Viro-immunological response of drug-naive HIV-1-infected patients starting a first-line regimen with viraemia >500,000 copies/ml in clinical practice.

Abstract:

BACKGROUND:Virological success (VS) and immunological reconstitution (IR) of antiretroviral-naive HIV-1-infected patients with pre-therapy viral load (VL) >500,000 copies/ml was assessed after 12 months of treatment according to initial drug-class regimens. METHODS:An observational multicentre retrospective study was performed. VS was defined as the first VL <50 copies/ml from treatment start. IR was defined as an increase of at least 150 CD4+ T-lymphocytes from treatment start. Survival analysis was used to estimate the probability and predictors of VS and IR by 12 months of therapy. RESULTS:428 HIV-1-infected patients were analysed. Patients were grouped according to the different first-line drug-classes used: a non-nucleoside reverse transcriptase inhibitor (NNRTI) plus two nucleoside reverse transcriptase inhibitors (NRTIs; NNRTI-group; n=105 [24.5%]); a protease inhibitor (PI) plus two NRTIs (PI-group; n=260 [60.8%]); a four-drug regimen containing a PI-regimen plus an integrase inhibitor (PI+INI-group; n=63 [14.7%]). Patients in the PI-group showed the lowest probability of VS (PI-group: 72.4%; NNRTI-group: 75.5%; PI+INI-group: 81.0%; P<0.0001). By Cox regression, patients in PI+INI and NNRTI-groups showed a higher adjusted hazard ratio (95% CI) of VS compared to those in the PI-group (PI+INI-group: 1.48 [1.08, 2.03]; P=0.014; NNRTI-group: 1.37 [1.06-1.78]; P=0.015). The probability of IR was 76.2%, and was similar among groups. Patients with AIDS showed a lower adjusted hazard ratio (95% CI) of IR compared to non-AIDS presenters (0.70 [0.54, 0.90]; P=0.005). CONCLUSIONS:In this multicentre retrospective study, patients with viraemia >500,000 copies/ml who start a first-line regimen containing PI+INI or NNRTI yield a better VS compared to those receiving a PI-based regimen.

journal_name

Antivir Ther

journal_title

Antiviral therapy

authors

Santoro MM,Di Carlo D,Armenia D,Zaccarelli M,Pinnetti C,Colafigli M,Prati F,Boschi A,Antoni AMD,Lagi F,Sighinolfi L,Gervasoni C,Andreoni M,Antinori A,Mussini C,Perno CF,Borghi V,Sterrantino G

doi

10.3851/IMP3197

subject

Has Abstract

pub_date

2018-01-01 00:00:00

pages

249-257

issue

3

eissn

1359-6535

issn

2040-2058

journal_volume

23

pub_type

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