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CompletedNCT00896051Updated Sep 30, 2013Results posted

TMC125-TiDP2-C238: An Exploratory Pharmacokinetics, Safety and Anti-HIV Activity Study of Etravirine (ETR) When Given With Boosted Atazanavir (ATV/Rtv) at Two Different Doses and 1 Nucleoside Reverse Transcriptase Inhibitor (NRTI) in Treatment Experienced HIV Patients

A Phase 2 interventional study of Atazanavir (ATV) 300 mg and Atazanavir (ATV) 400 mg in HIV Infections and Acquired Immunodeficiency Syndrome, sponsored by Janssen R&D Ireland. Completed at 19 sites in 5 countries. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2013-09-30.

Sponsored by Janssen R&D Ireland · Phase 2, Interventional, and Treatment

Phase
Phase 2
Study type
Interventional
Enrollment
50
Allocation
Randomized
Ages
18 Years and older
Sex
All
01

Study summary

The purpose of this study is to determine the pharmacokinetics (how the body absorbs, distributes, metabolizes and eliminates a drug) (PK) of ETR when given with ATV/rtv and 1 NRTI in treatment experienced HIV-1 infected patients. In addition, safety, tolerability and anti-HIV effect of this regimen will also be studied. A total of 46 patients will be enrolled.

Read the detailed description

This is a randomized (study drug assigned by chance), exploratory, open-label (all involved people know the identity of the intervention) trial to evaluate the pharmacokinetics (PK), safety, tolerability and anti-HIV (anti Human Immunodeficiency Virus) activity of etravirine (ETR ) when given with atazanavir/ritonavir (ATV/rtv) and 1 nucleoside reverse transcriptase inhibitor (NRTI) in 46 treatment experienced HIV-1 infected patients. The trial will consist of : 4 weeks of Screening Period, 2 weeks Pre-Treatment Phase, 48-week Treatment Period, and a Final Visit followed by a 4-week Follow-up Period (only for patients not continuing treatment with ETR in another trial or program). Safety evaluations (AE reporting, labs, vital signs, etc.) will be monitored at each study visit. A PK substudy (included in the protocol, with optional participation) with tenofovir (TDF) added to the antiretroviral regimen for 7 days will be conducted in patients with > 24 weeks of treatment with suppressed HIV-1 viral load. In Pre-Treatment Phase, all patients will receive ATV/rtv 300/100 mg once daily to be taken following a meal each morning + 2 NRTIs (dose as specified in the labels) for 14 days. In Treatment Phase, patients will receive ETR 200 mg twice daily in addition to ATV/rtv (300/100 mg or 400/100 mg) once daily with meals + 1 investigator-selected NRTI for 48 weeks. In substudy TDF 300 mg once daily will be added to the treatment regimen x 7 days.

02

Conditions studied

  • HIV Infections
  • Acquired Immunodeficiency Syndrome

Keywords

  • HIV Infections
  • Acquired Immunodeficiency Syndrome
  • TMC125-TiDP2-C238
  • TMC125-C238
  • Etravirine
  • Intelence
  • HIV
  • HIV-1
  • Pharmacokinetics
03

In context

HIV Infections

4,258 studies on the registry are indexed under HIV Infections; 240 are open to participants now.

This study's enrollment of 50 is below the median of 83 across 3,251 interventional studies indexed under HIV Infections.

Browse HIV Infections studies →

Lead sponsor

Janssen R&D Ireland is the lead sponsor of 31 studies on the registry; none are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Documented HIV-1 infection
  • Failing on a stable ART (anti retroviral therapy) with HIV-1 plasma viral load above 500 HIV-1 RNA copies/ml
  • Presence of at least 1 documented NNRTI mutation
  • Demonstrated sensitivity to ATV, ETR and at least one of the selected NRTIs based on the resistance test at screening
  • General medical condition, in the investigator's opinion, does not interfere with the assessments and completion of the trial
  • Substudy: patients who have been treated in C238 for more than 24 weeks and are currently suppressed (defined as patients with at least 2 most recent and consecutive viral loads less than 50 cp/mL) will be considered eligible for the substudy

Exclusion criteria

Exclusion Criteria:

  • Primary HIV-1 infection
  • Previously documented HIV-2 infection
  • Previously failed 2 or more HIV PI-containing regimens
  • Previous diagnosis of hereditary hyperbilirubinemia (eg. Gilbert's syndrome, Crigler-Najjar syndrome).

