Journal
BLOOD
Volume 116, Issue 25, Pages 5600-5604Publisher
AMER SOC HEMATOLOGY
DOI: 10.1182/blood-2010-03-275917
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Funding
- National Cancer Institute, National Institutes of Health, Department of Health and Human Services [N02-CP-31003, N01-CO-12400]
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Trimodal or bimodal age-specific incidence rates for Burkitt lymphoma (BL) were observed in the United States general population, but the role of immunosuppression could not be excluded. Incidence rates, rate ratios, and 95% confidence intervals for BL and other non-Hodgkin lymphoma (NHL), by age and CD4 lymphocyte count categories, were estimated using Poisson regression models using data from the United States HIV/AIDS Cancer Match study (1980-2005). BL incidence was 22 cases per 100 000 person-years and 586 for non-BL NHL. Adjusted BL incidence rate ratio among males was 1.6x that among females and among non-Hispanic blacks, 0.4x that among non-Hispanic whites, but unrelated to HIV-transmission category. Non-BL NHL incidence increased from childhood to adulthood; in contrast, 2 age-specific incidence peaks during the pediatric and adult/geriatric years were observed for BL. Non-BL NHL incidence rose steadily with decreasing CD4 lymphocyte counts; in contrast, BL incidence was lowest among people with <= 50 CD4 lymphocytes/mu L versus those with >= 250 CD4 lymphocytes/mu L (incidence rate ratio 0.3 [95% confidence interval = 0.2-0.6]). The bimodal peaks for BL, in contrast to non-BL NHL, suggest effects of noncumulative risk factors at different ages. Under-ascertainment or biological reasons may account for BL deficit at low CD4 lymphocyte counts. (Blood. 2010; 116(25): 5600-5604)
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