title: [HIV-1 therapy in the Netherlands; virological and immunological response to antiretroviral therapy].
abstract: OBJECTIVE
  To evaluate the effect of treatment of HIV-1 infection with combination therapy consisting of since 1996 in the Netherlands available protease and reverse transcriptase inhibitors.
  
  
  METHODS
  Prospective cohort study.
  
  
  METHODS
  In an observational clinical cohort of HIV-1-infected individuals, the short-term successful treatment end point of antiviral therapy including at least one antiretroviral drug licensed in the Netherlands since July 1, 1996 (protease inhibitors and reverse transcriptase inhibitors), was HIV-1 RNA plasma levels < or = 500 copies/ml (virological success). Cox proportional hazard models were used to identify prognostic markers for therapy success. The study included 2,148 infected individuals with a median follow-up of 135 weeks of treatment; 1,049 had been pre-treated with antiretroviral drugs before starting their new regimen and 1,099 were treatment naive.
  
  
  RESULTS
  Plasma HIV-1 RNA levels < or = 500 copies/ml at 24 weeks of treatment were seen in 61% of all patients. The chance of therapy success for naive patients was twice that for pre-treated patients (relative risk: 1.8; p < or = 0.001). Following the first 24 weeks, the chance of virological success was higher in the naive group (78% versus 63%; p < or = 0.001), and the number of naive patients failing therapy after initial success was smaller compared to pre-treated patients (22% versus 45%; p < or = 0.001). In the naive group, the CD4+ T-cell number increased from 239 to 440 (x 10(6) cells/l) in case of success, and decreased from 150 to 320 in case of treatment failure. HIV-1 related morbidity declined from 0.26 to 0.05 and mortality dropped from 0.07 to 0.03 per person-year of follow-up. Regimens were changed at least once in 76% of patients. Toxicity and therapy failure were the main reasons for regimen changes in naive and pre-treated patients, respectively.
  
  
  CONCLUSIONS
  A combination of antiretroviral drugs, including at least one of the drugs licensed since 1996, led to a drop in HIV-1 plasma concentrations. Morbidity and mortality also decreased. The chance of a better immunological and virological response to the new drug regimens was greatest in therapy-naive patients.
authors.affiliation: Afd. Klinische Epidemiologie en Biostatistiek, Academisch Medisch Centrum, afd. Humane Retrovirologie en Nationaal AIDS Therapie Evaluatie Centrum (NATEC), Meibergdreef 15, 1105 AZ Amsterdam.
authors.forename: M
authors.initials: M
authors.lastname: Jambroes
authors.forename: G J
authors.initials: GJ
authors.lastname: Weverling
authors.forename: P
authors.initials: P
authors.lastname: Reiss
authors.forename: S A
authors.initials: SA
authors.lastname: Danner
authors.forename: S
authors.initials: S
authors.lastname: Jurriaans
authors.forename: J H
authors.initials: JH
authors.lastname: ten Veen
authors.forename: M E
authors.initials: ME
authors.lastname: van der Ende
authors.forename: M
authors.initials: M
authors.lastname: Schutten
authors.forename: M M
authors.initials: MM
authors.lastname: Schneider
authors.forename: R
authors.initials: R
authors.lastname: Schuurman
authors.forename: J W
authors.initials: JW
authors.lastname: Mulder
authors.forename: A C
authors.initials: AC
authors.lastname: Kroes
authors.forename: J M
authors.initials: JM
authors.lastname: Lange
authors.forename: F
authors.initials: F
authors.lastname: de Wolf
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000188:drug therapy; D000328:Adult; D019380:Anti-HIV Agents / Q000008:administration & dosage*; D023241:Antiretroviral Therapy, Highly Active / Q000009:adverse effects / Q000379:methods*; D018791:CD4 Lymphocyte Count; D002985:Clinical Protocols; D004359:Drug Therapy, Combination; D005260:Female; D015658:HIV Infections / Q000188:drug therapy* / Q000276:immunology / Q000401:mortality / Q000821:virology; D017320:HIV Protease Inhibitors / Q000008:administration & dosage; D015497:HIV-1 / Q000187:drug effects* / Q000201:enzymology / Q000302:isolation & purification; D006801:Humans; D008297:Male; D008875:Middle Aged; D009026:Mortality / Q000639:trends; D009426:Netherlands / Q000453:epidemiology; D011446:Prospective Studies; D018894:Reverse Transcriptase Inhibitors / Q000008:administration & dosage
chemical_list: D019380:Anti-HIV Agents; D017320:HIV Protease Inhibitors; D018894:Reverse Transcriptase Inhibitors
vernacular_title: Behandeling van HIV-1 in Nederland: virologische en immunologische respons op antiretrovirale therapie.