Simplification to single-tablet regimen of elvitegravir, cobicistat, emtricitabine, tenofovir DF from multi-tablet ritonavir-boosted protease inhibitor plus coformulated emtricitabine and tenofovir DF regimens: week 96 results of STRATEGY-PI.

Background: Antiretroviral therapy (ART) simplification to a single-tablet regimen can benefit HIV-1-infected, virologically suppressed, individuals on ART composed of multiple pills.

Objective: We assessed long-term efficacy and safety of switching to co-formulated elvitegravir, cobicistat, emtricitabine, and tenofovir disoproxil fumarate (E/C/F/TDF) from multi-tablet ritonavir-boosted protease inhibitor (PI + RTV) plus F/TDF (TVD) regimens.

Methods: STRATEGY-PI was a 96-week, phase 3b, randomized (2:1), open-label, non-inferiority study examining the efficacy, safety, and tolerability of switching to E/C/F/TDF from PI + RTV + TVD regimens in virologically suppressed individuals (HIV-1 RNA <50 copies/mL).

Simplification to Stribild vs continuation of RTV-boosted DRV with FTC and TDF in virologically suppressed HIV adults: a STRATEGY-PI subgroup analysis.

Introduction: Simplification to Stribild (STB) was statistically superior to continuation of a ritonavir-boosted protease inhibitor (PI+RTV) with emtricitabine and tenofovir DF (FTC/TDF) at week (W) 48 in virologically suppressed HIV adults (1). We report the W48 efficacy and safety of STB versus RTV-boosted darunavir (DRV) with FTC/TDF in suppressed subjects.

Material And Methods: Virologically suppressed subjects on PI+RTV with FTC/TDF regimens for ≥6 months were randomized (2:1) to switch to STB vs continue their PI regimen.

Murine models of Streptococcus pyogenes infection.

This unit describes procedures for testing virulence of Streptococcus pyogenes in mice. S. pyogenes is an important human pathogen and causes one of the most common childhood diseases.