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co-formulated TAF/ FTC

Phase 2

HIV Infections | Small molecule | Infectious Disease |Gilead Sciences, Inc.|Last Updated: Oct 27, 2025

Success Probability
Approval Probability 71%
TA Base Rate26%
Adjusted LOA41%
ML RiskLOW_RISK
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Market & Valuation
rNPV $3.2B
Market Size $9.4B
Revenue Basis $1.6B
Competitors 6
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Trial Design
RandomizedCONTROLLED
Total Trials1
Total Enrollment54
FDA Designations
No designations recorded
Clinical Trials (1)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT05140954The Women TAF-FTC Benchmark StudyPHASE2 COMPLETED 54Mar 28, 2023Dec 19, 2023Oct 27, 20251 Kenya
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Study Endpoints
Primary Endpoints
Frequency of Adverse Events
Assessed through the 10 week DOT dosing period

The frequency of graded adverse events by arm, including emergent HIV infection during the study period.

Concentrations of Tenofovir Disphosphate (TFV-DP) and Emtricitabine Triphosphate (FTC-TP) Measured at Ten Weeks in Dried Blood Spots (DBS)
Assessed at week 10

TFV-DP and FTC-TP concentrations observed in dried blood spots (DBS) after ten weeks of directly observed therapy with TAF-FTC oral PrEP, in women randomized to receive 2, 4, or 7 doses per week, representing poor, moderate, or perfect adherence, respectively.

Concentrations of Tenofovir Disphosphate (TFV-DP) and Emtricitabine Triphosphate (FTC-TP) Measured at Four Weeks in Peripheral Blood Mononuclear Cells (PBMCs)
Assessed at week 4

Steady-state TFV-DP and FTC-TP concentrations observed in peripheral blood mononuclear cells (PBMCs) after ten weeks of directly observed therapy with TAF-FTC oral PrEP, in women randomized to receive 2, 4, or 7 doses per week, representing poor, moderate, or perfect adherence, respectively.

Fitted Steady-state TFV-DP Concentrations in Dried Blood Spots (DBS)
Assessed through 10 weeks

Fitted steady-state TFV-DP concentrations after ten weeks of directly observed therapy with TAF-FTC oral PrEP, in women randomized to receive 2, 4, or 7 doses per week, representing poor, moderate, or perfect adherence, respectively.

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Study Design & Arms
AllocationRANDOMIZED
MaskingNONE
ModelPARALLEL
PurposePREVENTION
Treatment Arms
ArmTypeDescription
Perfect AdherenceEXPERIMENTALCisgender women will receive a single tablet of coformulated 25 mg TAF/ 200mg FTC once daily (7 doses per week).
Moderate AdherenceEXPERIMENTALCisgender women will receive a single tablet of coformulated 25 mg TAF/ 200mg FTC 4 times per week
Poor AdherenceEXPERIMENTALCisgender women will receive a single tablet of coformulated 25 mg TAF/ 200mg FTC twice per week
Interventions
NameTypeDescription
co-formulated 25mg TAF/ 200mg FTCDRUGParticipants will be randomized into 1 of 3 groups to receive a controlled number of doses of a single tablet of co-formulated 25 mg TAF/ 200mg FTC
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Eligibility Criteria
Age Range18 Years — 30 Years
SexFEMALE
Healthy VolunteersYes
Study Sites1

Inclusion Criteria: * Age ≥18 and ≤30 years old * Willing to undergo urine pregnancy tests * Has understood the information provided and has provided written informed consent before any study-related procedures are performed. * HIV uninfected based on negative HIV rapid tests, according to Kenyan n...

Countries:Kenya
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