Cutaneous malignancies among HIV-infected persons

Area of Science:

• Oncology
• Infectious Diseases
• Dermatology

Background:

• Increasing life expectancy in HIV-positive individuals shifts focus to non-AIDS-related comorbidities.
• Cancers are a significant cause of morbidity and mortality in the growing HIV-positive population.
• Limited data exist on cutaneous cancers in HIV-infected persons, particularly concerning HIV-specific factors.

Purpose of the Study:

• To evaluate the incidence rates of cutaneous malignancies in HIV-infected individuals.
• To identify factors associated with the development of cutaneous malignancies in this population.

Main Methods:

• Analysis of prospectively collected data from a large HIV study (1986-2006) with 4490 participants.
• Utilized Poisson regression and Cox proportional hazards models to assess incidence and risk factors.

Main Results:

• Six percent of HIV-infected participants developed cutaneous malignancies over 33,760 person-years.
• Incidence of non-AIDS-defining cancers (NADCs), like basal cell carcinoma, now surpasses AIDS-defining cancers (e.g., Kaposi sarcoma) since HAART.
• Increasing age and race were associated with NADC development; African Americans and other races showed lower risk compared to white/non-Hispanic individuals.
• No significant association found between NADCs and CD4 counts, HIV RNA levels, or HAART receipt.

Conclusions:

• Non-AIDS-defining cancers (NADCs) are the predominant cutaneous malignancies in the HIV-infected population.
• Cutaneous NADCs appear primarily associated with traditional risk factors like aging and skin color.
• Immune function and highly active antiretroviral therapy (HAART) do not show a significant association with NADC development in this cohort.