Table 4.
Distinguishing characteristics of subjects with complete and incomplete immunologic responses (IRs)
| Parameter | Complete IR | Incomplete IR | P |
|---|---|---|---|
| PD-1 expression (%CD3+PD-1+)a | 8.59 ± 0.55b | 10.18 ± 1.15 | .264 |
| T cell activation (%CD4+ HLA-DR+)c | 8.61 ± 0.67 | 12.94 ± 2.45 | .093 |
| CCR5 expression (%CD4+CCR5+)b | 9.41 ± 0.77 | 12.10 ± 1.77 | .191 |
| IL-7 plasma levela | 17.46 ± 8.88 | 9.91 ± 2.84 | .706 |
| Age,a years | 33.46 ± 1.11 | 31.95 ± 1.67 | .503 |
| Pre-HAART CD4+ T cell count a,d,e | 477.75 ± 23.55 | 218.47 ± 26.12 | <.001 |
| IL-7-induced pSTAT5a | 86.7± 0.70 | 77.13 ± 4.78 | .005 |
NOTE. Data are the mean ± standard error. Subjects with complete and incomplete immunologic responses (IRs) were subjects who attained viral load suppression and who, at 5≥years after initiation of highly active antiretroviral therapy (HAART), had attained CD4+ cell counts of ≥500 and <500 cells/mm3, respectively. The length of follow-up did not differ between subjects with complete and incomplete IRs (see main text). IL, interleukin; PD-1, programmed death-1; pSTAT5, phosphorylated signal transducer and activator of transcription 5.
Forty-six subjects with complete IR; 20 subjects with incomplete IR.
Forty subjects with complete IR; 17 subjects with incomplete IR.
Thirty-four subjects with complete IR; 14 subjects with incomplete IR.
Expressed as the number of cells per cubic millimeter.
Mean of all CD4+ T cell count measurements during the 1 year before initiation of HAART.