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CompletedNCT00982878Updated Nov 4, 2019Results posted

The Maraviroc Central Nervous System (CNS) Study

A Phase 1 interventional study of Maraviroc in HIV Infections, sponsored by Imperial College London. Completed at 1 site in United Kingdom. Open to participants aged 18 Years to 65 Years. Per ClinicalTrials.gov, last updated 2019-11-04.

Sponsored by Imperial College London · Phase 1, Interventional, and Treatment

Phase
Phase 1
Study type
Interventional
Enrollment
13
Allocation
Not applicable
Ages
18 Years to 65 Years
Sex
All
01

Study summary

The purpose of this study is to describe the Central Nervous System exposure of maraviroc in HIV-1 infected subjects receiving a stable antiretroviral regimen, including maraviroc, at steady state.

Read the detailed description

15 HIV-1 infected subjects currently receiving stable antiretroviral therapy will be recruited. At study entry, within 14 days of screening procedures, subjects will commence maraviroc dosed at 150 mg twice daily. For the rest of study period antiretroviral therapy will comprise:

  • Truvada™ one tablet once daily at 0900
  • Kaletra™ two tablets twice daily 0900 and 2100
  • maraviroc 150 mg twice daily at 0900 and 2100

Subjects will attend for regular clinic visits during study treatment phase.

On day 15, subjects will attend the unit in the morning prior to usual dosing time. Blood with be drawn to assess plasma maraviroc concentration pre dose and pre lumbar puncture. A lumbar puncture will be performed under standard aseptic techniques to asses CSF maraviroc concentration and routine CSF parameters.

On completion of this study visit, subjects will cease maraviroc, continue on their usual antiretroviral regimen and attend for a follow up visit 10 days later.

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Conditions studied

  • HIV Infections

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Keywords

  • 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 13 is below the median of 83 across 3,251 interventional studies indexed under HIV Infections.

Browse HIV Infections studies →

Lead sponsor

Imperial College London is the lead sponsor of 824 studies on the registry; 178 are open to participants now.

Of its 9 completed or terminated interventional studies of FDA-regulated products, 6 (67%) have results posted.

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

04

Who can participate

Ages eligible
18 Years to 65 Years
Sexes eligible
All
Accepts healthy volunteers
No

Inclusion criteria

  • HIV-1 infected males or females
  • signed informed consent
  • plasma HIV RNA \< 50 copies/mL at screening and on at least one other occasion over the last 3 months
  • currently receiving a stable antiretroviral regimen comprising of:

    • tenofovir 245 mg daily
    • emtricitabine 200 mg daily
    • a boosted protease inhibitor
  • no previous protease inhibitor resistance documented on HIV-1 genotypic resistance testing
  • Between 18 to 65 years of age, inclusive
  • subjects in good health upon medical history, physical exam, and laboratory testing
  • Female subjects who are heterosexually active and of childbearing potential (i.e., not surgically sterile or at least two years post menopausal) must practice contraception as follows from screening through completion of the study including 30 days following last dose of study drug:

    • barrier contraceptives (condom, diaphragm with spermicide)
    • IUD PLUS a barrier contraceptive
  • Female subjects of childbearing potential must have a negative pregnancy test.
  • Male subjects who are heterosexually active must use two forms of barrier contraception (e.g., condom with spermicide) during heterosexual intercourse, from screening through completion of the study including 30 days following last dose of study drug.
  • Have no serologic evidence of active HBV infection evidenced by negative hepatitis B surface antigen and no serologic evidence of hepatitis C virus infection by a HCV antibody or HCV PCR.
  • Have screening laboratory results (haematology, chemistry, and urinalysis) that fall within the normal range of the central laboratory's reference ranges unless the results have been determined by the Investigator to have no clinical significance

Exclusion criteria

Exclusion Criteria:

  • current alcohol abuse or drug dependence
  • active opportunistic infection or significant co-morbidities including dementia
  • current prohibited concomitant medication (as listed in section 4.1.4)
  • Have a body mass index (BMI) > 32
  • Contraindication to lumbar puncture examination. Such as:

    • Existing neurological diseases
    • Bleeding disorders
05

Study design

Phase
Phase 1
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
13 participants (actual)

