What is the primary function of Rukobia (fostemsavir) in HIV treatment?

Rukobia (fostemsavir) serves a distinct role in the treatment of HIV, specifically designed to manage cases of multidrug-resistant HIV. Its primary function is as an attachment inhibitor, working by binding to the HIV envelope protein and preventing the virus from entering the host's T-cells. This mechanism is particularly beneficial for patients who have developed resistance to multiple antiretroviral therapies, which makes it a crucial option when other treatments are ineffective.

The other functions mentioned—enhancing CD4 counts, treating opportunistic infections, or providing symptom relief—are not the main purpose of Rukobia. While maintaining and increasing CD4 counts is generally the goal of HIV treatment, this is typically achieved through the combined use of antiretrovirals, not specifically via Rukobia itself. Treating opportunistic infections is also part of comprehensive HIV care but falls outside the specific function of Rukobia. Finally, while some medications may provide symptom relief, they are not the primary role of Rukobia, which focuses solely on inhibiting the virus's ability to replicate.