title: Clinical, immunological and virological response to different antiretroviral regimens in a cohort of HIV-2-infected patients.
abstract: OBJECTIVE
  To assess the clinical, immunological and virological response and the emergence of resistance towards antiretroviral therapy (ART) in a cohort of HIV-2-infected patients.
  
  
  METHODS
  Observational study.
  
  
  METHODS
  HIV-2-infected patients residing in the Netherlands.
  
  
  RESULTS
  From 1995 to 2001 seven patients failed various ART regimens. The resistance mutations were analysed retrospectively. Development of mutations proved to be similar to that observed in HIV-1-infected patients, with the exception of a higher occurrence of the Q151M mutation within the reverse transcriptase gene. In a prospective study, comprising 13 consecutive naive HIV-2-infected patients, all patients achieved plasma HIV-2-RNA suppression below the detection limit (500 copies/ml). The antiretroviral regimen consisted of two nucleoside reverse transcriptase inhibitors (NRTIs) and indinavir, with a boosting dose of ritonavir; the median follow-up was 91 weeks. Two patients experienced a temporary virological rebound, while at the same time therapeutic drug monitoring showed sub-therapeutic plasma levels of indinavir.
  
  
  CONCLUSIONS
  Sustained viral suppression in HIV-2-infected patients can be achieved using an antiretroviral regimen of two NRTIs and boosted indinavir or lopinavir.
authors.affiliation: University Hospital Rotterdam, Dijkzigt, Rotterdam, The Netherlands. vanderende@inw2.azr.nl
authors.forename: Marchina E
authors.initials: ME
authors.lastname: van der Ende
authors.forename: Jan M
authors.initials: JM
authors.lastname: Prins
authors.forename: Kees
authors.initials: K
authors.lastname: Brinkman
authors.forename: Monique
authors.initials: M
authors.lastname: Keuter
authors.forename: Jan
authors.initials: J
authors.lastname: Veenstra
authors.forename: Sven A
authors.initials: SA
authors.lastname: Danner
authors.forename: Hubert G M
authors.initials: HG
authors.lastname: Niesters
authors.forename: Albert D M E
authors.initials: AD
authors.lastname: Osterhaus
authors.forename: Martin
authors.initials: M
authors.lastname: Schutten
mesh_terms: D000328:Adult; D000368:Aged; D019380:Anti-HIV Agents / Q000627:therapeutic use*; D018791:CD4 Lymphocyte Count; D024882:Drug Resistance, Viral / Q000235:genetics; D004359:Drug Therapy, Combination; D005260:Female; D005814:Genes, Viral; D005838:Genotype; D015658:HIV Infections / Q000188:drug therapy* / Q000276:immunology / Q000821:virology; D017320:HIV Protease Inhibitors / Q000627:therapeutic use; D015498:HIV-2 / Q000187:drug effects* / Q000235:genetics; D006801:Humans; D008297:Male; D008875:Middle Aged; D009154:Mutation; D011446:Prospective Studies; D012189:Retrospective Studies; D018894:Reverse Transcriptase Inhibitors / Q000627:therapeutic use; D016879:Salvage Therapy / Q000379:methods; D017211:Treatment Failure; D019562:Viral Load
chemical_list: D019380:Anti-HIV Agents; D017320:HIV Protease Inhibitors; D018894:Reverse Transcriptase Inhibitors