Grade 3 or 4 toxicities (according to DAIDS grading)

  • Acute and chronic viral hepatitis
  • Receipt of an investigational drug or investigational vaccine within 30 days prior to the trial drug administration
  • Pregnant or breastfeeding female
05

Study design

Phase
Phase 2
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
50 participants (actual)

Study arms

  • Experimental
    ATV/rtv 300/100 mg (Treatment A)

    Treatment-experienced human immunodeficiency virus - type 1 (HIV-1) infected participants will take by mouth atazanavir (ATV)/low-dose ritonavir (rtv) 300/100 mg once daily + 2 nucleoside reverse transcriptase inhibitors (NRTIs) for 2 weeks pre-treatment followed by ATV/rtv 300/100 mg once daily + etravirine (ETR) 200 mg twice daily + 1 NRTI for 48 weeks. If particpating in an optional substudy to assess the effect of adding tenofovir disoproxil fumarate (TDF) for 7 days on ATV and ETR pharmacokinetics, participants will receive TDF 300 mg once daily for 7 days in addition to their antiretroviral regimen (ETR+ATV/rtv+NRTI).

    Drug: Atazanavir (ATV) 300 mg · Drug: Ritonavir (rtv) 100 mg · Drug: Nucleo(side)/(tide) reverse transcriptase inhibitors (NRTIs) · Drug: Etravirine (ETR) 200 mg · Drug: Tenofovir disoproxil fumarate (TDF) 300 mg

  • Experimental
    ATV/rtv 400/100 mg (Treatment B)

    Treatment-experienced human immunodeficiency virus - type 1 (HIV-1) infected participants will take by mouth atazanavir (ATV)/low-dose ritonavir (rtv) 300/100 mg once daily + 2 nucleoside reverse transcriptase inhibitors (NRTIs) for 2 weeks pretreatment followed by ATV/rtv 400/100 mg once daily + etravirine (ETR) 200 mg twice daily + 1 NRTI for 48 weeks. If particpating in an optional substudy to assess the effect of adding tenofovir disoproxil fumarate (TDF) for 7 days on ATV and ETR pharmacokinetics, participants will take TDF 300 mg once daily for 7 days in addition to their antiretroviral regimen (ETR+ATV/rtv+NRTI).

    Drug: Atazanavir (ATV) 400 mg · Drug: Ritonavir (rtv) 100 mg · Drug: Nucleo(side)/(tide) reverse transcriptase inhibitors (NRTIs) · Drug: Etravirine (ETR) 200 mg · Drug: Tenofovir disoproxil fumarate (TDF) 300 mg

Interventions

  • DrugAtazanavir (ATV) 300 mg

    Atazanavir (ATV) 300 mg taken by mouth following a meal each morning for 2 weeks during the Pre-Treatment Period and for 48 weeks during the Treatment Period. If participating in the optional substudy, participants will take ATV 300 mg by mouth following a meal each morning on Substudy Days -1 to 7.

  • DrugAtazanavir (ATV) 400 mg

    Atazanavir (ATV) 400 mg taken by mouth following a meal each morning for 2 weeks during the Pre-Treatment Period and for 48 weeks during the Treatment Period. If participating in the optional substudy, participants will take ATV 400 mg by mouth following a meal each morning on Substudy Days -1 to 7.

  • DrugRitonavir (rtv) 100 mg

    Ritonavir (rtv) 100 mg taken by mouth following a meal each morning for 2 weeks during the Pre-Treatment Period and for 48 weeks during the Treatment Period. If participating in the optional substudy, participants will take rtv 100 mg by mouth following a meal each morning on Substudy Days -1 to 7.

  • DrugNucleo(side)/(tide) reverse transcriptase inhibitors (NRTIs)

    2 investigator-selected NRTIs taken as specified in the individual product labels for 2 weeks during the Pre-Treatment Period followed by 1 investigator-selected NRTI (of the 2 NRTIs in the Pre-Treatment Phase) taken as specified in the individual product label for 48 weeks during the Treatment Period. If participating in the optional substudy, participants will take 1 investigator-selected NRTI (of the 2 NRTIs in the Pre-Treatment Phase) mg taken as specified in the individual product label during the Substudy.

  • DrugEtravirine (ETR) 200 mg

    Etravirine (ETR) 200 mg taken twice daily as two 100-mg tablets following a meal (morning and evening) for at least the first two weeks of the 48-week Treatment Period. If participating in the optional substudy, participants will take ETR 200 mg twice daily as two 100-mg tablets following a meal each morning and evening on Substudy Days -1 to 7.

  • DrugTenofovir disoproxil fumarate (TDF) 300 mg

    Tenofovir disoproxil fumarate (TDF) 300 mg taken by mouth following a meal each morning on Substudy Days 1 to 7.

