Associations between HLA Frequencies and Pathogenic Features of Human Immunodeficiency Virus Type 1 Infection in Seroconverters from the Amsterdam Cohort of Homosexual Men

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Abstract
HLA-disease associations may be important for understanding the pathogenesis of human immunodeficiency virus type 1 (HIV-1) infection. Therefore, 106 homosexual men from the Amsterdam Cohort Study on AIDS with a known date of HIV-1 seroconversion were serologically typed for HLA. Several significant associations between HLA type and pathogenic features of HIV-1 infection were observed: Subjects with fever and skin rash during primary HIV-1 infection showed an increased frequency of HLA-B62 (relative risk [RR], 5.8; P = .005). The frequency of HLA-B35 was increased in subjects with a rapid decline in CD4+ T lymphocytes (RR, 3.2; P = .021). Kaplan-Meier survival analysis revealed a significant association between HLA-B35 and a decrease in CD4+ cells to P = .01). The strongest association was found between HLA-DRI and AIDS-related Kaposi's sarcoma (RR, 22.5; P < .001), also confirmed in survival analysis (P = .001). In AIDS patients with only opportunistic infections, increased frequencies of HLA-DR3 (P = .011) and -DQ2 (P = .007) were observed. Finally, the occurrence of syncytium-inducing HIV-1 variants was significantly associated with HLA-DQ2 (P = .01).

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