Malignant Melanoma in People Living with HIV/AIDS: Can We Know More, Can We Do Better?

Thanks to the advancement in understanding of molecular mechanisms driving immune surveillance, we have now approached a revolutionary era for the treatment of malignant melanoma (MM). Meanwhile, people living with HIV/AIDS (PLWHA) are aging and non-AIDS-related cancers have become a leading cause of death. Both HIV infection and melanoma share common immune-pathological pathways: immune checkpoints are being targeted for melanoma immunotherapy and investigated as a "shock and kill" strategy for latency reversion among HIV-positive individuals. Nevertheless, a substantial lack of information exists on epidemiology, clinical features, and management of MM in HIV, due to compartmentalized approaches and poor awareness about the problem. In this narrative review, we aimed at analyzing available data regarding MM in PLWHA to point out key knowledge gaps and future opportunities from an integrated dermatology, oncology, and infectious diseases standpoint. To date, a strong association between HIV infection and MM risk still needs to be effectively demonstrated; nevertheless, once this cancer has developed in HIV-positive people, it shows more aggressive course, worse prognosis, and seemingly peculiar clinical and histological features. Despite these challenges, a syndemic framework should lead us toward a tailored and multidisciplinary approach not to miss valuable opportunities from the worst situations including the enrolment of HIV-positive patients in the ongoing trials with immune checkpoint inhibitors.

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