HIV-related lung cancer in the era of highly active antiretroviral therapy

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Abstract
Objectives: To address the impact of highly active antiretroviral therapy (HAART) on the incidence and outcome of patients with HIV-related lung cancer. Design and subjects: Patients with HIV-related lung cancer were identified from a prospective HIV data base of 8400 patients diagnosed between 1986 and 2001. Patients diagnosed with HIV-related lung cancer before 1996 were in the pre-HAART cohort whereas the remainder were in the post-HAART cohort. Methods: The incidence of HIV-related lung cancer in the pre- and post-HAART cohorts was compared with the age and sex-matched population of south east England. Clinicopathological features, treatments and outcomes were also recorded. Results: The incidence of HIV-related lung cancer increased from 0.8 (95% CI 0.2–3.2)/105 patient-years follow-up in the pre-HAART era to 6.7 (95% CI 3.1–13.9)/105 patient-years follow-up in the post-HAART era. The age and sex-matched incidence of lung cancer in south east England was 0.75 (95% CI 0.63–0.87)/105 patient-years, suggesting that HIV-related lung cancer only occurred more frequently in the post-HAART era (relative risk 8.93, 95% CI 4.92–19.98). The patient characteristics and outcomes were similar in the pre- and post-HAART eras, although the time interval between testing HIV positive and developing HIV-related lung cancer was longer in post-HAART patients. Conclusion: In this study HIV-related lung cancer occurred more frequently in the post-HAART era, when compared with the HIV-negative population. Unfortunately, the outcome of these patients remains poor despite HAART.