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Virological and Immunological Safety of a Dose Reduction Strategy Antiretroviral Regimen With Efavirenz / Tenofovir / Emtricitabine

Virological and Immunological Safety of a Dose Reduction Strategy Antiretroviral Regimen With Efavirenz / Tenofovir / Emtricitabine

Status
Completed
Phases
Phase 4
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT01778413
Acronym
A-TRI-WEEK
Enrollment
61
Registered
2013-01-29
Start date
2013-06-03
Completion date
2015-07-21
Last updated
2025-07-18

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

Conditions

HIV

Brief summary

The main objective is to determine the feasibility of maintaining virologic suppression on standard plasma viral load by dose reduction of ATRIPLA ®.

Detailed description

The main objective of this study is to determine the feasibility of maintaining virologic suppression on standard plasma viral load (limit of detection 37 copies / mL) of a dose reduction strategy of ATRIPLA ® once a day to three tablets per week in patients infected with HIV-1 with sustained suppression of plasma viral load standard for more than two years.

Interventions

Sponsors

Anna Cruceta
Lead SponsorOTHER

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

* Adults (≥ 18 years) * HIV-1 infection, clinical stability, and treatment with ATRIPLA ® for the past two years. * Standard plasma viral load below the limit of detection for at least 2 years. * CD4 count above 350/mm3 at the time of the consideration for the study. * Negative pregnancy test in women of childbearing age, and commitment acceptable contraceptive use for at least 2 weeks before day 1 and until at least 6 months after the last dose of study drug. * Patients should be given written informed consent * In the opinion of the investigator, be able to follow the design of the protocol visits

Exclusion criteria

* Patients who have experienced virologic failure prior to any antiretroviral regimen * Evidence of previous mutations versus efavirenz, tenofovir and emtricitabine * Use of any other chronic treatment plus ATRIPLA has been introduced in the 6 months prior to entry of the patient in the study * Any contraindication to study drug * Any condition not ensure proper adherence to the study at the discretion of the attending physician of the patient * Uncontrolled preexisting psychiatric illness * Any current sign of alcoholism or other drug use.

Design outcomes

Primary

MeasureTime frameDescription
Proportion of Patients Free of Treatment Failure (Noncompleter = Failure) at 24 Weeks.24 weeksTreatment failure defined as any of the following possibilities occurring within the 24-week study framework: virological failure (confirmed plasma viral load 37 copies/ml), discontinuation of the antiretroviral therapy schedule irrespective of the reason, consent withdrawal, lost to follow-up, pregnancy, inability to comply with the study or any other reason that could make the doctor in charge consider the cessation of the study.

Secondary

MeasureTime frameDescription
The Change From Baseline to 24 Weeks in the Viral Reservoir in Peripheral Blood Mononuclear Cellsbaseline and 6 months
Immunologicalbaseline and 6 monthsChanges from baseline to 24 weeks in the production of TRECs, the immunological profile of activation (CD38 and HLA-DR) and senescence (CD57 and CD28) in CD4 and CD8 lineages in the proportions of naive T cells effector and memory (CCR7 and CD45RA), and changes in the levels of apoptosis in vitro by staining with annexin V.
Changes in Plasma Levels of Efavirenz.baseline and 6 months
Changes in Sleep Quality (Pittsburgh Sleep Quality Index).baseline and 6 months
The Proportion of Patients With Ultrasensitive Viral Load (<1 Copy / mL) After 24 Weeks.24 weeks
Changes in Plasma Levels of Vitamin D.baseline and 6 months
Changes in Lipid Profile.baseline and 6 months
Changes in Estimated Glomerular Filtration Rate.baseline and 6 months
General Safety (Report Adverse Events, Serious Adverse Events and Treatment Discontinuation Due to Adverse Events)24 weeks

Countries

Spain

Participant flow

Recruitment details

Participants were recruited between 3 June 2013 and 30 May 2014 at Hospital Clínic of Barcelona.

