Cabotegravir-Rilpivirine: The First Complete Long-Acting Injectable Regimen for the Treatment of HIV-1 Infection

Abstract

Objective: To review the efficacy and safety of cabotegravir (CAB) with rilpivirine (RPV) in the treatment of HIV-1 infection. Data Sources: A literature search was performed using PubMed and Google Scholar (2010 to January 2021) with the search terms cabotegravir and rilpivirine. Other resources included abstracts presented at recent conferences and the manufacturer’s website and prescribing information. Study Selection: All English-language articles of studies assessing the efficacy and safety of CAB with RPV were included. Data Synthesis: The combination of CAB, a new integrase strand transfer inhibitor, and RPV, an established nonnucleoside reverse transcriptase inhibitor, is the first long-acting dual therapy approved for the treatment of HIV-1 infection in adults who have achieved viral suppression on a standard antiretroviral therapy (ART). This regimen demonstrated comparable maintenance of viral suppression evaluated up to 160 weeks, with low rates of virological failure. CAB and RPV are available as suspension given intramuscularly in 2 separate injections every 4 weeks. Common adverse effects include injection site reactions, pyrexia, fatigue, and headache. CAB and RPV are also available as tablets given orally for bridging therapy. Relevance to Patient Care and Clinical Practice: This long-acting dual therapy represents an attractive option with a high barrier to resistance for adults who have achieved viral suppression on standard ART and who prefer monthly injections over daily oral therapy. Conclusions: CAB-RPV is the first complete long-acting injectable that provides a convenient way to maintain viral suppression with no negative effects on renal and bone health and few drug interactions.