ObjectivesTo analyse clinical features and predictors of survival for AIDS-related non-Hodgkin's lymphoma (NHL) in the era of highly active antiretroviral therapy (HAART), compared to earlier in the HIV epidemic.
MethodsAll AIDS-NHL cases diagnosed at three inner Sydney hospitals caring for people with AIDS during 1985-2001 were identified through medical record searches. Demographic, clinical, immunological and histopathological information was recorded. Year of NHL diagnosis was grouped into three periods, corresponding to whether monotherapy (1985)(1986)(1987)(1988)(1989)(1990)(1991), dual therapy (1992)(1993)(1994)(1995) or HAART (1996HAART ( -2001 was the main treatment for HIV infection. Statistical comparisons were made between the pre-HAART and post-HAART eras.
ResultsThree hundred cases of AIDS-NHL were identified. Divergent trends were identified for systemic and primary central nervous system (CNS) NHL. For systemic NHL, the CD4 count at NHL diagnosis increased markedly to 208 cells/mL in the post-HAART era (P 5 0.014) and there was a trend towards presentation as the first AIDS-defining illness (69%, P 5 0.053), and as earlier stage NHL disease (42%, P 5 0.048). Median survival time increased from 4.2 months in 1985-1991 to 19 months in the post-HAART era (Po0.001). In a multivariate model, predictors of poor survival from systemic NHL included: NHL diagnosis after another AIDS-defining illness (Po0.001), stage 4 NHL (Po0.001), presentation at extra lymphatic sites (P 5 0.001), and nonreceipt of chemotherapy (P 5 0.002). After adjusting for the factors, those diagnosed in the era of HAART had a significant 56% reduction in rate of death (Po0.001). In contrast, for CNS NHL, clinical features were little changed and survival did not improve in the era of HAART.
ConclusionsSystemic NHL is presenting earlier in the course of HIV disease, and at a less advanced NHL stage. There has been a marked improvement in survival in the era of HAART even after adjustment for other prognostic variables. In contrast, primary CNS NHL remains a disease which presents late in the course of HIV infection and is associated with a very poor prognosis.
IntroductionNon-Hodgkin's lymphoma (NHL) occurs at greatly increased rates in people with HIV compared to the general population and generally has a poor prognosis [1,2] While some studies have demonstrated an improved survival in AIDS-NHL since the use of HAART [11][12][13][14][15], others have found no substantial changes in survival [6,[16][17][18]. In light of these conflicting findings, this study analysed the clinical features of AIDS-NHL and patient survival in a population-based series in Sydney over the entire period of the AIDS epidemic in Australia.
Methods
Study populationAll AIDS-NHL cases diagnosed at the three inner Sydney hospitals caring for people with AIDS between January 1985 and January 2002 were included in the series. Patients were eligible for inclusion if they were resident in inner Sydney, while patients referred for specialized treatment from outl...