Pre-Exposure Prophylaxis of HIV Infection
Conditions
Brief summary
The goal of this clinical study is to look at how lenacapavir (LEN) passes through the body and to assess the safety of LEN and emtricitabine/tenofovir disoproxil fumarate (F/TDF) for prevention of HIV in the cisgender women in the US. The primary objectives of this study are: 1) to characterize the pharmacokinetics (PK) of LEN in United States (US) cisgender women; 2) to evaluate the safety of LEN and F/TDF for pre-exposure prophylaxis (PrEP) in US cisgender women; and 3) to evaluate the general acceptability of LEN injections and oral F/TDF in US cisgender women.
Interventions
Tablets administered orally without regard of food
Injection administered subcutaneously
200/300mg fixed dose combination (FDC) tablets administered orally
Sponsors
HIV Prevention Trials Network
Gilead Sciences
Study design
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
PREVENTION
Masking
NONE
Eligibility
Sex/Gender
FEMALE
Age
18 Years to No maximum
Healthy volunteers
Yes
Inclusion criteria
Key Inclusion Criteria: * Report at least 1 episode of condomless vaginal or anal sex with a cisgender man in the 12 months before enrollment. * Hepatitis B virus (HBV) surface antigen (HBsAg) negative. * Self-report one or more of the following in the past 12 months (except for incarceration, which could have occurred in the past 5 years): 1\) Noninjection recreational drug use (ecstasy, cocaine, crack cocaine, methamphetamine, ketamine, 3,4-methylenedioxy-methamphetamine, or prescription drugs apart from those prescribed by a licensed provider); 2) Alcohol dependence (defined as Cut Down, Annoyed, Guilty, and Eye Opener score of 2); binge-drinking, defined as 4 or more drinks at a time; 3) History of STIs, such as gonorrhea, chlamydia, or syphilis; 4) Exchange of sex for commodities, such as drugs, money, or shelter; 5) Incarceration (jail or prison \> 24 hours within the past 5 years); 6) Two or more sexual partners who were assigned male at birth; 7) Sexual partner assigned male at birth with history of either injection or noninjection recreational drug use, sexually transmitted infections (STIs), human immunodeficiency virus (HIV) diagnosis or unknown HIV status, additional sex partners during the course of his sexual relationship with the individual, or incarceration (jail or prison \> 24 hours within the past 5 years) * 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. * One or more reactive or positive HIV test result at screening or enrollment, even if HIV infection is not confirmed. * 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. * Severe hepatic impairment or a history of or current clinical decompensated liver cirrhosis (eg, ascites, encephalopathy, variceal bleeding, etc). Note: Other protocol defined Inclusion/
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| Willingness to Use LEN and F/TDF as PrEP as Assessed by Percentage of Participants with Willingness to Use Questionnaire Responses | Up to Week 52 | To assess the willingness to use the study drug, participants will complete the questionnaire including a question on willingness to use the assigned study drug on an ordinal 5-category scale with a response of: Definitely Yes, Probably yes, Not sure/undecided, Probably No, or Definitely No. |
| General Acceptability of LEN and F/TDF as PrEP as Assessed by Percentage of Participants with Acceptability Questionnaire Responses | Up to Week 52 | To assess the acceptability of the study drug, participants will complete the questionnaire including a question on general acceptability of the assigned study drug on an ordinal 5-category scale with a response of: Completely unacceptable, Unacceptable, No opinion, Acceptable, or Completely acceptable. |
| Satisfaction With Use of LEN and F/TDF as PrEP as Assessed by Percentage of Participants with Satisfaction Questionnaire Responses | Up to Week 52 | To assess the satisfaction with use of the study drug, participants will complete the questionnaire including a question on satisfaction with use of the assigned study drug on an ordinal 5-category scale with a response of: Very satisfied, Satisfied, Neutral, Dissatisfied, or Very dissatisfied. |
| Pharmacokinetic (PK) Parameter: Ctrough for Lenacapavir (LEN) at the End of Week 26 | Week 26 | Ctrough is defined as the concentration at the end of the dosing interval. |
| PK Parameter: Ctrough for LEN at the End of Week 52 | Week 52 | Ctrough is defined as the concentration at the end of the dosing interval. |
| Percentage of Participants Experiencing Treatment-emergent Adverse Events (TEAEs) | First dose date up to 30 days post last dose at Week 78 | — |
| Percentage of Participants Experiencing Treatment-emergent Clinical Laboratory Abnormalities | First dose date up to 30 days post last dose at Week 78 | — |
Secondary
| Measure | Time frame |
|---|---|
| Number of Participants with Adherence to F/TDF, as Assessed by Adherence Levels Based on Tenofovir diphosphate (TFV-DP) Concentrations in Dried Blood Spot (DBS) | Up to Week 78 |
| Number of Participants with Adherence to LEN, as Assessed by on-time LEN Injections Received | Up to Week 26 |
Countries
United States
Outcome results
None listed