Q: If I submit an abstract do I have to attend the congress?

A: All accepted abstracts are scheduled in the Scientific Program either as Oral, Poster or Publication only presentations. It is required that the presenting author of the abstract is registered for the congress. Only abstracts of registered participants will be scheduled in the Scientific Programme.

Q: I have submitted an abstract, when will I know if it has been accepted?

A: Only after all abstracts have been reviewed and allocated by the Scientific Committee will notifications be sent to the abstract submitters. Please refer to the Key Dates.

Q: How can I make changes to an abstract I have already submitted?

A: You may enter the Abstract Submission system with your username and password and make changes to your abstract until the submission deadline date. No abstract changes will be accepted after this date.

Q: If my abstract is accepted, where will it be published?

A: Copies of your accepted and registered abstracts will be published on the congress website and congress mobile App as well as in the Pediatric Blood & Cancer Journal (excluding late breaking abstracts). Please contact the Abstract Department for further details.

Q: I am having trouble logging into the abstract submission system – my username/password is not working

A: Please try one of the following options via the abstract submission page:

1. In case you are using “Internet Explorer”, please try other internet browser e.g. “Google Chrome” or “Mozilla”

2. When you copy and paste your user name and password please make sure there is no extra space at the beginning or the end of them

3. In case your password contains the letter “O” please make sure you do not type “0” (Zero) instead of the letter “O”

4. Please note that the username or ID received when registering for the congress is different to the abstract submission. Please use the abstract submission username or “create new account”

Q: Is the congress CME accredited?

A: Once the Scientific Programme has been finalized, an application for CME credits will be made. For details on the CME-CPD Accreditation and how to receive your CME/CPD Certificate, please visit the CME-CPD Accreditation page.

Q: How can I claim my CME-CPD credits after the congress?

A: You may receive your CME Certificate of Attendance after the congress. Please visit the CME-CPD Accreditation page for further details.
Each medical specialist should claim only those hours of credit that he/she actually spent in the educational activity.

Q: Can I claim CME credit for sessions watched online?

A: Yes, you watch sessions livestreamed in the virtual platform, or on demand for 3 months and you will be able to claim those hours that you actually spent in the educational activity up-to the maximum limit. 

Q: How do I register for the congress?

A: Registration for SIOP 2023 will open soon, through the dedicated page here.

Q: How can I pay the registration fees?

A: Payment of registration fees can be made by credit card or bank transfer. More information can be found here.

Q: Can I receive an invoice under the sponsoring Company/ Hospital’s name?

A: Yes. If you require an invoice to be issued to the sponsoring company, during the registration process you can write their billing details.

Q: Can I register for the congress without paying?

A: Yes, but your registration will be confirmed only when full payment is received.

Q: Can I register before the early fee deadline and pay later?

A: In order to benefit from the early fee registration discount, payment must be received before the deadline.

Q: Can I register during the congress?

A: Yes. registration is available during the congress days. Onsite fees will apply.

Q: What does my registration fees include?

A: For full detailed entitlements, please check the registration page once registration is open. 

Q: Will I receive a confirmation letter after I have finished registering?
A: Yes. A detailed confirmation letter and receipt will be sent to you by email as soon as payment is received and registration is completed. 

The SIOP Annual Congress brings together paediatric oncology professionals from all over the world dedicated to advancing treatment for children, adolescents, and young adults.

We encourage attendance from all over the world and we are happy to help with your travel planning by providing the following information.

Visa Process

SIOP can provide a letter stating your intent to attend the SIOP Annual Congress, which may assist you in obtaining your travel visa. Attendees may request a visa letter using the link during the registration process. Attendees must register and pay in full prior to requesting a visa letter. Visa letters are not available to attendees who are not paid in full or who have cancelled their registration.

The SIOP 2023 Ottawa Annual Congress is a registered event with the Immigration, Refugees and Citizenship Canada (IRCC). See more here.

Events registered with IRCC are issued a unique special event code to help track and monitor visa processing. Applicants should tag their applications with the event’s special event code, which can be found in the letter of invitation provided by the event organizer.

Please note that Visitor Visa (Temporary Resident Visa – TRV) applications are considered on a case-by-case basis based on the information presented by the applicant.

The onus is on the applicant to demonstrate they meet the requirements for a TRV.

While a special event code has been assigned to your event, it does not offer any advantage to the applicant, in terms of a positive visa outcome.

The applicant must meet all the eligibility criteria in order to receive a visa.

In urgent cases, the SIOP Office can also assist with a more tailor-made visa letter as opposed to the standard one and please contact info@siop-online.org for further assistance.

If you need another copy of your registration confirmation email, please contact our registration team at reg_siop23@kenes.com.

If you are unable to receive a visa to leave your country or are unable to enter Canada, contact us regarding a refund.

Please be aware that visa appointments at your local/regional Canadian Embassy or Consulate could take a significant amount of time to secure, so make sure to plan well ahead.

For more information about obtaining a visa, please visit the official website of the Government of Canada here

Visa-exempt (eTA eligible) travellers need an Electronic Travel Authorization (eTA) to board their flight to Canada. However, these travellers do not need an eTA if entering by land or sea – for instance driving from the U.S. or coming by bus, train, or boat, including cruise ship.

For more information about how to apply for the Electronic Travel Authorization (eTA) click here.

The Immigration, Refugees and Citizenship Canada (IRCC) guidelines for visa application are available in PDF format by clicking the button below:


Q: What are the key dates to mark in my calendar?

  • March 22, 2023 – Abstract Submission Deadline
  • July 18, 2023 – Early Registration Deadline
  • August 15, 2023 – Late Breaking Abstract Submission Deadline
  • October 11-14, 2023 – SIOP 2023 Congress

Blackout times apply during the main annual congress program (excl. Educational Day – Day -1)*during main meeting hours.

NB: if you are planning to invite any key opinion leaders or SIOP leadership to your press or media activity prior to the congress, please inform the SIOP office info@siop-online.org accordingly, since this might overlap with internal society meetings.

We will try to accommodate these requests in the best way we can.

You can book your flight for SIOP 2023 with the below promotion code. You have to access aircanada.com and enter your promotion code in the Promotion Code Box.

Promotion Code: N68GZWB1

Applicable Rules

The booking is to be made to the following city: Ottawa, YOW (CA)

The travel period begins Wednesday, October 04, 2023 and ends Saturday, October 21, 2023.

Travel is valid Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, Sunday.

For North America’ 5% applies on standard fares, 10% on flex fares & higher. For International Travel’ 10% on standard fares & higher