Joe S Mendez1, Quinn T Ostrom2,3, Haley Gittleman2,3, Carol Kruchko3, Lisa M DeAngelis1,4, Jill S Barnholtz-Sloan2,3, Christian Grommes1,4. 1. Department of Neurology, Memorial Sloan Kettering Cancer Center, New York, New York. 2. Case Comprehensive Cancer Center, Case Western Reserve University School of Medicine, Cleveland, Ohio. 3. Central Brain Tumor Registry of the United States, Hinsdale, Illinois. 4. Department of Neurology, Weill Cornell Medical School, New York, New York.
Abstract
Background: There has been significant improvement in treatment outcomes of primary central nervous system lymphoma (PCNSL) at specialized centers over the past several decades; however, it is unclear if these changes have translated to benefits in the general population. Methods: In this study, we utilized 2 national databases to examine survival trends over time for PCNSL: the Central Brain Tumor Registry of the United States (CBTRUS, 2000-2013) and 18 registries from the Surveillance, Epidemiology, and End Results program (SEER, 1973-2013). Results: The annual incidence of PCNSL in 2013 was 0.4 per 100000 population (CBTRUS/SEER). Incidence increased from 0.1 per 100000 in the 1970s to 0.4 per 100000 in the 1980s, correlating with an increase in the diagnosis of patients ≥70 years (1973: 0.2 vs 2013: 2.1 [SEER]). Incidence rates differed greatly between young and elderly patients (age 20-29 y: 0.08 vs 70-79 y: 4.32 [CBTRUS]). Even though the median overall survival of all patients doubled from 12.5 months in the 1970s to 26 months in the 2010s, this survival benefit was limited to patients <70 years. Survival in the elderly population has not changed in the last 40 years (6 mo in the 1970s vs 7 mo in the 2010s, P = 0.1). Conclusion: The poor outcome seen in the particularly vulnerable elderly patient population highlights the need for clinical trials targeting the elderly in hopes of improving treatment strategies and survival.
Background: There has been significant improvement in treatment outcomes of primary central nervous system lymphoma (PCNSL) at specialized centers over the past several decades; however, it is unclear if these changes have translated to benefits in the general population. Methods: In this study, we utilized 2 national databases to examine survival trends over time for PCNSL: the Central Brain Tumor Registry of the United States (CBTRUS, 2000-2013) and 18 registries from the Surveillance, Epidemiology, and End Results program (SEER, 1973-2013). Results: The annual incidence of PCNSL in 2013 was 0.4 per 100000 population (CBTRUS/SEER). Incidence increased from 0.1 per 100000 in the 1970s to 0.4 per 100000 in the 1980s, correlating with an increase in the diagnosis of patients ≥70 years (1973: 0.2 vs 2013: 2.1 [SEER]). Incidence rates differed greatly between young and elderly patients (age 20-29 y: 0.08 vs 70-79 y: 4.32 [CBTRUS]). Even though the median overall survival of all patients doubled from 12.5 months in the 1970s to 26 months in the 2010s, this survival benefit was limited to patients <70 years. Survival in the elderly population has not changed in the last 40 years (6 mo in the 1970s vs 7 mo in the 2010s, P = 0.1). Conclusion: The poor outcome seen in the particularly vulnerable elderly patient population highlights the need for clinical trials targeting the elderly in hopes of improving treatment strategies and survival.
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