Study to Evaluate the Safety and Efficacy of Emtricitabine and Tenofovir Alafenamide (F/TAF) Fixed-Dose Combination Once Daily for Pre-Exposure Prophylaxis in Men and Transgender Women Who Have Sex With Men and Are At Risk of HIV-1 Infection

Phase 3Active Not RecruitingNCT02842086

Gilead Sciences5,399 enrolled

Overview

The primary objective of this study is to assess the rates of HIV-1 infection in Men (MSM) and transgender women (TGW) who have sex with men and who are administered daily emtricitabine/tenofovir alafenamide (F/TAF) or emtricitabine/tenofovir disoproxil fumarate (F/TDF) with a minimum follow-up of 48 weeks and at least 50% of participants have 96 weeks of follow-up after randomization.

Study Type

INTERVENTIONAL

Allocation

RANDOMIZED

Purpose

TREATMENT

Masking

DOUBLE

Enrollment

5,399

Conditions

Pre-Exposure Prophylaxis of HIV-1 Infection

Interventions

F/TAFDRUG

Eligibility

Sex: ALLMin age: 18 YearsHealthy volunteers:

Medical Language ↔ Plain English

Key Inclusion Criteria: * Must be at high risk of sexual acquisition of HIV * HIV-1 negative status * MSM and TGW (male at birth) who have at least one of the following: * condomless anal intercourse with at least two unique male partners in the past 12 weeks (partners must be either HIV-infected or of unknown HIV status) * documented history of syphilis in the past 24 weeks * documented history of rectal gonorrhea or chlamydia in the past 24 weeks * Adequate renal function: estimated glomerular filtration rate ≥ 60 mL/min according to the Cockcroft-Gault formula * Adequate liver and hematologic function: * Aspartate aminotransferase (AST) and alanine aminotransferase (ALT) ≤ 2.5 × upper limit of normal (ULN) and total bilirubin ≤ 1.5 mg/dL, or normal direct bilirubin * Absolute neutrophil count ≥ 1000/mm\^3; platelets ≥ 75,000/mm\^3; hemoglobin ≥ 10 g/dL Key Exclusion Criteria * Grade 3 or Grade 4 proteinuria or glycosuria that is unexplained or not clinically manageable. NOTE: Other protocol defined Inclusion/ Exclusion criteria may apply.

Locations (93)

Unnamed facility

Beverly Hills, California, United States

Unnamed facility

Los Angeles, California, United States

Unnamed facility

Los Angeles, California, United States

Unnamed facility

Newport Beach, California, United States

Unnamed facility

Oakland, California, United States

Unnamed facility

Outcomes

Primary Outcomes

Incidence of HIV-1 Infection Per 100 Person Years (PY)

The incidence of HIV-1 infection rate per 100 PY was calculated as the number of participants who became HIV infected during the study after the first dose of study drug divided by the sum of all participants' years (where a year is 365.25 days) of follow-up while at risk of HIV infection during the study. HIV-1 infection is defined by one or more of the following criteria of contributing HIV tests performed via central lab or local lab: * Serologic evidence of seroconversion (reactive screening HIV Antigen/Antibody or Antibody test, confirmed by reactive HIV-1/HIV-2 differentiation assay), excluding HIV vaccinated participants, or * Virologic evidence of HIV-1 infection (positive qualitative HIV-1 RNA test or any detectable quantitative HIV-1 RNA test), or * Evidence of acute HIV-1 infection (reactive p24 Antigen or positive qualitative or quantitative RNA, in the absence of reactive HIV-1 Antibody results)

Time frame: When all participants completed minimum follow-up of 48 weeks and at least 50% of the participants completed 96 weeks of follow-up after randomization or permanently discontinued from the study (maximum 125 weeks)

Secondary Outcomes

Percent Change From Baseline in Hip Bone Mineral Density (BMD) at Week 48 in the Blinded Phase

Percent Change = Change from baseline at Week 48 visit/value at baseline \* 100%.

Time frame: Baseline, Week 48

Percent Change From Baseline in Spine BMD at Week 48 in the Blinded Phase

Percent Change = Change from baseline at Week 48 visit/value at baseline \* 100%.

Time frame: Baseline, Week 48

Percent Change From Baseline in Urine Beta-2-Microglobulin to Creatinine Ratio at Week 48 in the Blinded Phase

Percent Change = Change from baseline at Week 48 visit/value at baseline \* 100%. For urine creatinine, value of \< 1 was handled as a missing value in its summary and the calculation of related ratios.

Time frame: Baseline, Week 48

Percent Change From Baseline in Urine Retinol Binding Protein (RBP) to Creatinine Ratio at Week 48 in the Blinded Phase

Time frame: Baseline, Week 48

Number of Participants by Urine Protein (UP) and Urine Protein to Creatinine Ratio (UPCR) Categories at Week 48 in the Blinded Phase

The UPCR was only calculated when corresponding UP ≥ 4.0 mg/dL. The UPCR "≤ 200 mg/g" category includes both participants with UP \< 4.0 mg/dL and participants with UPCR ≤ 200 mg/g.

Time frame: Baseline, Week 48

Change From Baseline in Serum Creatinine at Week 48 in the Blinded Phase

Time frame: Baseline, Week 48

Incidence of HIV-1 Infection Per 100 PY

Time frame: When all participants have 96 weeks of follow-up after randomization or permanently discontinued from the study (maximum 157 weeks)

Percent Change From Baseline in Hip BMD at Week 96 in the Blinded Phase

Percent Change = Change from baseline at Week 96 visit/value at baseline \* 100%.

Time frame: Baseline, Week 96

Percent Change From Baseline in Spine BMD at Week 96 in the Blinded Phase

Percent Change = Change from baseline at Week 96 visit/value at baseline \* 100%.

Time frame: Baseline, Week 96

Percent Change From Baseline in Urine Beta-2-Microglobulin to Creatinine Ratio at Week 96 in the Blinded Phase

Percent Change = Change from baseline at Week 96 visit/value at baseline \* 100%. For urine creatinine, value of \< 1 was handled as a missing value in its summary and the calculation of related ratios.

Time frame: Baseline, Week 96

Percent Change From Baseline in Urine RBP to Creatinine Ratio at Week 96 in the Blinded Phase

Time frame: Baseline, Week 96

Number of Participants by UP and UPCR Categories at Week 96 in the Blinded Phase

The UPCR was only calculated when corresponding UP ≥ 4.0 mg/dL. The UPCR "≤ 200 mg/g" category includes both participants with UP \< 4.0 mg/dL and participants with UPCR ≤ 200 mg/g.

Time frame: Baseline, Week 96

Change From Baseline in Serum Creatinine at Week 96 in the Blinded Phase

Time frame: Baseline, Week 96

Percentage of Participants Experiencing Treatment-Emergent Adverse Events

Time frame: First dose date up to the data cut for end of blinded treatment (maximum: 157 weeks)

Percentage of Participants Experiencing Any Treatment-Emergent Laboratory Abnormality

Time frame: First dose date up to the data cut for end of blinded treatment (maximum: 157 weeks)