HIV Infections Clinical Trial
Official title:
Is Dual Therapy as Effective as Triple Therapy Regarding CD4+/CD8+ Ratio Recovery and Improvement of Immune Activation and Inflammation in HIV-infected Patients With Consistent Plasma Viral Load Suppression (Tridual)
The persistence of an aberrant state of immune activation and inflammation (pIA) may contribute to the emergence of serious non-AIDS events which carry a higher morbimortality in HIV-infected patients. Although combined antiretroviral treatment (cART) reduces both cellular and soluble activation markers, it fails to completely control pIA despite consistent plasma viral load suppression. One of the mechanisms involved in pIA is may be an incomplete suppression of viral replication not reflected by plasma viral load, which only reflects a balance between viral replication and clearance of HIV-RNA. In addition, low-level viremia detected in most HIV-1-infected patients despite years on cART. Unintegrated 2-LTR HIV-DNA, and cellular associated HIV-RNAs, as products of active integrated DNA transcription, support this issue. Furthermore, the key rationales behind simplifying cART are a reduction of toxicities, lower risk of resistance mutations in case of virological failure and saving costs. One of these simplification strategies is a dual therapy which, based on the data up to date and in our clinical experience, has similar virological efficacy than cART. However, it is unknown if this strategy could increase the persistent HIV-1 replication and, therefore, pIA. The CD4+/CD8+ T cell ratio as a marker of immune recovery, the changes in T cell immune activation, senescence, exhaustion and apoptosis, and the cellular associated HIV-DNA and -RNA would answer the question if simplification to dual therapy would provide less control of residual HIV replication and, therefore, a detriment on pIA compared to triple therapy and, therefore, would worsen the patients' long-term prognosis.
Primary Outcome Measures: to evaluate the changes in the CD4/CD8 ratio, immune activation and other immunologic parameters at 48 weeks after switching to dual therapy based on dolutegravir plus emtricitabine o darunavir/cobicistat plus emtricitabine versus to continue on triple therapy based on integrase inhibitor plus 2 analogs Secondary Outcome Measures: to evaluate the changes in the CD4/CD8 ratio, immune activation and other immunologic parameters at 96 weeks after switching to dual therapy based on dolutegravir plus emtricitabine o darunavir/cobicistat plus emtricitabine versus to continue on triple therapy based on integrase inhibitor plus 2 analogs Method: randomized clinical trial in which adult HIV-infected patients with an undetectable plasma HIV-RNA for at least one year on a triple therapy based on integrase inhibitors plus two nucleos(t)ide analogs will be randomized in 3 groups (1:1:1) with 4 strata according to the previous time with undetectable viral load to: 1. Continue the previous ART based on Elvitegravircobicistat 150150 mg + tenofovir alafenamide 10 mg + emtricitabine 200 mg (Genvoya™) o Dolutegravir 50 mg + abacavir 600 mg + lamivudine 300 mg (Triumeq™) once daily. Or to switch to: 2. Darunavir/cobicistat (800150 mg) + 3TC (300 mg) once daily or 3. Dolutegravir (50 mg) + 3TC (300 mg) once daily. ;
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