06

What researchers measure

Primary outcomes

  1. Pharmacokinetic Results of Atazanavir (ATV): Treatment A: ATV/Low-Dose Ritonavir (Rtv) 300/100 mg (Results for C0h, Cmin, and Cmax)

    The table below shows pharmacokinetic (PK) results of atazanavir (ATZ) when administered as ATV/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), and maximum plasma concentration (Cmax).

    Time frame: Day -1 (Pretreatment); Week 2 (Test)

  2. Pharmacokinetic Results of Atazanavir (ATV): Treatment A: ATV/Low-Dose Ritonavir (Rtv) 300/100 mg (Results for AUC24hr)

    The table below shows pharmacokinetic (PK) results of atazanavir (ATZ) when administered as ATV/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

    Time frame: Day -1 (Pretreatment); Week 2 (Test)

  3. Pharmacokinetic Results of Atazanavir (ATV): Treatment B: ATV/Low-Dose Ritonavir (Rtv) 400/100 mg (Results for C0h, Cmin, and Cmax)

    The table below shows pharmacokinetic (PK) results of atazanavir (ATV) when administered as ATV/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), maximum plasma concentration (Cmax), and area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

    Time frame: Day -1 (Reference); Week 2 (Test)

  4. Pharmacokinetic Results of Atazanavir (ATV): Treatment B: ATV/Low-Dose Ritonavir (Rtv) 400/100 mg (Results for AUC24hr)

    The table below shows pharmacokinetic (PK) results of atazanavir (ATV) when administered as ATV/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

    Time frame: Day -1 (Reference); Week 2 (Test)

  5. Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment A: Atazanavir (ATV)/Rtv 300/100 mg (Results for C0h, Cmin, and Cmax)

    The table below shows the pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), and maximum plasma concentration (Cmax).

    Time frame: Day -1 (Reference); Week 2 (Test)

  6. Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment A: Atazanavir (ATV)/Rtv 300/100 mg (Results for AUC24hr)

    The table below shows the pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

    Time frame: Day -1 (Reference); Week 2 (Test)

  7. Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment B: Atazanavir (ATV)/Rtv 400/100 mg (Results for C0h, Cmin, and Cmax)

    The table below shows pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), maximum plasma concentration (Cmax), and area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

    Time frame: Day -1 (Reference); Week 2 (Test)

  8. Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment B: Atazanavir (ATV)/Rtv 400/100 mg (Results for AUC24hr)

    The table below shows pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

    Time frame: Day -1 (Reference); Week 2 (Test)

  9. Pharmacokinetic Results of Etravirine (ETR) (Results for C0h, Cmin, and Cmax)

    The table below shows pharmacokinetic (PK) results of ETR in the current study expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin) and maximum plasma concentration (Cmax).

    Time frame: Week 2

  10. Pharmacokinetic Results of Etravirine (ETR) (Results for AUC12hr)

    The table below shows pharmacokinetic (PK) results of ETR in the current study expressed as the area under the plasma concentration-time curve from time of intake to 12 hours after dosing (AUC12hr).

    Time frame: Week 2

  11. Percentage of Participants With Undetectable Plasma Viral Load (VL) Values (<50 Copies/mL) at Week 48

    The table below shows the percentage of participants wih undetectable plasma viral load (VL) values (\<50 copies/mL) at Week 48 using the Non-Completing = Failure (NC=F) imputation method (ie, participants who discontinued early were counted as nonresponders by having their VL values after discontinuation imputed with their baseline value, thus resulting in a 0 change).

    Time frame: Week 48

Secondary outcomes

  1. Change From Prebaseline in CD4+ Cell Count Over Time

    The table below shows the mean change from prebaseline over time in CD4+ cell count using the Non-Completing = Failure (NC=F) imputation method.

    Time frame: Prebaseline, Baseline, Weeks 4, 12, 24, 48

  2. The Percentage of Participants With a Virologic Response Using the Non-Completing = Failure (NC=F) Imputation Method

    The table below shows the percentage of participants per time point with a virologic response defined as having a plasma viral load (VL) \<50 copies/mL, and with plasma VL \<400 copies/mL using the Non-Completing = Failure (NC=F) imputation method (ie, participants who discontinued early were counted as nonresponders by having their VL values after discontinuation imputed with their Baseline value, thus resulting in a 0 change).

    Time frame: Baseline, Weeks 4, 12, 24, 48

  3. The Percentage of Participants With a Virologic Response Using the Time to Loss of Virologic Response (TLOVR) Imputation Method

    The table below shows the percentage of participants with a virologic response defined as a viral load \<50 Copies/mL and \<400 Copies/mL per time point calculated using the time to loss of virologic response (TLOVR) imputation method.

