Background
Limited comparative, prospective data exist regarding cardiovascular risk factors in HIV-infected women starting antiretroviral therapy (ART) in Africa.
Methods
In 7 African countries, 741 women with CD4<200 cells/mm3 were randomized to tenofovir/emtricitabine (TDF/FTC) plus either nevirapine (NVP, n=370) or lopinavir/ritonavir (LPV/r, n=371). Lipids and blood pressure (BP) were evaluated at entry, 48, 96, and 144 weeks. Multivariable linear and logistic regression models were used to evaluate mean risk factor changes and clinically relevant risk factor changes.
Results
At entry, both NVP and LPV/r groups were similar regarding age (mean=33.5 [SD=7.1] yrs), CD4 (129 [67] cells/mm3), and HIV-1 RNA (5.1 [0.6] log10 copies/ml). Nearly all women had normal lipids and BP except for HDL. Over 144 weeks, the LPV/r compared to NVP group had significantly greater mean lipid increases (e.g. non-HDL: +29 vs. +13 mg/dL) and smaller HDL increases (+12 vs. +21 mg/dL). In contrast, the NVP compared to LPV/r group had greater mean increases in BP (e.g. diastolic BP: +5 vs. −0.5 mmHg). Significantly more women assigned LPV/r had week 144 “abnormal” lipid levels (e.g. HDL 29.7% vs. 14.8% and triglycerides 28.6% vs. 8.2%), and significantly more women assigned NVP had “abnormal” BP (e.g. diastolic BP 22.7% vs. 6.5%). Most differences remained significant when adjusted for baseline risk factor, age, CD4, and HIV-1 RNA.
Conclusions
In HIV-infected women initiating ART in Africa, LPV/r+TDF/FTC was associated with less favorable changes in lipids, and use of NVP+TDF/FTC was associated with less favorable changes in BP.