title: Performance characteristics of HIV-1 culture and HIV-1 DNA and RNA amplification assays for early diagnosis of perinatal HIV-1 infection.
abstract: A plasma HIV-1 RNA amplification assay (RNA assay), a quantitative peripheral blood mononuclear cell (PBMC) microculture (culture), and a PBMC HIV-1 DNA amplification assay (DNA assay) were compared for diagnosis of HIV-1 infection in infants receiving zidovudine in Pediatric AIDS Clinical Trials Group protocol 185; assays were performed for all 24 infected and 100 uninfected infants. HIV-1 infection was defined as >or=2 positive cultures or positive antibody to HIV-1 at >or=18 months. Cultures were performed at birth and 6 and 24 weeks of age; DNA and RNA assays were performed on cryopreserved specimens. The sensitivity of culture and DNA and RNA assays at birth was 20.8%, 10.5%, and 26.7%, respectively. At older ages, sensitivity typically exceeded 80%, remaining highest for the RNA assay (>85%). Assay specificity was >99%. Positive predictive values exceeded 93% for each assay at each age; negative predictive values were highest (>90%) for the RNA assay. At birth (P < 0.005) and age 6 weeks (P < 0.001), a significantly larger proportion of infected infants were identified by means of the RNA assay than by the other assays. The diagnostic performance of the RNA assay matched or exceeded that of culture and the DNA assay. Given that RNA assays require less blood volume and yield rapid results, our study adds to existing data suggesting that RNA assays may be used for early diagnosis of HIV-1 infection in infants.
authors.affiliation: Institute of Human Virology, University of Maryland, Baltimore, USA. lambert@umbi.umd.edu
authors.forename: John S
authors.initials: JS
authors.lastname: Lambert
authors.forename: D Robert
authors.initials: DR
authors.lastname: Harris
authors.forename: E Richard
authors.initials: ER
authors.lastname: Stiehm
authors.forename: John
authors.initials: J
authors.lastname: Moye
authors.forename: Mary Glenn
authors.initials: MG
authors.lastname: Fowler
authors.forename: William A
authors.initials: WA
authors.lastname: Meyer
authors.forename: James
authors.initials: J
authors.lastname: Bethel
authors.forename: Lynne M
authors.initials: LM
authors.lastname: Mofenson
mesh_terms: D000163:Acquired Immunodeficiency Syndrome / Q000175:diagnosis*; D019380:Anti-HIV Agents / Q000627:therapeutic use; D004279:DNA, Viral / Q000235:genetics*; D015658:HIV Infections / Q000175:diagnosis* / Q000188:drug therapy; D015497:HIV-1 / Q000187:drug effects / Q000235:genetics / Q000254:growth & development* / Q000302:isolation & purification; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008214:Lymphocytes / Q000276:immunology / Q000821:virology; D019829:Nevirapine / Q000494:pharmacology* / Q000627:therapeutic use; D021141:Nucleic Acid Amplification Techniques; D011237:Predictive Value of Tests; D012367:RNA, Viral / Q000235:genetics*; D012680:Sensitivity and Specificity; D015215:Zidovudine / Q000627:therapeutic use
chemical_list: D019380:Anti-HIV Agents; D004279:DNA, Viral; D012367:RNA, Viral; D015215:Zidovudine; D019829:Nevirapine