Preventing HIV in people who inject drugs using lenacapavir and F/TDF

A Phase 2, Open-Label, Multicenter, Randomized Study to Evaluate the Pharmacokinetics and Safety of Twice Yearly Long-Acting Subcutaneous Lenacapavir for Pre-Exposure Prophylaxis in People Who Inject Drugs

Phase 2 Interventional Gilead Sciences · NCT06101342

This study is testing if a new combination of medications can safely help people who inject drugs in the U.S. prevent HIV.

Quick facts

PhasePhase 2
Study typeInterventional
Enrollment180 (estimated)
Ages18 Years and up
SexAll
SponsorGilead Sciences Industry-sponsored
Locations9 sites (Los Angeles, California and 8 other locations)
Trial IDNCT06101342 on ClinicalTrials.gov

What this trial studies

This clinical study aims to evaluate how lenacapavir (LEN) is processed in the body and to assess the safety of LEN combined with emtricitabine/tenofovir disoproxil fumarate (F/TDF) for pre-exposure prophylaxis (PrEP) in individuals who inject drugs in the United States. The primary objectives include characterizing the pharmacokinetics of LEN and determining the safety profile of both LEN and F/TDF in this population. Participants will be monitored for their response to the treatment and any potential side effects.

Who should consider this trial

Good fit: Ideal candidates for this study are individuals who inject drugs and have a recent history of sharing injection paraphernalia.

Not a fit: Patients who are already HIV positive or have a history of positive HIV test results will not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide an effective preventive measure against HIV for people who inject drugs.

How similar studies have performed: Other studies have shown promise in using similar approaches for HIV prevention, but this specific combination is being evaluated for the first time.

Eligibility criteria

Show full inclusion / exclusion criteria
Key Inclusion Criteria:

* Urine drug screen positive for any drug of misuse including, but not limited to, opioids (eg, fentanyl, heroin), stimulants (eg, cocaine, amphetamines), psychoactive drugs (eg, benzodiazepines), or a combination of these drugs.
* Evidence of recent injection (eg, track marks).
* Self-report of injection paraphernalia sharing in the prior 30 days.
* Hepatitis B virus (HBV) surface antigen (HBsAg) negative.
* Negative local rapid HIV-1/2 antibody (Ab)/antigen (Ag) test, central HIV-1/2 Ab/Ag, and HIV-1 RNA quantitative nucleic acid amplification testing (NAAT).
* Estimated glomerular filtration rate (GFR) at least 60 mL/min at screening according to the Cockcroft-Gault formula for creatinine clearance (CLcr).

Key Exclusion Criteria:

* Self-reported history of previous positive results on an HIV test.
* Any reactive or positive HIV test result at screening or enrollment, even if HIV infection is not confirmed.
* Coenrollment in any other interventional research study or other concurrent studies that may interfere with this study (as provided by self-report or other available documentation) without prior approval from the Medical Monitor/Joint Clinical Management Committee while participating in this study.
* Past or current participation in HIV vaccine or HIV broadly neutralizing antibody study unless individual provides documentation of receipt of placebo (ie, not active product).
* Prior use of long-acting systemic pre-exposure prophylaxis (PrEP) (including cabotegravir (CAB) or islatravir studies).
* Acute viral hepatitis A or acute or chronic hepatitis B or C infection.
* Have a suspected or known active, serious infection(s) (eg, active tuberculosis, etc).
* Evidence of moderate or severe liver fibrosis or a history of or current clinical decompensated liver cirrhosis (eg, ascites, encephalopathy, variceal bleeding). In individuals with active hepatitis C, Fibrosis-4 (FIB-4) score \> 3.25 (formula provided below).

Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Where this trial is running

Los Angeles, California and 8 other locations

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Pre-Exposure Prophylaxis of HIV Infection
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.