Changes or Cancellations

Last-minute changes happen. Reference the information below to understand the cancellation process for your registration or hotel reservation.

Registration Changes and Cancellations

Submit registration changes or cancellations

Registration Cancellation Deadline: Sunday, January 13, 2019, at 11:59 PM (EST)

  • Registration Cancellation Fee: $75
  • Refunds will be processed after the Symposium
  • Paper processing fees are nonrefundable
  • To retain Videos or Slides access, visit the bookstore
  • No refunds for cancellations received after the Sunday, January 13, 2019 11:59 PM (EST) deadline

Registration substitutions must be submitted via email by the person who paid for the registration or by the original attendee. 

Hotel Update

Hotel reservations, changes, or cancellations are no longer being accepted online. Changing or canceling an existing reservation? Contact the hotel directly at the phone number listed below. Cancellations must be made 72 hours prior to your arrival date to avoid cancellation fees 

Need to make a reservation? The following hotels might have availability; contact the hotel directly to inquire about available rooms. Discounted Symposium rates subject to availability. 

San Francisco Marriott Marquis 
780 Mission Street, San Francisco, CA 94103 
(415) 896-1600 

Hilton Union Square
33 O'Farrell Street, San Francisco, CA 94102
(415) 771-1400 

Hotel Nikko San Francisco
222 Mason Street, San Francisco, CA 94102
(415) 394-1111

Hotel Zelos 
12 Fourth Street, San Francisco, CA 94103 
(415) 348-1111 

Intercontinental Hotel San Francisco 
888 Howard Street, San Francisco, CA 94103, 
(415) 616-6500 

Parc 55 San Francisco 
55 Cyril Magnin Street, San Francisco, CA 94102 
(415) 392-8000 

Park Central San Francisco 
50 Third Street, San Francisco, CA 94103 
(415) 974-6400 

Questions? Contact Us  

Gastrointestinal Cancers Symposium Customer Service Center
11208 Waples Mill Road, Suite 112, Fairfax, VA 22030
Phone: 888-788-1522 (within the U.S.) or +1-703-449-6418 (outside the U.S.)
Fax: 703-563-2715
Registration Email: | Hotel Reservations Email: