Outcomes of human immunodeficiency virus-associated Burkitt lymphoma and diffuse large B-cell lymphoma treated in Australia: A report from the Australasian Lymphoma Alliance.

Antiretroviral therapy (ART) has improved outcomes for human immunodeficiency virus-associated non-Hodgkin lymphoma (HIV-NHL). This is an analysis of 44 patients with HIV with Burkitt lymphoma (HIV-BL) and diffuse large B-cell lymphoma (HIV-DLBCL) treated in Australia over a 10-year period (2009-2019) during the ART and rituximab era. At HIV-NHL diagnosis, the majority of presenting patients had adequate CD4 counts and undetectable HIV viral load <50 copies/mL. More than 80% of patients received chemotherapy with curative intent, rituximab, and concurrent ART with chemotherapy (immunotherapy). R-CODOX-M/IVAC or R-Hyper-CVAD (55%) were most commonly used in HIV-BL. CHOP (58%) was the most commonly used chemotherapy backbone for HIV-DLBCL, although 45% of patients received more intense chemotherapy regimens. Overall, 93% of patients who received curative therapy completed their intended course. The 2-year progression-free survival (PFS) and overall survival (OS) for the HIV-BL cohort was 67% and 67% respectively. The 2-year PFS and OS for the HIV-DLBCL cohort was 77% and 81% respectively. Treatment related mortality was 5%. In all, 83% of patients achieved a CD4 count of >0.2 ×10 /L 6 months after the end of treatment. Current Australian practice favours the treatment of HIV-BL and HIV-DLBCL similarly to the HIV-negative population with the use of concurrent ART, achieving outcomes comparable to the HIV-negative population.