Pre-assignment details

68 patients were assessed for eligibility, 61 underwent randomization and received at least one dose of study drugs. Seven patients were excluded because of refusal to participate (lack of time, n¼4; lack of interest, n¼1; fear of viral failure, n¼1) or evidence of illicit drug consumption (n¼1).

Participants by arm

ArmCount
ATRIPLA Three Days a Week (3W)
Atripla (600 mg/200 mg/245 mg) three days a week (Mondays, Wednesdays and Fridays).
30
ATRIPLA One Time a Day (OD)
Atripla (600 mg/200 mg/245 mg) one time a day.
31
Total61

Baseline characteristics

CharacteristicATRIPLA Three Days a Week (3W)ATRIPLA One Time a Day (OD)Total
Age, Continuous47.8 years48.5 years48.2 years
Race/Ethnicity, Customized
Ethnicity
Caucasian
19 Participants21 Participants40 Participants
Race/Ethnicity, Customized
Ethnicity
Hispanic
11 Participants10 Participants21 Participants
Sex: Female, Male
Female
3 Participants4 Participants7 Participants
Sex: Female, Male
Male
27 Participants27 Participants54 Participants

Adverse events

Event typeEG000
affected / at risk
EG001
affected / at risk
deaths
Total, all-cause mortality
0 / 300 / 31
other
Total, other adverse events
13 / 3011 / 31
serious
Total, serious adverse events
0 / 300 / 31

Outcome results

Primary

Proportion of Patients Free of Treatment Failure (Noncompleter = Failure) at 24 Weeks.

Treatment failure defined as any of the following possibilities occurring within the 24-week study framework: virological failure (confirmed plasma viral load 37 copies/ml), discontinuation of the antiretroviral therapy schedule irrespective of the reason, consent withdrawal, lost to follow-up, pregnancy, inability to comply with the study or any other reason that could make the doctor in charge consider the cessation of the study.

Time frame: 24 weeks

ArmMeasureCategoryValue (COUNT_OF_PARTICIPANTS)
ATRIPLA Three Days a Week (3W)Proportion of Patients Free of Treatment Failure (Noncompleter = Failure) at 24 Weeks.Patients free of treatment failure30 Participants
ATRIPLA Three Days a Week (3W)Proportion of Patients Free of Treatment Failure (Noncompleter = Failure) at 24 Weeks.Patients with treatment failure0 Participants
ATRIPLA One Time a Day (OD)Proportion of Patients Free of Treatment Failure (Noncompleter = Failure) at 24 Weeks.Patients free of treatment failure31 Participants
ATRIPLA One Time a Day (OD)Proportion of Patients Free of Treatment Failure (Noncompleter = Failure) at 24 Weeks.Patients with treatment failure0 Participants
Secondary

Changes in Estimated Glomerular Filtration Rate.

Time frame: baseline and 6 months

Secondary

Changes in Lipid Profile.

Time frame: baseline and 6 months

Secondary

Changes in Plasma Levels of Efavirenz.

Time frame: baseline and 6 months

Secondary

Changes in Plasma Levels of Vitamin D.

Time frame: baseline and 6 months

Secondary

Changes in Sleep Quality (Pittsburgh Sleep Quality Index).

Time frame: baseline and 6 months

Secondary

General Safety (Report Adverse Events, Serious Adverse Events and Treatment Discontinuation Due to Adverse Events)

Time frame: 24 weeks

Secondary

Immunological

Changes from baseline to 24 weeks in the production of TRECs, the immunological profile of activation (CD38 and HLA-DR) and senescence (CD57 and CD28) in CD4 and CD8 lineages in the proportions of naive T cells effector and memory (CCR7 and CD45RA), and changes in the levels of apoptosis in vitro by staining with annexin V.

Time frame: baseline and 6 months

Secondary

The Change From Baseline to 24 Weeks in the Viral Reservoir in Peripheral Blood Mononuclear Cells

Time frame: baseline and 6 months

Secondary

The Proportion of Patients With Ultrasensitive Viral Load (<1 Copy / mL) After 24 Weeks.

Time frame: 24 weeks

Source: ClinicalTrials.gov · Data processed: Mar 6, 2026