title: Long-term follow-up of asymptomatic HIV-infected patients who discontinued antiretroviral therapy.
abstract: BACKGROUND
  Whether asymptomatic human immunodeficiency virus (HIV)-infected patients can interrupt treatment remains unknown.
  
  
  METHODS
  We performed a prospective, observational study of 46 patients who started therapy with >300 CD4+ cells/mm3 and/or <70,0000 HIV-1 RNA copies/mL. Patients had been receiving highly active antiretroviral therapy (HAART) for at least 6 months. HAART was discontinued, and plasma HIV-1 RNA loads and CD4+ cell counts were determined at 4-month intervals.
  
  
  RESULTS
  At the time of HAART discontinuation, the median CD4+ cell count was 793 cells/mm3, and all patients had undetectable viral loads. A rapid decrease of 173 cells/mm3 in the median CD4+ cell count was observed during the first 4 months after HAART was stopped, followed by a slower decrease of 234 cells/mm3 between months 5 and 20. The decrease in the median CD4+ cell count early after HAART discontinuation was inversely correlated with the increase that occurred during receipt of therapy (r=-0.653) and with the count at the time of HAART discontinuation (r=-0.589). The decrease in the median CD4+ cell count after the fourth month without HAART was correlated with the nadir count before HAART initiation (r=-0.349) and the increase during treatment (r=-0.322). The median follow-up duration was 20 months. After 12, 24, and 36 months of observation, 33 patients (71.7%), 22 patients (47.8%), and 16 patients (34.7%), respectively, remained free of therapy. Adverse clinical events were not seen, and all patients who reinitiated HAART responded rapidly.
  
  
  CONCLUSIONS
  Selected asymptomatic HIV-infected patients can safely discontinue therapy for prolonged periods of time.
authors: Division of Infectious Diseases and Immunology, Department of Medicine, Fundación Jiménez Díaz, Universidad Autónoma de Madrid, Madrid, Spain. mlfernandez@fjd.es
authors: Manuel L
authors: ML
authors: Fernández Guerrero
authors: Pablo
authors: P
authors: Rivas
authors: Mercedes
authors: M
authors: Molina
authors: Rosa
authors: R
authors: Garcia
authors: Miguel
authors: M
authors: De Górgolas
mesh_terms: D000328:Adult; D019380:Anti-HIV Agents / Q000008:administration & dosage* / Q000191:economics / Q000627:therapeutic use*; D023241:Antiretroviral Therapy, Highly Active; D018791:CD4 Lymphocyte Count; D004334:Drug Administration Schedule; D005260:Female; D015658:HIV Infections / Q000188:drug therapy*; D006801:Humans; D008137:Longitudinal Studies; D008297:Male; D008875:Middle Aged; D012367:RNA, Viral / Q000097:blood; D013997:Time Factors; D019562:Viral Load
chemical_list: D019380:Anti-HIV Agents; D012367:RNA, Viral