Dates for Abstract Submission, Registration and Powerpoint Uploads The opening and closing dates for submitting abstracts, registering for the Symposium, and uploading powerpoint presentations will remain similar to those from previous years. Openings and Deadlines Abstract Submission Open: February 1st Abstract Submission Close: March 1st Early Registration Open: March 1st Early Registration Close: May 15th Late Registration Open: May 16th Powerpoint Presentation Upload Open: June 6th