title: A single centre cohort experience with a new once daily antiretroviral drug.
abstract: BACKGROUND
  Atazanavir, an azadipeptide protease inhibitor (PI) with once daily dosing, a lack of insulin resistance, lipid increase, and gastrointestinal toxicities, is approved in combination with other antiretrovirals for the treatment of patients infected with HIV. Unboosted atazanavir is also used in highly active antiretroviral therapy (HAART) naive patients.
  
  
  METHODS
  The study prospectively followed up an established cohort of patients who received atazanavir, and for whom one year of follow up data were available.
  
  
  RESULTS
  It was found that use of atazanavir in intent to treat and on treatment analyses, maintained and led to virological suppression and increases in CD4 count in both PI naive and experienced patients. Virological failure occurred in 7% of patients and the main toxicity was hyperbilirubinaemia, which led to treatment withdrawal in 2%. Its efficacy and safety profile was similar to that seen in previous randomised studies investigating its use.
  
  
  CONCLUSIONS
  These data should provide reassurance for clinicians wishing to introduce a new antiretroviral into an established cohort.
authors: Department of HIV Medicine, Chelsea and Westminster Hospital, London, UK.
authors: J
authors: J
authors: Stebbing
authors: M
authors: M
authors: Bower
authors: P
authors: P
authors: Holmes
authors: B
authors: B
authors: Gazzard
authors: M
authors: M
authors: Nelson