Disparities in conditional net survival among non-Hodgkin lymphoma survivors: a population-based analysis

Abstract

We evaluated the association of baseline prognostic factors with conditional net survival among survivors of six subtypes non-Hodgkin lymphoma using the SEER program data from 2000–2012. Among 2-year survivors, further prognosis markedly improved in Burkitt’s (BL) and diffuse large B-cell lymphoma (DLBCL), and became the same as for follicular lymphoma (5-year net survival ≥ 85%). Mantle cell lymphoma (MCL) demonstrated the worst prognosis of all studied histologies up to 5 years of survivorship. Age and stage lost prognostic significance in BL within 2 years from diagnosis. Racial disparities in net survival disappeared within 2 years for all subtypes, except in chronic lymphocytic leukemia, where black patients had persistently worse prognosis, and in MCL, where they had unexpectedly better prognosis than other races after 2 years. Many baseline factors may lose their initial prognostic value for lymphoma survivors, which should be considered when counseling patients about their prognosis and long-term surveillance.

Keywords:

• Burkitt lymphoma
• conditional survival
• diffuse large B-cell lymphoma
• epidemiology
• non-Hodgkin lymphoma
• relative survival

Acknowledgements

This study used the SEER database. The interpretation and reporting of these data are the sole responsibility of the authors. The authors acknowledge the efforts of the Applied Research Program, National Cancer Institute; Information Management Services Inc; and the SEER program tumor registries in the creation and maintenance of the SEER database as a research resource.

Potential conflict of interest

Disclosure forms provided by the authors are available with the full text of this article at http://dx.doi.org/10.3109/10428194.2015.1102246.