    Time frame: Baseline, Weeks 4, 12, 24, 48

  4. The Percentage of Participants With a Virologic Response (Plasma Viral Load < 50 Copies/mL) at Week 48 Using the Snapshot Analysis Method

    The table below provides the results from the snapshot analysis method that includes the percentage of participants with virologic response (\<50 copies/mL), the percentage of participants who were virologic failures (VF) (\>50 copies/mL, discontinued prior to time X for reasons of VF or for other reasons, except for VF or adverse event, with a last viral load \>50 copies/mL), and the percentage of participants with no viral load (VL) data available at Week 48.

    Time frame: Week 48

  5. Change From Pre-Baseline in Log10 Viral Load Over Time

    The table below shows the mean change from prebaseline over time in log10 (Copies/mL) plasma viral load using the Non-Completing = Failure (NC=F) imputation method.

    Time frame: Pre-Baseline, Baseline, Weeks 4, 12, 24, 48

  6. Time to Confirmed Virologic Response

    The table below provides the time in days it took participants to reach a confirmed virologic response defined as a plasma viral load (VL) \<50 copies/mL, and plasma VL \<400 copies/mL analyzed according to the Time to Loss of Virologic Response (TLOVR) imputation method.

    Time frame: Prebaseline to Week 48

  7. Time to Virologic Failure

    The table below shows the number of days to virologic failure defined as a plasma viral load (VL) \> 50 copies/mL for participants who had been virologic responders (ie, having a plasma VL \<50, and \<400 copies/mL according to the time to loss of virologic response \[TLOVR\] imputation method). Time to virologic failure was the time to subsequent loss of virologic response, and the time was calculated from Prebaseline (Week -2). Participants who never achieved a virologic response were defined as nonresponders and counted as virologic failures on Day 1.

    Time frame: Prebaseline to Week 48

07

Results

Posted Sep 30, 2013

Participant flow

Etravirine coadministered with 2 doses of atazanavir/low-dose ritonavir each combined with 1 nucleoside reverse transcriptase inhibitor was evaluated in human immunodeficiency virus - type 1 infected participants. The study was conducted between 25 June 2009 and 10 April 2012 and participants were recruited by 17 investigators in 4 countries.

Participant flow — Overall Study
MilestoneATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Started2525
Completed1516
Not completed109
Withdrew: Adverse event21
Withdrew: Lost to follow-up32
Withdrew: Withdrawal by subject32
Withdrew: Subject noncompliant13
Withdrew: Other11

Outcome measures

PrimaryPharmacokinetic Results of Atazanavir (ATV): Treatment A: ATV/Low-Dose Ritonavir (Rtv) 300/100 mg (Results for C0h, Cmin, and Cmax)

The table below shows pharmacokinetic (PK) results of atazanavir (ATZ) when administered as ATV/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), and maximum plasma concentration (Cmax).

Time frame:
Day -1 (Pretreatment); Week 2 (Test)
Reported as:
Mean · ng/ml
Pharmacokinetic Results of Atazanavir (ATV): Treatment A: ATV/Low-Dose Ritonavir (Rtv) 300/100 mg (Results for C0h, Cmin, and Cmax)
ng/mlATV/Rtv 300/100 mg (Reference)ATV/Rtv 300/100 mg (Test)
C0h, ng/ml (Reference, n=21; Test, n=19)1339 ± 1728845.7 ± 703.3
Cmin, ng/ml (Reference, n=20; Test, n=18)1104 ± 1511758.6 ± 610.5
Cmax, ng/ml (Reference, n=20; Test, n=19)5652 ± 27355232 ± 2166
Statistical analysis
  • ATV/Rtv 300/100 mg (Reference) vs ATV/Rtv 300/100 mg (Test) · Linear mixed effects model · Least squares (ls) means ratio: 0.82 · 90% CI 0.55 to 1.22A linear mixed effects model was used controlling for treatment as fixed effect, and participant as a random effect.
  • ATV/Rtv 300/100 mg (Reference) vs ATV/Rtv 300/100 mg (Test) · Linear mixed effects model · Least squares (ls) mean ratio: 0.96 · 90% CI 0.80 to 1.16A linear mixed effects model was used controlling for treatment as fixed effect, and participant as a random effect.
PrimaryPharmacokinetic Results of Atazanavir (ATV): Treatment A: ATV/Low-Dose Ritonavir (Rtv) 300/100 mg (Results for AUC24hr)

The table below shows pharmacokinetic (PK) results of atazanavir (ATZ) when administered as ATV/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

