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CompletedNCT00643968COOLUpdated Jun 30, 2008

Tenofovir DF + Efavirenz (TDF+EFV) Versus Tenofovir DF + Efavirenz + Lamivudine (TDF+EFV+3TC) Maintenance Regimen in Virologically Controlled Patients: COOL Trial

A Phase 4 interventional study of EFV+TDF and EFV+3TC+TDF in HIV Infections, sponsored by Gilead Sciences. Completed at 1 site in France. Open to participants aged 18 Years to 70 Years. Per ClinicalTrials.gov, last updated 2008-06-30.

Sponsored by Gilead Sciences · Phase 4 and Interventional

Phase
Phase 4
Study type
Interventional
Enrollment
140
Allocation
Randomized
Ages
18 Years to 70 Years
Sex
All
01

Study summary

Primary objective: Evaluation of the efficacy of TDF+3TC+EFV versus TDF+EFV QD to maintain plasma HIV-1 RNA BLQ (\< 50 copies/mL) (c/mL) at 48 weeks (W48)

Main Secondary objectives:

Comparison of the two arms for genotypic resistance profile in case of virological failure

CD4 changes from baseline

Evolution of the lipid profile and morphological changes in fat distribution, and safety

Efficacy and genotypic profile data, results of lipid markers, morphological changes and main biological parameters

02

Conditions studied

  • HIV Infections

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Keywords

  • HIV virological control
  • Lipid profile and morphological fat distribution
  • Treatment Experienced
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 140 is above the median of 83 across 3,251 interventional studies indexed under HIV Infections.

Browse HIV Infections studies →

Lead sponsor

Gilead Sciences is the lead sponsor of 680 studies on the registry; 24 are open to participants now.

Of its 259 completed or terminated interventional studies of FDA-regulated products, 249 (96%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • Stable HAART ≥ 3 months
  • HIV-1 RNA \< 50 c/mL ≥ 6 months
  • No HAART failure history

Exclusion criteria

Exclusion Criteria:

  • Weight > 45 kg
  • No CD4+ cell count criteria
  • No significant laboratory or clinical abnormalities
  • Creatinine Clearance > 60 mL/min
05

Study design

Phase
Phase 4
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
140 participants (actual)

Study arms

  • Active comparator
    1

    TDF+EFV

    Drug: EFV+TDF

  • Experimental
    2

    TDF+3TC+EFV

    Drug: EFV+3TC+TDF

Interventions

  • DrugEFV+TDF
  • DrugEFV+3TC+TDF
06

What researchers measure

Primary outcomes

  1. Evaluation of the efficacy of TDF+3TC+EFV versus TDF+EFV QD to maintain plasma HIV-1 RNA BLQ (< 50 copies/mL) (c/mL) at 48 weeks (W48)

    Time frame: 48 wks

Secondary outcomes

  1. Comparison of the two arms for genotypic resistance profile in case of virological failure

    Time frame: 48 wks

  2. CD4 changes from baseline

    Time frame: 48 wks

  3. Evolution of the lipid profile and morphological changes in fat distribution, and safety

    Time frame: 48 wks

07

Study locations

1 site
  • France and French West Indies
    Paris, France
08

References and documents

Related links

09

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Jun 30, 2008, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT00643968
Lead sponsor
Gilead Sciences
First posted
Mar 26, 2008
Start date
Mar 2003
Primary completion
Jun 2005
Completion
Sep 2005
Last update
Jun 30, 2008

Study contacts

Aldo Trylesinski, MD
principal investigator · Gilead Sciences

Oversight

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

Not currently enrolling

This study is completed, as verified in Jun 2008. You cannot join it, but the record below documents what was studied.

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