Trends in survival of patients with stage I/II Burkitt lymphoma in the United States: A SEER database analysis.

The treatment strategy for management of Burkitt lymphoma (BL) has evolved during the past decades and the clinical outcome for this disease as a whole has also improved. Due to limited information reported on survival trends of patients with stage I/II (limited-stage) BL, here we used the Surveillance, Epidemiology, and End Results (SEER) database to conduct our study. The time period was divided into two eras (1983-2001 and 2002-2014) as the recent era reflected more intensive chemotherapy regimens, the availability of rituximab, the widespread use of antiretroviral therapy (ART) and improvements in supportive care. Patients with limited-stage BL had a significantly better 5-year overall survival (OS) in the 2002-2014 era in both univariate analysis and multivariate analysis, compared with those in the 1983-2001 era (64.1% vs 57.4%). However, clinical outcomes of elderly patients (≥60 years) and children patients (0-19 years) did not significantly improve. Older age and race of black were correlated with poorer OS in multivariate analysis, whereas sex, primary sites, and application of radiotherapy did not significantly influence OS. In conclusion, the prognosis of patients with limited-stage BL has improved in the 2002-2014 era, but the outcome was still much poorer in elderly patients, which needs to be improved by identifying newly molecular-targeted drugs and developing novel personalized therapeutic approaches.