Time frame:
Day -1 (Pretreatment); Week 2 (Test)
Reported as:
Mean · ng.h/mL
Pharmacokinetic Results of Atazanavir (ATV): Treatment A: ATV/Low-Dose Ritonavir (Rtv) 300/100 mg (Results for AUC24hr)
ng.h/mLATV/Rtv 300/100 mg (Reference)ATV/Rtv 300/100 mg (Test)
Pharmacokinetic Results of Atazanavir (ATV): Treatment A: ATV/Low-Dose Ritonavir (Rtv) 300/100 mg (Results for AUC24hr)60030 ± 3969055070 ± 21860
Statistical analysis
  • ATV/Rtv 300/100 mg (Reference) vs ATV/Rtv 300/100 mg (Test) · Linear mixed effects model · Least squares (ls) means ratio: 0.96 · 90% CI 0.76 to 1.22linear mixed effects model was used controlling for treatment as fixed effect, and participant as a random effect.
PrimaryPharmacokinetic Results of Atazanavir (ATV): Treatment B: ATV/Low-Dose Ritonavir (Rtv) 400/100 mg (Results for C0h, Cmin, and Cmax)

The table below shows pharmacokinetic (PK) results of atazanavir (ATV) when administered as ATV/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), maximum plasma concentration (Cmax), and area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

Time frame:
Day -1 (Reference); Week 2 (Test)
Reported as:
Mean · ng/ml
Pharmacokinetic Results of Atazanavir (ATV): Treatment B: ATV/Low-Dose Ritonavir (Rtv) 400/100 mg (Results for C0h, Cmin, and Cmax)
ng/mlATV/Rtv 300/100 mg (Reference)ATV/Rtv 400/100 mg (Test)
C0h, ng/ml (Reference, n=22; Test, n=20)1898 ± 22981545 ± 1296
Cmin, ng/ml (Reference, n=21;Test, n=18)1671 ± 23101107 ± 866.8
Cmax, ng/ml (Reference, n=22; Test, n=20)6419 ± 28536950 ± 2693
Statistical analysis
  • ATV/Rtv 300/100 mg (Reference) vs ATV/Rtv 400/100 mg (Test) · Linear mixed effects model · Least squares (ls) means ratio: 0.91 · 90% CI 0.63 to 1.33A linear mixed effects model was used controlling for treatment as fixed effect, and participant as a random effect.
  • ATV/Rtv 300/100 mg (Reference) vs ATV/Rtv 400/100 mg (Test) · Linear mixed effects model · Least squares (ls) means ratio: 1.05 · 90% CI 0.86 to 1.27A linear mixed effects model was used controlling for treatment as fixed effect, and participant as a random effect.
PrimaryPharmacokinetic Results of Atazanavir (ATV): Treatment B: ATV/Low-Dose Ritonavir (Rtv) 400/100 mg (Results for AUC24hr)

The table below shows pharmacokinetic (PK) results of atazanavir (ATV) when administered as ATV/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

Time frame:
Day -1 (Reference); Week 2 (Test)
Reported as:
Mean · ng.h/mL
Pharmacokinetic Results of Atazanavir (ATV): Treatment B: ATV/Low-Dose Ritonavir (Rtv) 400/100 mg (Results for AUC24hr)
ng.h/mLATV/Rtv 300/100 mg (Reference)ATV/Rtv 300/100 mg (Test)
Pharmacokinetic Results of Atazanavir (ATV): Treatment B: ATV/Low-Dose Ritonavir (Rtv) 400/100 mg (Results for AUC24hr)74210 ± 5548072220 ± 34600
Statistical analysis
  • ATV/Rtv 300/100 mg (Reference) vs ATV/Rtv 300/100 mg (Test) · Llinear mixed effects model · Least squares (ls) means ratio: 0.99 · 90% CI 0.81 to 1.21A linear mixed effects model was used controlling for treatment as fixed effect, and participant as a random effect.
PrimaryPharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment A: Atazanavir (ATV)/Rtv 300/100 mg (Results for C0h, Cmin, and Cmax)

The table below shows the pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), and maximum plasma concentration (Cmax).

Time frame:
Day -1 (Reference); Week 2 (Test)
Reported as:
Mean · ng/ml
Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment A: Atazanavir (ATV)/Rtv 300/100 mg (Results for C0h, Cmin, and Cmax)
ng/mlATV/Rtv 300/100 mg (Reference)ATV/Rtv 300/100 mg (Test)
C0h, ng/ml (Reference, n=21; Test, n=19)143.4 ± 269.8102.5 ± 157.2
Cmin, ng/ml (Reference, n=20; Test, n=18)60.42 ± 73.1743.97 ± 36.29
Cmax, ng/ml (Reference, n=20; Test, n=19)1834 ± 10091740 ± 1149
PrimaryPharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment A: Atazanavir (ATV)/Rtv 300/100 mg (Results for AUC24hr)

The table below shows the pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/rtv 300/100 mg pretreatment (Reference) and at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

