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  • Title: A randomized comparative trial of continued abacavir/lamivudine plus efavirenz or replacement with efavirenz/emtricitabine/tenofovir DF in hypercholesterolemic HIV-1 infected individuals.
    Author: Moyle GJ, Orkin C, Fisher M, Dhar J, Anderson J, Wilkins E, Ewan J, Ebrahimi R, Wang H, ROCKET 1 (Randomized Open Label Switch for Cholesterol Elevation on Kivexa Evaluation Trial) Study Group.
    Journal: PLoS One; 2015; 10(2):e0116297. PubMed ID: 25658097.
    Abstract:
    BACKGROUND: Drug choice and metabolic changes with antiretroviral therapy contribute to cardiovascular risk in persons with HIV-1 infection. METHODS: A randomized, 12 week, open-label, comparative study of the impact on lipids of continuation of abacavir/lamivudine (ABC/3TC) plus efavirenz (EFV) or replacement with the single tablet regimen of EFV/emtricitabine/tenofovir DF (EFV/FTC/TDF) in hypercholesterolaemic subjects on successful antiretroviral therapy, with a 12-week extension with all subjects on EFV/FTC/TDF. RESULTS: 157 subjects received study drug, 79 switched to EFV/FTC/TDF and 78 subjects continued ABC/3TC+EFV. At Week 12, 73 subjects on ABC/3TC+EFV switched to EFV/FTC/TDF. The switch was well tolerated and no subject experienced viral rebound. Median baseline fasting total cholesterol was 6.32 mmol/L. 12 weeks following switch, the difference in the means (LSM) between treatment groups (EFV/FTC/TDF minus ABC/3TC+EFV) in total cholesterol change from baseline was -0.74 mmol/l (95% CI -1.00, -0.47, p < 0.001). The median change from baseline in total cholesterol following switch in the EFV/FTC/TDF arm was -0.86 mmol/l (p < 0.001) compared with +0.01 mmol/l (p = 0.45) in the continuation arm at Week 12. Significant (p < 0.001) differences between treatment groups following switch were seen for all lipid fractions from baseline to Week 12: LDL cholesterol (-0.47 mmol/L [-0.70, -0.25]), HDL cholesterol (-0.15 mmol/L [-0.21, -0.08]), triglycerides (-0.43 mmol/L [-0.75, -0.11]), and non HDL cholesterol (-0.56 mmol/L [-0.80, -0.31]). In the extension phase, similar declines in total cholesterol were observed with a median change from Week 12 to Week 24 of -0.73 mmol/L (p < 0.001). CONCLUSIONS: Switching from ABC/3TC+EFV to EFV/FTC/TDF in persons with hypercholesterolemia maintains virological control and significantly improves key lipid parameters. TRIAL REGISTRATION: ClinicalTrials.gov NCT00615810.
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