Document 0062 DOCN M9470062 TI HIV-1/HIV-2 seronegativity in HIV-1 subtype O infected patients [see comments] DT 9409 AU Loussert-Ajaka I; Ly TD; Chaix ML; Ingrand D; Saragosti S; Courouce AM; Brun-Vezinet F; Simon F; Virology Department, Bichat-Claude Bernard Hospital, Paris,; France. SO Lancet. 1994 Jun 4;343(8910):1393-4. Unique Identifier : AIDSLINE MED/94254523 CM Comment in: Lancet 1994 Jun 4;343(8910):1376 AB Nine patients with atypical HIV-1 western blot profiles were diagnosed as having HIV-1 subtype O infection. All the patients were living in France; eight originated from Cameroon and one from France. Lymphocyte DNA amplification by the polymerase chain reaction was only positive when HIV-1 subtype O specific primers were used. Preliminary sequence analysis of amplified products and serological reactivity against a specific subtype O synthetic env peptide confirmed HIV-1 subtype O infection. HIV-1/HIV-2 enzyme-linked immunosorbent assays, especially those based on env peptides or on the sandwich format, can be negative in HIV-1 subtype O infection. DE Acquired Immunodeficiency Syndrome/DIAGNOSIS/*MICROBIOLOGY Adult Blotting, Western Cameroon Enzyme-Linked Immunosorbent Assay France Gene Amplification Human *HIV Seronegativity HIV-1/*CLASSIFICATION/GENETICS/IMMUNOLOGY HIV-2/*CLASSIFICATION/GENETICS/IMMUNOLOGY Middle Age Polymerase Chain Reaction JOURNAL ARTICLE SOURCE: National Library of Medicine. NOTICE: This material may be protected by Copyright Law (Title 17, U.S.Code).