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A Clinical Trial Comparing the Efficacy of Tenofovir Disoproxil Fumarate/Emtricitabine/Rilpivirine (TDF/FTC/RPV) Versus TDF/FTC/Efavirenz (TDF/FTC/EFV) in Patients With Undetectable Plasma HIV-1 RNA on Current First-line Treatment

A Phase 3b, Randomized, Open-label Clinical Study to Demonstrate Non-inferiority in Virologic Response Rates of HIV-1 RNA Suppression <400 Copies/mL of TDF/FTC/RPV Versus TDF/FTC/EFV in First-line Antiretroviral NNRTI-based Suppressed Patients. Switching At Low HIV-1 RNA Into Fixed Dose Combinations (SALIF)

Status
Completed
Phases
Phase 3
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01709084
Acronym
SALIF
Enrollment
426
Registered
2012-10-17
Start date
2013-10-02
Completion date
2020-07-02
Last updated
2021-02-11

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Human Immunodeficiency Virus-type 1 Infection

Keywords

Human immunodeficiency virus-type 1 infection, HIV-1, Infectious diseases, Ribonucleic acid, RNA, Tenofovir disoproxil fumarate, Emtricitabine, Rilpivirine, Efavirenz, Edurant, TMC278, R278474, Fixed dose combination

Brief summary

The purpose of this study is to demonstrate noninferiority (a new treatment is equivalent to standard treatment) in terms of the percentage of patients who have plasma human immunodeficiency virus-type 1 (HIV-1) ribonucleic acid (RNA) levels less than 400 copies per mL after 48 weeks of randomized treatment with tenofovir disoproxil fumarate/emtricitabine/rilpivirine (TDF/FTC/RPV) versus TDF/FTC/efavirenz (TDF/FTC/EFV).

Detailed description

This is a 48-week, multicenter (study conducted at multiple sites), multinational (conducted at different countries), open-label (all people know the identity of the intervention), randomized (the study medication is assigned by chance) study to assess whether tenofovir disoproxil fumarate/emtricitabine/rilpivirine (TDF/FTC/RPV) shows noninferior response rates of human immunodeficiency virus-type 1 (HIV-1) ribonucleic acid (RNA) suppression less than 400 copies per mL, compared with TDF/FTC/efavirenz (TDF/FTC/EFV). The study consists of 3 phases including, the screening phase (of 6 weeks), treatment phase (of 48 weeks), and follow up phase (of 30 to 35 days after the last dose of study medication). During the 48 weeks treatment phase, patients currently with HIV-1 RNA suppression less than 50 copies per mL on their first-line antiretroviral regimen, will be randomized in a 1:1 ratio, in 2 groups, ie, Group 1 (treatment group) and Group 2 (control group). Both these groups will receive a fixed dose combination (FDC) regimen (ie, FDC tablet: one tablet per day) of either TDF/FTC/RPV in Group 1 or TDF/FTC/EFV in Group 2. Patients will return for study visits at Week 4, 12, 24, 36, and 48 during the treatment period, and then every 24 weeks thereafter during the extended treatment period until the last patient has his or her Week 48 (or treatment discontinuation) visit. Safety evaluations for adverse events, clinical laboratory (central and local) tests, electrocardiogram, vital signs, and physical examination will be performed throughout the study. The treatment duration for each patient will be expected to be between 48 and 108 weeks.

Interventions

DRUGEmtricitabine

Type=exact number, unit=mg, number=200, form=tablet, route=oral. Emtricitabine will be administered in a fixed dose combination along with rilpivirine and tenofovir disoproxil fumarate in Group 1, and along with efavirenz and tenofovir disoproxil fumarate in Group 2.

DRUGRilpivirine

Type=exact number, unit=mg, number=25, form=tablet, route=oral. Rilpivirine will be administered in a fixed dose combination along with tenofovir disoproxil fumarate and emtricitabine, as a single dose tablet.

DRUGEfavirenz

Type=exact number, unit=mg, number=600, form=tablet, route=oral. Efavirenz will be administered in a fixed dose combination along with tenofovir disoproxil fumarate and emtricitabine, as a single dose tablet.