Study arms

  • Experimental
    Maraviroc

    Drug: Maraviroc

Interventions

  • DrugMaraviroc

    150mg twice daily

06

What researchers measure

Primary outcomes

  1. CSF (Cerebrospinal Fluid) : Plasma Ratio of Maraviroc 1H Magnetic Resonance Spectroscopy (1H-MRS)

    To describe the CNS exposure of maraviroc in HIV-1 infected subjects receiving a stable antiretroviral regimen, including maraviroc, at steady state. It were assessed by in vivo cerebral (1)H magnetic resonance spectroscopy ((1)H-MRS). Cerebral MRS imaging (T1- and T2-weighted images) was performed on a Phillips Achieva™ 1.5 Tesla magnetic resonance (MR) scanner (Phillips NV, Best, Netherlands) and studied by an experienced neuroradiologist

    Time frame: 15 days

Secondary outcomes

  1. Number of Participants With Adverse Events

    To evaluate the short term safety and tolerability of maraviroc in HIV-1 infected subjects on stable antiretroviral therapy

    Time frame: 15 days

07

Results

Posted Nov 4, 2019

Participant flow

Participant flow — Overall Study
MilestoneMaraviroc
Started13
Completed12
Not completed1
Withdrew: Physician decision1

Outcome measures

PrimaryCSF (Cerebrospinal Fluid) : Plasma Ratio of Maraviroc 1H Magnetic Resonance Spectroscopy (1H-MRS)

To describe the CNS exposure of maraviroc in HIV-1 infected subjects receiving a stable antiretroviral regimen, including maraviroc, at steady state. It were assessed by in vivo cerebral (1)H magnetic resonance spectroscopy ((1)H-MRS). Cerebral MRS imaging (T1- and T2-weighted images) was performed on a Phillips Achieva™ 1.5 Tesla magnetic resonance (MR) scanner (Phillips NV, Best, Netherlands) and studied by an experienced neuroradiologist

Time frame:
15 days
Reported as:
Mean · ratio
CSF (Cerebrospinal Fluid) : Plasma Ratio of Maraviroc 1H Magnetic Resonance Spectroscopy (1H-MRS)
ratioMaraviroc
CSF (Cerebrospinal Fluid) : Plasma Ratio of Maraviroc 1H Magnetic Resonance Spectroscopy (1H-MRS)1.01 (0.57 to 1.61)
SecondaryNumber of Participants With Adverse Events

To evaluate the short term safety and tolerability of maraviroc in HIV-1 infected subjects on stable antiretroviral therapy

Time frame:
15 days
Reported as:
Count of participants · Participants
Number of Participants With Adverse Events
ParticipantsMaraviroc
Number of Participants With Adverse Events0

Adverse events

Collected over 15 days. Non-serious events are listed at a 5% frequency threshold.

Adverse event summary by group
GroupDeathsSeriousOther
Maraviroc0/12 (0%)0/12 (0%)0/12 (0%)

Baseline characteristics

Age, Continuous
Age, Continuous(years)Maraviroc
Mean42 ± 7.9
Sex: Female, Male
Sex: Female, Male(Participants)Maraviroc
Female3
Male9
Race (NIH/OMB)
Race (NIH/OMB)(Participants)Maraviroc
American Indian or Alaska Native0
Asian0
Native Hawaiian or Other Pacific Islander0
Black or African American7
White4
More than one race1
Unknown or Not Reported0
Region of Enrollment
Region of Enrollment(participants)Maraviroc
United Kingdom12
Years since HIV diagnosis
Years since HIV diagnosis(years)Maraviroc
Mean11 ± 4.6
Baseline CD4 cell count
Baseline CD4 cell count(cells/ul)Maraviroc
Mean503 ± 199
BMI
BMI(kg/m^2)Maraviroc
Mean28 ± 3.5
08

Study locations

1 site
  • Imperial College Healthcare NHS Trust
    London, W2 1NY, United Kingdom
09

References and documents

Publications

  • Garvey L, Nelson M, Latch N, Erlwein OW, Allsop JM, Mitchell A, Kaye S, Watson V, Back D, Taylor-Robinson SD, Winston A. CNS effects of a CCR5 inhibitor in HIV-infected subjects: a pharmacokinetic and cerebral metabolite study. J Antimicrob Chemother. 2012 Jan;67(1):206-12. doi: 10.1093/jac/dkr427. Epub 2011 Oct 10. PubMed 21987241 ↗

Individual participant data

Plan to share: No

10

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Nov 4, 2019, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
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Registry details

Key details

Study ID
NCT00982878
Lead sponsor
Imperial College London
Collaborators
Pfizer
Responsible party
Alan Winston (Reader and Honorary HIV consultant, Imperial College London) — Principal investigator
First posted
Sep 23, 2009
Start date
Sep 2009
Primary completion
Jul 2010
Completion
Feb 2011
Results posted
Nov 4, 2019
Last update
Nov 4, 2019

Study contacts

Alan Winston
principal investigator · Imperial College London

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

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