1. Transformation and outcome of nodular lymphocyte predominant Hodgkin lymphoma : a Finnish Nationwide population-based study
- Author
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Kalashnikov, Ilja, Tanskanen, Tomas, Pitkäniemi, Janne, Malila, Nea, Jyrkkiö, Sirkku, Leppä, Sirpa, Tampere University, Health Sciences, HUS Comprehensive Cancer Center, ATG - Applied Tumor Genomics, Faculty of Medicine, Department of Oncology, Digital Precision Cancer Medicine (iCAN), Department of Public Health, and Research Programs Unit
- Subjects
Male ,Lymphoma, B-Cell ,LONG-TERM ,Epidemiology ,B-cell lymphoma ,FEATURES ,Incidence ,3122 Cancers ,Neoplasms. Tumors. Oncology. Including cancer and carcinogens ,Middle Aged ,Hodgkin Disease ,Survival Analysis ,DISEASE ,Article ,3142 Public health care science, environmental and occupational health ,3141 Health care science ,SURVIVAL ,Disease Progression ,Humans ,Female ,CELL LYMPHOMA ,Finland ,RC254-282 - Abstract
Nodular lymphocyte predominant Hodgkin lymphoma (NLPHL) is a rare B-cell malignancy associated with excellent survival. However, some patients experience histological transformation into aggressive large B-cell lymphoma. Population-based data on transformation in patients with NLPHL is limited. We conducted a nationwide population-based study to estimate the risk of transformation and relative survival in patients diagnosed with NLPHL in Finland between 1995 and 2018. We identified a total of 453 patients (median age, 48 years; 76% males) with the incident NLPHL from the Finnish Cancer Registry. The cumulative incidence of transformation was 6.3% (95% CI, 4.2-9.6) at 10 years. After adjusting for sex, age and year of diagnosis, transformation was associated with a substantially increased risk of death (HR 8.55, 95% CI 4.49−16.3). Ten-year relative survival was 94% (95% CI, 89%‒100%). The patients diagnosed at a later calendar year had lower excess risk of death (HR, 0.38 per 10-year increase; 95% CI, 0.15‒0.98). We conclude that while the 10-year relative survival for the patients with NLPHL was excellent in this large population-based cohort for the entire study period, transformation resulted in a substantially increased mortality compared with the patients without transformation. Our results also suggest a reduction in excess mortality over time. publishedVersion
- Published
- 2021