DRUGTenofovir disoproxil fumarate

Type=exact number, unit=mg, number=300, form=tablet, route=oral. Tenofovir disoproxil fumarate will be administered in a fixed dose combination along with rilpivirine and emtricitabine in Group 1, and along with efavirenz and emtricitabine in Group 2.

Sponsors

Janssen-Cilag International NV
Lead SponsorINDUSTRY

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

Documented human immunodeficiency virus-type 1 (HIV-1) infection Patients who have been receiving first line highly active antiretroviral therapy (HAART) for at least 1 year before the screening visit Patients who have been taking the same ARV combination for at least 8 weeks before the screening visit and are expected to continue on this regimen throughout the screening period. Patients who prefer to change the current HAART regimen for reasons of simplification and/or toxicity of nucleoside/nucleotide reverse transcriptase inhibitor (N\[t\]RTI) Plasma HIV-1 RNA less than 50 copies per mL and CD4+ cell count higher than 200 per mm3 at the screening visit Agrees to protocol-defined use of effective contraception

Exclusion criteria

History of virologic failure (2 consecutive plasma HIV-1 ribonucleic acid (RNA) more than or equal to 400 copies per mL) while on previous or current ART History of immunologic failure (2 consecutive CD4+ cell counts during HAART treatment falling below the pre-HAART level) History of any primary N\[t\]RTI or NNRTI mutations Has a previously documented HIV-2 infection Significantly decreased hepatic function or hepatic insufficiency or diagnosed with acute clinical viral hepatitis Diagnosed with Mycobacterium tuberculosis infection Severe laboratory abnormalities Creatinine clearance less than 50 mL per minute Addicted to drug, including alcohol or recreational drugs

Design outcomes

Primary

MeasureTime frameDescription
Percentage of Participants With Plasma Human Immunodeficiency Virus - Type 1 Ribonucleic Acid (HIV-1 RNA) Levels Less Than (<) 400 Copies Per Milliliter (Copies/mL) at Week 48Week 48Percentage of Participants with viral load (plasma HIV-1 RNA levels) less than 400 copies per mL at Week 48, obtained by the modified Food and Drug Administration (FDA) Snapshot method.

Secondary

MeasureTime frameDescription
Percentage of Participants With Plasma HIV-1 RNA Levels < 50 Copies/mL at Week 48Week 48Percentage of Participants with plasma HIV-1 RNA \<50 copies/mL, obtained by the modified Food and Drug Administration (FDA) Snapshot method.
Percentage of Participants With Plasma HIV-1 RNA Levels More Than or Equal to (>=) 400 Copies/mL at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.Week 48Percentage of participants with plasma HIV-1 RNA levels analysed based on time to loss of virologic response (TLOVR) imputation method which is defined as confirmed plasma HIV-1 RNA \>=400 copies/mL, excluding participants who discontinued the study with HIV-1 RNA suppression \<400 copies/mL.
Percentage of Participants With Plasma HIV-1 RNA Levels >= 50 Copies Per Milliliter (Copies/mL) at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.Week 48Percentage of participants with plasma HIV-1 RNA levels analysed based on TLOVR imputation method which is defined as confirmed plasma HIV-1 RNA \>=50 copies/mL, excluding participants who discontinued the study with HIV-1 RNA suppression \<50 copies/mL.
Percentage of Participant With Treatment Adherence Based on Tablet CountUp to 48 WeeksIn both treatment groups adherence rates assessed by tablet count, the majority of participants had an adherence of \>95% (97% and 98% in RPV and EFV treated treatment groups respectively).
Number of Participants With Treatment-Emergent Nucleoside Reverse Transcriptase Inhibitor (N[t]RTI) or Nucleoside/Nucleotide Reverse Transcriptase Inhibitor (NNRTI) MutationsUp to Week 48To compare the loss of treatment options, the number of participants with treatment-emergent N\[t\]RTI or NNRTI mutations, as defined by IAS-USA (2014), after virologic failure were compared between the treatment groups.

