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E/C/F/TDF

Phase 3

Acquired Immunodeficiency Syndrome | Small molecule | Infectious Disease |Gilead Sciences, Inc.|Last Updated: Sep 20, 2019

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
RandomizedDouble-BlindACTIVE_CONTROLLEDDMCBiomarker
Total Trials3
Total Enrollment968
FDA Designations
PRIORITY_REVIEWACCELERATED_APPROVAL
Clinical Trials (3)
NCT IDTitlePhaseStatusEnrollmentVelocityDesignStartCompletionLast UpdatedSitesCountries
NCT01705574Safety and Efficacy of E/C/F/TDF Versus RTV-Boosted ATV Plus FTC/TDF in HIV-1 Infected, Antiretroviral Treatment-Naive WomenPHASE3 COMPLETED 583Oct 24, 2012Sep 6, 2018Sep 20, 201999 United States, Belgium +10
NCT01363011Cobicistat-containing Highly Active Antiretroviral Regimens in HIV-1 Infected Patients With Mild to Moderate Renal ImpairmentPHASE3 COMPLETED 106May 1, 2011Feb 1, 2015May 2, 201651 United States, Australia +7
NCT01497899Safety and Efficacy of E/C/F/TAF (Genvoya®) Versus E/C/F/TDF (Stribild®) in HIV-1 Infected, Antiretroviral Treatment-Naive AdultsPHASE2 COMPLETED 279Dec 28, 2011Aug 22, 2016Nov 19, 201841 United States, Puerto Rico
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Study Endpoints
Primary Endpoints
Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 48 of the Double-Blind Phase as Determined by the US FDA-Defined Snapshot Algorithm
Week 48

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 48 of the double-blind phase was analyzed using the snapshot algorithm, which defines a participant's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Change From Baseline in Estimated Glomerular Filtration Rate (eGFR) Using the Cockcroft-Gault (CG) Equation at Week 24 (Cohort 1)
Baseline; Week 24

Change from baseline in eGFR-CG equation at Week 24 was analyzed in Cohort 1 (treatment-naive).

Change From Baseline in eGFR-CG at Week 24 (Cohort 2)
Baseline; Week 24

Change from baseline in eGFR-CG equation at Week 24 was analyzed in Cohort 2 (treatment-experienced).

Change From Baseline in eGFR Using the Modification of Diet in Renal (MDRD) Equation at Week 24 (Cohort 1)
Baseline; Week 24

Change from baseline in eGFR-MDRD equation at Week 24 was analyzed in Cohort 1 (treatment-naive). The calculation was normalized to 1.73 m\^2 body surface area.

Change From Baseline in eGFR-MDRD at Week 24 (Cohort 2)
Baseline; Week 24

Change from baseline in eGFR-MDRD equation at Week 24 was analyzed in Cohort 2 (treatment-experienced). The calculation was normalized to 1.73 m\^2 body surface area.

Change From Baseline in eGFR Using the Chronic Kidney Disease, Epidemiology Collaboration (CKD-EPI) Formula Based on Cystatin C Equation at Week 24 (Cohort 1)
Baseline; Week 24

Change from baseline in eGFR-CKD-EPI based on cystatin C equation (not adjusted for age, sex, and race) at Week 24 was analyzed in Cohort 1 (treatment-naive). The calculation was normalized to 1.73 m\^2 body surface area.

Change From Baseline in eGFR-CKD-EPI Formula Based on Cystatin C Equation at Week 24 (Cohort 2)
Baseline; Week 24

Change from baseline in eGFR-CKD-EPI based on cystatin C equation (not adjusted for age, sex, and race) at Week 24 was analyzed in Cohort 2 (treatment-experienced). The calculation was normalized to 1.73 m\^2 body surface area.

Change From Baseline in eGFR-CKD-EPI Based on Cystatin C Equation, Adjusted at Week 24 (Cohort 1)
Baseline; Week 24

Change from baseline in eGFR-CKD-EPI based on cystatin C equation (adjusted for age, sex, and race) at Week 24 was analyzed in Cohort 1 (treatment-naive). The calculation was normalized to 1.73 m\^2 body surface area.

Change From Baseline in eGFR-CKD-EPI Based on Cystatin C Equation, Adjusted at Week 24 (Cohort 2)
Baseline; Week 24

Change from baseline in eGFR-CKD-EPI based on cystatin C equation (adjusted for age, sex, and race) at Week 24 was analyzed in Cohort 2 (treatment-experienced). The calculation was normalized to 1.73 m\^2 body surface area.

Change From Baseline in Actual Glomerular Filtration Rate (aGFR) at Weeks 2, 4, and 24 (Cohort 1)
Baseline; Weeks 2, 4, and 24

Change from baseline in aGFR at Weeks 2, 4, and 24 was analyzed in Cohort 1 (treatment-naive). aGFR was calculated using iohexol plasma clearance.

Change From Baseline in aGFR at Weeks 2, 4, and 24 (Cohort 2)
Baseline; Weeks 2, 4, and 24

Change from baseline in aGFR at Weeks 2, 4, and 24 was analyzed in Cohort 2 (treatment-experienced). aGFR was calculated using iohexol plasma clearance.

Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24 (Cohort 1)
Week 24

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed in Cohort 1 (treatment-naive) using the FDA snapshot analysis algorithm.

Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24 (Cohort 2)
Week 24

The percentage of participants with HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed in Cohort 2 (treatment-experienced) using the FDA snapshot analysis algorithm.

Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 24
Week 24

The percentage of participants achieving HIV-1 RNA \< 50 copies/mL at Week 24 was analyzed using the snapshot algorithm, which defines a patient's virologic response status using only the viral load at the predefined time point within an allowed window of time, along with study drug discontinuation status.

Secondary Endpoints
Change From Baseline in CD4+ Cell Count at Week 48 of the Double-Blind Phase
Baseline; Week 48
Percentage of Participants With HIV-1 RNA < 50 Copies/mL at Week 96 for the STB Group as Determined by the US FDA-Defined Snapshot Algorithm
Week 96
Percentage of Participants Receiving STB or ATV+RTV+TVD With HIV-1 RNA < 50 Copies/mL at Week 48 of the Open-Label Extension Phase
Open-Label Extension Week 48
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Study Design & Arms
AllocationRANDOMIZED
MaskingTRIPLE
ModelPARALLEL
PurposeTREATMENT
Treatment Arms
ArmTypeDescription
E/C/F/TDFEXPERIMENTALE/C/F/TDF + ATV placebo + RTV placebo + FTC/TDF placebo
ATV + RTV+ FTC/TDFACTIVE_COMPARATORATV + RTV + FTC/TDF + E/C/F/TDF placebo
Open-Label Extension PhaseEXPERIMENTALAfter 48 weeks of blinded treatment, participants will continue to take blinded study drug for 12 weeks and return for an unblinding visit at Week 60. Participants who are virologically suppressed at Week 48 during the double-blinded treatment phase will have the option to enter the open-label extension phase. Participants randomized to the E/C/F/TDF arm will continue to receive open-label E/C/F/TDF and participants randomized to the ATV+ RTV + FTC/TDF arm will be re-randomized to receive either open-label elvitegravir/cobicistat/emtricitabine/tenofovir alafenamide (E/C/F/TAF) or open-label ATV + RTV+ FTC/TDF.
E/C/F/TDF (Cohort 1)EXPERIMENTALParticipants who have not received prior antiretroviral (ARV) treatment and who are virologically unsuppressed at baseline will initiate treatment with elvitegravir/cobicistat/emtricitabine/tenofovir disoproxil fumarate (E/C/F/TDF) single-tablet regimen (STR) for up to 96 weeks. Following Week 96, participants continued their treatment until all participants discontinued from the study or commercial approval of E/C/F/TDF was received in the applicable country.
COBI+PI+2 NRTI (Cohort 2)EXPERIMENTALParticipants who have received prior ARV treatment and who are virologically suppressed at baseline will continue their treatment regimen, switching the regimen's pharmacoenhancer component from ritonavir to cobicistat (COBI), and continuing their existing protease inhibitor (PI; either atazanavir (ATV) or darunavir (DRV)) plus 2 nucleoside reverse transcriptase inhibitor (NRTI) regimen for up to 96 weeks. Following Week 96, participants continued their treatment until all participants discontinued from the study or commercial approval of cobicistat was received in the applicable country.
E/C/F/TAFEXPERIMENTALE/C/F/TAF plus E/C/F/TDF placebo for at least 48 weeks
E/C/F/TAF Open-LabelEXPERIMENTALFollowing study unblinding, participants from the E/C/F/TAF and E/C/F/TDF arms may have the option to receive E/C/F/TAF during an open-label extension phase. Also, participants who are actively participating in a Gilead-sponsored study of cobicistat-boosted darunavir plus nucleoside/nucleotide reverse transcriptase inhibitors (NRTI) who have reached the protocol-defined secondary endpoint (Week 48) and remain virologically suppressed are eligible to participate and receive E/C/F/TAF in this open-label extension phase.
Interventions
NameTypeDescription
E/C/F/TDFDRUG150/150/200/300 mg FDC tablet administered orally with food once daily
ATVDRUG300 mg capsule administered orally with food once daily
RTVDRUG100 mg tablet administered orally with food once daily
FTC/TDFDRUG200/300 mg tablet administered orally with food once daily
E/C/F/TDF PlaceboDRUGTablet administered orally with food once daily
ATV PlaceboDRUGTablet administered orally with food once daily
RTV PlaceboDRUGCapsule administered orally with food once daily
FTC/TDF PlaceboDRUGTablet administered orally with food once daily
E/C/F/TAFDRUG150/150/200/10 mg FDC tablet administered orally with food once daily
COBIDRUGCOBI 150 mg tablet administered with food orally once daily
DRVDRUGDRV 800 mg tablet administered orally once daily
NRTIDRUGParticipants will receive 2 investigator-selected NRTIs, which may include abacavir (ABC), lamivudine (3TC)/zidovudine (ZDV), didanosine (DDI), emtricitabine (FTC), ABC/3TC, 3TC, tenofovir disoproxil fumarate (TDF), or FTC/TDF, administered according to prescribing information.
E/C/F/TAF PlaceboDRUGTablet administered orally once daily
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Eligibility Criteria
Age Range18 Years — N/A
SexFEMALE
Healthy VolunteersNo
Study Sites99

Key Inclusion Criteria: * Female (at birth), age ≥ 18 years * Ability to understand and sign a written informed consent form * Plasma HIV-1 RNA levels ≥ 500 copies/mL * No prior use of any approved or investigational antiretroviral drug for any length of time * Screening genotype report must show s...

Countries:United StatesBelgiumDominican RepublicFranceItalyMexicoPortugalPuerto RicoRussiaThailandUgandaUnited KingdomAustraliaAustriaCanadaGermany
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