Time frame:
Day -1 (Reference); Week 2 (Test)
Reported as:
Mean · ng.h/ml
Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment A: Atazanavir (ATV)/Rtv 300/100 mg (Results for AUC24hr)
ng.h/mlATV/Rtv 300/100 mg (Reference)ATV/Rtv 300/100 mg (Test)
Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment A: Atazanavir (ATV)/Rtv 300/100 mg (Results for AUC24hr)12560 ± 664311120 ± 6658
PrimaryPharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment B: Atazanavir (ATV)/Rtv 400/100 mg (Results for C0h, Cmin, and Cmax)

The table below shows pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin), maximum plasma concentration (Cmax), and area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

Time frame:
Day -1 (Reference); Week 2 (Test)
Reported as:
Mean · ng/ml
Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment B: Atazanavir (ATV)/Rtv 400/100 mg (Results for C0h, Cmin, and Cmax)
ng/mlATV/Rtv 300/100 mg (Reference)ATV/Rtv 400/100 mg (Test)
C0h, ng/ml (Reference, n=22; Test, n=20)109.2 ± 94.50163.4 ± 240.2
Cmin, ng/ml64.70 ± 51.8075.68 ± 69.98
Cmax, ng/ml (Reference, n=22)1882 ± 10261847 ± 859.9
PrimaryPharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment B: Atazanavir (ATV)/Rtv 400/100 mg (Results for AUC24hr)

The table below shows pharmacokinetic (PK) results of low-dose ritonavir (rtv) when administered as atazanavir (ATV)/ritonavir (rtv) 300/100 mg pretreatment (Reference) and when administered as ATV/rtv 400/100 mg at Week 2 after treatment (Test). Results are expressed as the area under the plasma concentration-time curve from time of intake to 24 hours after dosing (AUC24hr).

Time frame:
Day -1 (Reference); Week 2 (Test)
Reported as:
Mean · ng.h/ml
Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment B: Atazanavir (ATV)/Rtv 400/100 mg (Results for AUC24hr)
ng.h/mlATV/Rtv 300/100 mg (Reference)ATV/Rtv 300/100 mg (Test)
Pharmacokinetic Results of Low-Dose Ritonavir (Rtv): Treatment B: Atazanavir (ATV)/Rtv 400/100 mg (Results for AUC24hr)13880 ± 819813660 ± 6778
PrimaryPharmacokinetic Results of Etravirine (ETR) (Results for C0h, Cmin, and Cmax)

The table below shows pharmacokinetic (PK) results of ETR in the current study expressed as the predose plasma concentration (C0h), minimum plasma concentration (Cmin) and maximum plasma concentration (Cmax).

Time frame:
Week 2
Reported as:
Mean · ng/ml
Pharmacokinetic Results of Etravirine (ETR) (Results for C0h, Cmin, and Cmax)
ng/mlATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
C0h (Treatment B, n=19)422.2 ± 327.9316.6 ± 215.4
Cmin (Treatment A, n=16; Treatment B, n=18)425.1 ± 328.1286.5 ± 198.0
Cmax (Treatment A, n=18; Treatment B, n=18)773.0 ± 360.5628.7 ± 294.0
PrimaryPharmacokinetic Results of Etravirine (ETR) (Results for AUC12hr)

The table below shows pharmacokinetic (PK) results of ETR in the current study expressed as the area under the plasma concentration-time curve from time of intake to 12 hours after dosing (AUC12hr).

Time frame:
Week 2
Reported as:
Mean · ng.h/mL
Pharmacokinetic Results of Etravirine (ETR) (Results for AUC12hr)
ng.h/mLATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Pharmacokinetic Results of Etravirine (ETR) (Results for AUC12hr)7629 ± 42135171 ± 2695
PrimaryPercentage of Participants With Undetectable Plasma Viral Load (VL) Values (<50 Copies/mL) at Week 48

The table below shows the percentage of participants wih undetectable plasma viral load (VL) values (\<50 copies/mL) at Week 48 using the Non-Completing = Failure (NC=F) imputation method (ie, participants who discontinued early were counted as nonresponders by having their VL values after discontinuation imputed with their baseline value, thus resulting in a 0 change).

Time frame:
Week 48
Reported as:
Number · Percentage of Participants
Percentage of Participants With Undetectable Plasma Viral Load (VL) Values (<50 Copies/mL) at Week 48
Percentage of ParticipantsATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Percentage of Participants With Undetectable Plasma Viral Load (VL) Values (<50 Copies/mL) at Week 4850.0 (28.2 to 71.8)45.5 (45.5 to 67.8)
SecondaryChange From Prebaseline in CD4+ Cell Count Over Time

The table below shows the mean change from prebaseline over time in CD4+ cell count using the Non-Completing = Failure (NC=F) imputation method.