Countries

Cameroon, Kenya, Senegal, South Africa, Thailand, Uganda

Participant flow

Participants by arm

ArmCount
TDF/FTC/RPV
Participants received Film-coated fixed dose combination (FDC) tablet containing 300 milligram (mg) Tenofovir disoproxil fumarate (TDF), 200 mg Emtricitabine (FTC) and 25 mg Rilpivirine (RPV) with a meal, until Week 48.
213
TDF/FTC/EFV
Participants received Film-coated fixed dose combination (FDC) tablet containing 300 milligram (mg) Tenofovir disoproxil fumarate (TDF), 200 mg Emtricitabine (FTC) and 600 mg Efavirenz (EFV) on an empty stomach at bedtime, until Week 48.
211
Total424

Withdrawals & dropouts

PeriodReasonFG000FG001
Overall StudyAdverse Event50
Overall StudyLost to Follow-up47
Overall StudyNot Treated02
Overall StudyOther53
Overall StudyParticipant Reached a Virologic Endpoint01
Overall StudyWithdrawal by Subject22

Baseline characteristics

CharacteristicTDF/FTC/EFVTotalTDF/FTC/RPV
Age, Continuous40.6 years
STANDARD_DEVIATION 8.7
40.6 years
STANDARD_DEVIATION 8.34
40.6 years
STANDARD_DEVIATION 8
Region of Enrollment
CAMEROON
13 participants29 participants16 participants
Region of Enrollment
KENYA
37 participants73 participants36 participants
Region of Enrollment
SENEGAL
8 participants25 participants17 participants
Region of Enrollment
SOUTH AFRICA
30 participants63 participants33 participants
Region of Enrollment
THAILAND
58 participants109 participants51 participants
Region of Enrollment
UGANDA
65 participants125 participants60 participants
Sex: Female, Male
Female
134 Participants271 Participants137 Participants
Sex: Female, Male
Male
77 Participants153 Participants76 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
— / —— / —
other
Total, other adverse events
128 / 213137 / 211
serious
Total, serious adverse events
16 / 21311 / 211

Outcome results

Primary

Percentage of Participants With Plasma Human Immunodeficiency Virus - Type 1 Ribonucleic Acid (HIV-1 RNA) Levels Less Than (<) 400 Copies Per Milliliter (Copies/mL) at Week 48

Percentage of Participants with viral load (plasma HIV-1 RNA levels) less than 400 copies per mL at Week 48, obtained by the modified Food and Drug Administration (FDA) Snapshot method.

Time frame: Week 48

Population: The intent-to-treat (ITT) population included all participants who were randomized and who had taken at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
TDF/FTC/RPVPercentage of Participants With Plasma Human Immunodeficiency Virus - Type 1 Ribonucleic Acid (HIV-1 RNA) Levels Less Than (<) 400 Copies Per Milliliter (Copies/mL) at Week 4893.9 Percentage of Participants
TDF/FTC/EFVPercentage of Participants With Plasma Human Immunodeficiency Virus - Type 1 Ribonucleic Acid (HIV-1 RNA) Levels Less Than (<) 400 Copies Per Milliliter (Copies/mL) at Week 4896.2 Percentage of Participants
Secondary

Number of Participants With Treatment-Emergent Nucleoside Reverse Transcriptase Inhibitor (N[t]RTI) or Nucleoside/Nucleotide Reverse Transcriptase Inhibitor (NNRTI) Mutations

To compare the loss of treatment options, the number of participants with treatment-emergent N\[t\]RTI or NNRTI mutations, as defined by IAS-USA (2014), after virologic failure were compared between the treatment groups.

