deadline! 

UNTIL JANUARY 10, 2018, AT 11:59 PM (EST)

Change your hotel reservation online

JANUARY 11, 2018

Hotel reservation changes and cancellations cannot be made online

JANUARY 12, 2018

Change your reservation by contacting the hotel directly

JANUARY 21, 2018, AT 11:59 PM (EST)

Registration Cancellation Deadline

JANUARY 22, 2018

Abstracts Released on


Final deadline to cancel hotel reservation by contacting the hotel directly

JANUARY 25-27, 2018

ASCO-SITC Clinical Immuno-Oncology Symposium

Future Meetings

February 28-March 2, 2019
San Francisco, CA