Long-Term Cause-Specific Mortality in Hodgkin Lymphoma Patients - a Nationwide Danish Cohort Study

Introduction: The documented treatment-induced excess mortality in Hodgkin lymphoma (HL) has led to significant changes in treatment regimens aimed at maintaining efficacy while reducing toxicity. These modifications include the replacement of alkylator-based regimens with anthracycline-based combinations and the adoption of highly conformal radiotherapy. Danish and Nordic radiation oncologists were pioneers in implementing these changes nationwide 10-15 years earlier than most other nations. These early adaptations make Danish HL data uniquely valuable for assessing long-term mortality in a cohort where modern treatment regimens have been implemented nationwide throughout the entire study period. The impact of these treatment modifications on mortality risk in HL survivors remains unclear, therefore, this study aims to assess cause-specific mortality among HL patients treated with contemporary strategies.