Time frame: Up to Week 48

Population: The intent-to-treat (ITT) population included all participants who were randomized and who had taken at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
TDF/FTC/RPVNumber of Participants With Treatment-Emergent Nucleoside Reverse Transcriptase Inhibitor (N[t]RTI) or Nucleoside/Nucleotide Reverse Transcriptase Inhibitor (NNRTI) Mutations0 Participants
TDF/FTC/EFVNumber of Participants With Treatment-Emergent Nucleoside Reverse Transcriptase Inhibitor (N[t]RTI) or Nucleoside/Nucleotide Reverse Transcriptase Inhibitor (NNRTI) Mutations0 Participants
Secondary

Percentage of Participants With Plasma HIV-1 RNA Levels < 50 Copies/mL at Week 48

Percentage of Participants with plasma HIV-1 RNA \<50 copies/mL, obtained by the modified Food and Drug Administration (FDA) Snapshot method.

Time frame: Week 48

Population: The intent-to-treat (ITT) population included all participants who were randomized and who had taken at least 1 dose of study drug.

ArmMeasureValue (NUMBER)
TDF/FTC/RPVPercentage of Participants With Plasma HIV-1 RNA Levels < 50 Copies/mL at Week 4893.9 Percentage of Participants
TDF/FTC/EFVPercentage of Participants With Plasma HIV-1 RNA Levels < 50 Copies/mL at Week 4896.2 Percentage of Participants
Secondary

Percentage of Participants With Plasma HIV-1 RNA Levels >= 50 Copies Per Milliliter (Copies/mL) at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.

Percentage of participants with plasma HIV-1 RNA levels analysed based on TLOVR imputation method which is defined as confirmed plasma HIV-1 RNA \>=50 copies/mL, excluding participants who discontinued the study with HIV-1 RNA suppression \<50 copies/mL.

Time frame: Week 48

Population: The intent-to-treat (ITT) population included all participants who were randomized and who had taken at least 1 dose of study drug. Here, N (number of participants analyzed) signifies participants who were evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
TDF/FTC/RPVPercentage of Participants With Plasma HIV-1 RNA Levels >= 50 Copies Per Milliliter (Copies/mL) at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.1.5 Percentage of Participants
TDF/FTC/EFVPercentage of Participants With Plasma HIV-1 RNA Levels >= 50 Copies Per Milliliter (Copies/mL) at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.1.0 Percentage of Participants
Secondary

Percentage of Participants With Plasma HIV-1 RNA Levels More Than or Equal to (>=) 400 Copies/mL at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.

Percentage of participants with plasma HIV-1 RNA levels analysed based on time to loss of virologic response (TLOVR) imputation method which is defined as confirmed plasma HIV-1 RNA \>=400 copies/mL, excluding participants who discontinued the study with HIV-1 RNA suppression \<400 copies/mL.

Time frame: Week 48

Population: The intent-to-treat (ITT) population included all participants who were randomized and who had taken at least 1 dose of study drug. Here, N (number of participants analyzed) signifies participants who were evaluable for this outcome measure.

ArmMeasureValue (NUMBER)
TDF/FTC/RPVPercentage of Participants With Plasma HIV-1 RNA Levels More Than or Equal to (>=) 400 Copies/mL at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.0.5 Percentage of Participants
TDF/FTC/EFVPercentage of Participants With Plasma HIV-1 RNA Levels More Than or Equal to (>=) 400 Copies/mL at Week 48 Based on Time to Loss of Virologic Response (TLOVR) [Non-virologic Failure Censored] Imputation Method.0.5 Percentage of Participants
Secondary

Percentage of Participant With Treatment Adherence Based on Tablet Count

In both treatment groups adherence rates assessed by tablet count, the majority of participants had an adherence of \>95% (97% and 98% in RPV and EFV treated treatment groups respectively).

Time frame: Up to 48 Weeks

Population: The intent-to-treat (ITT) population included all participants who were randomized and who had taken at least 1 dose of study drug. Here, N (number of participants analyzed) signifies participants who were evaluable for this outcome measure.

ArmMeasureValue (NUMBER)Dispersion
TDF/FTC/RPVPercentage of Participant With Treatment Adherence Based on Tablet Count97.2 Percentage of Participants 1.981
TDF/FTC/EFVPercentage of Participant With Treatment Adherence Based on Tablet Count97.6 Percentage of Participants 1.649

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026