title: Recovery of CD4+ T Cells in HIV patients with a stable virologic response to antiretroviral therapy is associated with polymorphisms of interleukin-6 and central major histocompatibility complex genes.
abstract: We investigated whether polymorphisms in genes associated with HIV disease progression and/or immune activation affect CD4+ T-cell recovery in HIV patients who began combination antiretroviral therapy (ART) with advanced immunodeficiency and achieved stable control of plasma viremia. Patients with CD4 T-cell counts <300 cells/microL (n = 33) and >400 cells/microL (n = 37) on ART were compared. A multiple case-control logistic regression associated carriage of BAT1(1,2) or interleukin (IL)6-174(2,2) with low CD4 T-cell counts (P = 0.012). BAT1*2 uniquely marks the central major histocompatibility complex region of a conserved haplotype (HLA-A1,B8,BAT1*2,TNFA-308*2,DR3,DQ2). There was no association between alleles carried at CCR5Delta32, CCR5 59029, CCR5 59353, CCR2+190 (V64I), SDF1 3'UTR, IL1A+4845, IL1B+3953, IL4-589, IL10-592, IL10-R1+536, IL10-R1+1112, IL12B 3'UTR, TNFA-308, or TNFA-1031 and CD4 T-cell counts. We suggest that immune activation and/or CD4 T-cell apoptosis in HIV patients on effective ART is influenced by genetic factors.
authors.affiliation: Clinical Immunology and Biochemical Genetics, Royal Perth Hospital, Perth, Western Australia, Australia. sonferna@cyllene.uwa.edu.au
authors.forename: Sonia
authors.initials: S
authors.lastname: Fernandez
authors.forename: Ann A
authors.initials: AA
authors.lastname: Rosenow
authors.forename: Ian R
authors.initials: IR
authors.lastname: James
authors.forename: Steven G
authors.initials: SG
authors.lastname: Roberts
authors.forename: Richard C
authors.initials: RC
authors.lastname: Nolan
authors.forename: Martyn A
authors.initials: MA
authors.lastname: French
authors.forename: Patricia
authors.initials: P
authors.lastname: Price
mesh_terms: D000328:Adult; D000368:Aged; D019380:Anti-HIV Agents / Q000627:therapeutic use*; D001483:Base Sequence; D018791:CD4 Lymphocyte Count; D015496:CD4-Positive T-Lymphocytes / Q000276:immunology*; D016022:Case-Control Studies; D017931:DNA Primers; D005260:Female; D006678:HIV / Q000235:genetics / Q000302:isolation & purification; D015658:HIV Infections / Q000188:drug therapy / Q000235:genetics* / Q000276:immunology*; D006801:Humans; D015850:Interleukin-6 / Q000235:genetics*; D008285:Major Histocompatibility Complex; D008297:Male; D008875:Middle Aged; D016133:Polymerase Chain Reaction; D011110:Polymorphism, Genetic; D012367:RNA, Viral / Q000097:blood; D019562:Viral Load
chemical_list: D019380:Anti-HIV Agents; D017931:DNA Primers; D015850:Interleukin-6; D012367:RNA, Viral