The Veno-occlusive Disease (VOD) / Sinusoidal Obstruction Syndrome (SOS) Form, Form 2553, must be completed when VOD / SOS has been reported to have developed on the 100 Day Post-HCT Data Form (F2100) or the 100 Day Post-TED Form (Form 2450). Additionally, a Six Month VOD/SOS Form will come due if the center has reported VOD/SOS did not resolve during the 100 day reporting period (question 124). This form captures laboratory and pathologic studies at the time of diagnosis, treatment administered during the reporting period, and the maximum severity of VOD / SOS during the reporting period.

Q1-28: Diagnosis
Q29-42: Laboratory Studies at Diagnosis
Q43-98: Therapy
Q99-112: Maximum Severity
Q113-145: VOD / SOS Status
Q146-153: Management of Late Sequelae
Q154-163: Hospital Stay

Manual Updates:
Sections of the Forms Instruction Manual are frequently updated. The most recent updates to the manual can be found below.

Date Manual Section Add/Remove/Modify Description
4/7/2020 2553: VOD/SOS Add Added reporting guidance for scenario when drugs given for liver prophylaxis (red information box).
5/7/2018 2553: VOD/SOS Add Added an example on how to report the planned total daily dose for Defibrotide
5/24/17 2553: VOD/SOS Add Updated the description of the VOD / SOS Form on the title page by adding the text in red below:
The Veno-occlusive Disease (VOD) / Sinusoidal Obstruction Syndrome (SOS) Form, Form 2553, must be completed when VOD / SOS has been reported to have developed on the 100 Day Post-HCT Data Form (F2100) or the 100 Day Post-TED Form (Form 2450). Additionally, a Six Month VOD/SOS Form will come due if the center has reported VOD/SOS did not resolve during the 100 day reporting period (question 124). This form captures laboratory and pathologic studies at the time of diagnosis, treatment administered during the reporting period, and the maximum severity of VOD / SOS during the reporting period.
7/26/16 2553: VOD/SOS Add Version 1 Released
Last modified: Apr 07, 2020

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