Time frame:
Prebaseline, Baseline, Weeks 4, 12, 24, 48
Reported as:
Mean · CD4+ cell count
Change From Prebaseline in CD4+ Cell Count Over Time
CD4+ cell countATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Baseline16 ± 11.88 ± 18
Week 455 ± 15.446 ± 27.4
Week 1231 ± 15.072 ± 23.5
Week 2454 ± 22.083 ± 23.2
Week 48105 ± 31.1132 ± 32.6
SecondaryThe Percentage of Participants With a Virologic Response Using the Non-Completing = Failure (NC=F) Imputation Method

The table below shows the percentage of participants per time point with a virologic response defined as having a plasma viral load (VL) \<50 copies/mL, and with plasma VL \<400 copies/mL using the Non-Completing = Failure (NC=F) imputation method (ie, participants who discontinued early were counted as nonresponders by having their VL values after discontinuation imputed with their Baseline value, thus resulting in a 0 change).

Time frame:
Baseline, Weeks 4, 12, 24, 48
Reported as:
Number · Percentage of Participants
The Percentage of Participants With a Virologic Response Using the Non-Completing = Failure (NC=F) Imputation Method
Percentage of ParticipantsATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
<50 copies/mL, Baseline9.19.1
<50 copies/mL, Week 431.836.4
<50 copies/mL, Week 1259.159.1
<50 copies/mL, Week 2463.663.6
<50 copies/mL, Week 4850.045.5
<400 copies/mL, Baseline40.940.9
<400 copies/mL, Week 477.377.3
<400 copies/mL, Week 1268.281.8
<400 copies/mL, Week 2472.772.7
<400 copies/mL, Week 4850.059.1
SecondaryThe Percentage of Participants With a Virologic Response Using the Time to Loss of Virologic Response (TLOVR) Imputation Method

The table below shows the percentage of participants with a virologic response defined as a viral load \<50 Copies/mL and \<400 Copies/mL per time point calculated using the time to loss of virologic response (TLOVR) imputation method.

Time frame:
Baseline, Weeks 4, 12, 24, 48
Reported as:
Number · Percentage of Particpants
The Percentage of Participants With a Virologic Response Using the Time to Loss of Virologic Response (TLOVR) Imputation Method
Percentage of ParticpantsATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment A)
<50 copies/mL, Baseline9.14.5
<50 copies/mL, Week 431.836.4
<50 copies/mL, Week 1259.154.5
<50 copies/mL, Week 2463.659.1
<50 copies/mL, Week 4845.550.0
<400 copies/mL, Baseline36.440.9
<400 copies/mL, Week 477.377.3
<400 copies/mL, Week 1268.286.4
<400 copies/mL, Week 2468.268.2
<400 copies/mL, Week 4859.154.5
SecondaryThe Percentage of Participants With a Virologic Response (Plasma Viral Load < 50 Copies/mL) at Week 48 Using the Snapshot Analysis Method

The table below provides the results from the snapshot analysis method that includes the percentage of participants with virologic response (\<50 copies/mL), the percentage of participants who were virologic failures (VF) (\>50 copies/mL, discontinued prior to time X for reasons of VF or for other reasons, except for VF or adverse event, with a last viral load \>50 copies/mL), and the percentage of participants with no viral load (VL) data available at Week 48.

Time frame:
Week 48
Reported as:
Number · Percentage of Participants
The Percentage of Participants With a Virologic Response (Plasma Viral Load < 50 Copies/mL) at Week 48 Using the Snapshot Analysis Method
Percentage of ParticipantsATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Virologic Response50.045.5
Virologic Failure31.836.4
No VL Data Available18.218.2
SecondaryChange From Pre-Baseline in Log10 Viral Load Over Time

The table below shows the mean change from prebaseline over time in log10 (Copies/mL) plasma viral load using the Non-Completing = Failure (NC=F) imputation method.

Time frame:
Pre-Baseline, Baseline, Weeks 4, 12, 24, 48
Reported as:
Mean · log10 (Copies/mL)
Change From Pre-Baseline in Log10 Viral Load Over Time
log10 (Copies/mL)ATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Baseline-1.4 ± 0.14-1.4 ± 0.18
Week 4-1.9 ± 0.18-1.8 ± 0.15
Week 12-1.7 ± 0.26-2.0 ± 0.23
Week 24-1.8 ± 0.24-1.8 ± 0.27
Week 48-1.4 ± 0.24-1.4 ± 0.29
SecondaryTime to Confirmed Virologic Response

The table below provides the time in days it took participants to reach a confirmed virologic response defined as a plasma viral load (VL) \<50 copies/mL, and plasma VL \<400 copies/mL analyzed according to the Time to Loss of Virologic Response (TLOVR) imputation method.

