The datasets generated and/or analyzed during the current study are not publicly available due to legal restrictions. Deidentified individual data used for the reported analysis are currently being shared with the PETRA (PET re-analysis; https://www.petralymphoma.org) consortium. Further data sharing could be made available on reasonable request, which should be addressed to the SAKK—Swiss Group for Clinical Cancer Research (https://www.sakk.ch/en/contact).