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Table 3

V1–V2 Env IgG3 response rates (A) and magnitude (B) are associated with lower ORs and correlate with decreased risk of infection

Plasma HIV-1–specific IgG3 responses from 205 vaccinees, 41 infected vaccinees (cases), and 40 placebos at 2 weeks after the last vaccination were analyzed with clades A, B, and C V1–V2 antigens for risk of infection. (A) Case-control results from the categorical analysis (responder/nonresponder) for V1–V2 antigens. (B) Case-control results from the quantitative analysis of the magnitude of the response for V1–V2 antigens. P values <0.05 are in bold.

A. Correlation of IgG3 response rate with risk of infection in the RV144 case-control study
Sequence descriptionHIV-1 Env scaffoldUnivariate
IgA-adjusted
ORPORP
V1–V2 from RV144 vaccine boost (A244 gp120)AE.A244 V1–V2 tags0.4940.1620.3910.075
V1–V2 from clade CC.1086 V1–V2 tags0.5640.1420.5110.093
V1–V2 from Haynes et al. (2)gp70 B.CaseA2 V1–V20.5220.1310.4190.054
V1–V2 with mutation (169K)gp70 B.CaseA2 V1–V2 169K0.3540.0060.3170.003
B. Correlation of IgG3 magnitude with risk of infection in the RV144 case-control study
Type of Env protein/sequence informationHIV-1 Env scaffoldUnivariate
IgA-adjusted
ORPORP
V1–V2 from RV144 vaccine boost (A244 gp120)AE.A244 V1–V2 tags0.7910.1850.6820.045
V1–V2 from Haynes et al. (2)gp70 V1–V2 CaseA20.7490.0880.6890.034
V1–V2 from clade C gp120gp70.C. V1–V20.7530.1040.7030.049