Time frame:
Prebaseline to Week 48
Reported as:
Median · Days
Time to Confirmed Virologic Response
DaysATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Plasma VL < 50 copies/mL71.0 ± 10.8776.0 ± 9.95
Plasma VL < 400 copies/mL28.0 ± 5.0228.0 ± 6.47
SecondaryTime to Virologic Failure

The table below shows the number of days to virologic failure defined as a plasma viral load (VL) \> 50 copies/mL for participants who had been virologic responders (ie, having a plasma VL \<50, and \<400 copies/mL according to the time to loss of virologic response \[TLOVR\] imputation method). Time to virologic failure was the time to subsequent loss of virologic response, and the time was calculated from Prebaseline (Week -2). Participants who never achieved a virologic response were defined as nonresponders and counted as virologic failures on Day 1.

Time frame:
Prebaseline to Week 48
Reported as:
Median · Days
Time to Virologic Failure
DaysATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
Virologic Responders (Plasma VL < 50 copies/mL)318.0 ± 31.90NA ± 22.46
Virologic Responders (Plasma VL < 400 copies/mL)NA ± 28.92NA ± 17.28

Adverse events

Collected over Up to a maximum of 56 weeks.. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
ATV/Rtv 300/100 mg (Treatment A)—4/25 (16%)21/25 (84%)
ATV/Rtv 400/100 mg (Treatment B)—2/25 (8%)15/25 (60%)
Most frequent serious events
Most frequent serious events
EventATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
AnaemiaBlood and lymphatic system disorders1/250/25
GastroenteritisInfections and infestations1/250/25
Meningitis asepticInfections and infestations1/250/25
PneumoniaInfections and infestations1/251/25
SinusitisInfections and infestations1/250/25
Bowen's diseaseNeoplasms benign, malignant and unspecified (incl cysts and polyps)0/251/25
Metastatic malignant melanomaNeoplasms benign, malignant and unspecified (incl cysts and polyps)1/250/25
HeadacheNervous system disorders0/251/25
AsthmaRespiratory, thoracic and mediastinal disorders1/250/25
Accidental overdoseInjury, poisoning and procedural complications1/250/25
Most frequent other events
Showing 10 of 22
Most frequent other events
EventATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)
CoughRespiratory, thoracic and mediastinal disorders5/254/25
NauseaGastrointestinal disorders4/251/25
HyperbilirubinaemiaHepatobiliary disorders3/250/25
InfluenzaInfections and infestations2/253/25
Upper respiratory tract infectionInfections and infestations2/253/25
Blood bilirubin increasedInvestigations3/252/25
HeadacheNervous system disorders3/253/25
RashSkin and subcutaneous tissue disorders3/251/25
Abdominal painGastrointestinal disorders0/252/25
DiarrhoeaGastrointestinal disorders2/252/25

Baseline characteristics

Age, Categorical
Age, Categorical(Participants)ATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)Total
<=18 years011
Between 18 and 65 years252449
>=65 years000
Age Continuous
Age Continuous(years)ATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)Total
Mean41.2 ± 10.4439.8 ± 9.3740.5 ± 9.85
Sex: Female, Male
Sex: Female, Male(Participants)ATV/Rtv 300/100 mg (Treatment A)ATV/Rtv 400/100 mg (Treatment B)Total
Female121325
Male131225
08

Study locations

19 sites
  • Little Rock, Arkansas, United States
  • Bakersfield, California, United States
  • Beverly Hills, California, United States
  • Orlando, Florida, United States
  • Tampa, Florida, United States
  • Vero Beach, Florida, United States
  • West Palm Beach, Florida, United States
  • Macon, Georgia, United States
  • Dallas, Texas, United States
  • Houston, Texas, United States
  • Buenos Aires, Argentina
  • Cordoba, Argentina
  • Paris Cedex 10, France
  • Paris, France
  • Tourcoing, France
  • Bloemfontein, South Africa
  • Cape Town, South Africa
  • George, South Africa
  • Bangkok, Thailand
09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Sep 30, 2013, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00896051
Lead sponsor
Janssen R&D Ireland
Responsible party
Sponsor
First posted
May 11, 2009
Start date
Aug 2009
Primary completion
Apr 2012
Completion
Apr 2012
Results posted
Sep 30, 2013
Last update
Sep 30, 2013

Study contacts

Janssen R&D Ireland Clinical Trial
study director · Janssen R&D Ireland

Oversight

Data monitoring committee
Yes
View the source record on ClinicalTrials.gov ↗

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