Limited occurrence of new grade 3-4 toxicity events with salvage regimens based on raltegravir and /or maraviroc: 96 weeks data from the ISS NIA cohort study.

Most of the available information on long-term toxicity of regimens based on raltegravir and/or maraviroc comes from controlled trials, and there is limited information on the occurrence and characteristics af adverse events in a setting of common clinical practice with frequent concomitant use of darunavir, enfuvirtide and etravirine. We anlyzed the number and characteristics of new adverse events grade 3-4 occurring in the first 96 weeks of treatment with salvage regimens based on raltegravir and /or maraviroc in an observational study.