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Bone Mineral Density Changes in HIV-positive Females With Osteopenia Switching to Raltegravir — RALBAT  

HIV Infection Clinical Trial

Official title:
Switching HIV-positive Women on Tenofovir/Emtricitabine Plus Boosted Atazanavir to RALtegravir Plus Boosted ATazanavir: A Pilot Randomized Clinical Trial Investigating 48-weeks Changes in Bone Mineral Density

Clinical Trial Summary

Given the high prevalence of bone alteration in the course of HIV infection or antiretroviral treatment and the favourable properties of raltegravir the investigators designed this pilot randomized and controlled study. Adult female HIV-positive patients on successful treatment with tenofovir/emtricitabine plus atazanavir plus ritonavir will be randomized either to continue such a regimen or to switch to raltegravir plus atazanavir plus ritonavir. Bone mineral density changes will be compared in the two groups at 48 weeks: the hypothesis is that removing tenofovir and using tenofovir will increase bone mineral density at 48 weeks.

Clinical Trial Description

The objective is to assess the improvement in Bone Mineral Density and markers of bone turnover in women on TDF/FTC (tenofovir disoproxil fumarate/ emtricitabine)+ ATV/r (atazanavir/ritonavir) in a switch arm (RAL (raltegravir) + ATV/r) vs. an unchanged arm (TDF/FTC + ATV/r).

The clinical hypothesis is that removing tenofovir (associated to a boosted PI, and therefore in the worst clinical scenario) in both pre-menopausal and menopausal women could be beneficial and being associated with reduced bone mineral density loss measured by DEXA (densitometry)scan scores and markers of bone turnover. The underlying mechanism is believed to be the reduction in hyper-phosphaturia induced by proximal tubular dysfunction: therefore measuring renal tubular markers and hormones involved in calcium and phosphorus homeostasis (such as vitamin D and parathormone) will explain the suspected mechanism. ;

Study Design

Related Conditions & MeSH terms

Clinical Trial Details
NCT number NCT01902186
Study type Interventional
Source University of Turin, Italy
Contact
Status Terminated
Phase Phase 4
Start date September 2014
Completion date December 2016
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