ClinicalTrials.gg
CompletedNCT02509195Updated Feb 28, 2018

SSAT064: Pharmacokinetics of Abacavir/Lamivudine/Dolutegravir in HIV Patients of 60 Years and Over

A Phase 4 interventional study of Triumeq in HIV, sponsored by St Stephens Aids Trust. Completed at 1 site in United Kingdom. Open to participants aged 60 Years and older. Per ClinicalTrials.gov, last updated 2018-02-28.

Sponsored by St Stephens Aids Trust · Phase 4, Interventional, and Treatment

Phase
Phase 4
Study type
Interventional
Enrollment
40
Allocation
Not applicable
Ages
60 Years and older
Sex
All
01

Study summary

The purpose of this study is to identify the effects that ageing may have on the drug levels, the safety and the efficacy of Dolutegravir.

These effects will be measured in people who are aged 60 or over and taking antiretroviral therapy for HIV infection.

Dolutegravir is a newly licenced anti HIV medication, which belongs to a class of drugs called Integrase Inhibitors. It is taken with two other wellknown agents, Abacavir and Lamivudine, as part of a one tablet once a day regimen, called Triumeq. There is little data available on Dolutegravir in the context of older age. The HIV population is ageing and the investigators know that older age can significantly change the effects and side effects of medications, including that of antiretrovirals.

The investigators aim to investigate the treatment outcomes in older people taking Dolutegravir including the tolerability, efficacy and safety of the drug.

The study will also assess the quality of life (wellbeing of individuals) and cognition (mental abilities) of people aged 60 or over, taking Dolutegravir. The results from this study may inform treatment choices and monitoring in this population in the future.

The duration of involvement in the study will be 6 months with an additional screening visit and a checkup visit 10 days after end of study visit.

Read the detailed description

Protocol Number: SSAT 064

EudraCT Number: 2014-004970-40

Name of Investigational Product:Triumeq®

Name of active ingredients:Abacavir/lamivudine/dolutegravir

Study title: An open label study to investigate the safety and efficacy of abacavir/lamivudine/dolutegravir and the pharmacokinetic profile of dolutegravir in HIV-infected patients of 60 years of age and older

Objectives:

Primary:

  • To assess the steady state pharmacokinetics of dolutegravir 50 mg once daily in HIV-infected subjects of 60 years or greater

Secondary:

  • To assess the safety, tolerability, patient quality of life and sleep quality and maintenance of HIV viral load control of abacavir/lamivudine/dolutegravir once daily in HIV-infected subjects of 60 years or greater
  • To measure the metabolic profile in patients over the age of 60 with HIV infection who switch antiretroviral regime (metabonomics)
  • To investigate cerebral function via cognitive testing before and after a switch in antiretroviral therapy to dolutegravir containing regimens
  • To investigate the relationship between genetic polymorphisms and exposure to dolutegravir

Study design:Multi -centre, 180 days (excluding screening and follow up), open label, prospective, one phase pharmacokinetic/pharmacodynamic study

Indication:HIV-1 infection

Methodology:HIV-1 infected subjects will be recruited from four different HIV clinics. Eligible subjects currently receiving stable antiretroviral therapy with an undetectable plasma HIV RNA and with no evidence of previous HIV resistance mutations on genotypic resistance testing, will switch their treatment to abacavir/lamivudine/dolutegravir and undergo a 24 hour pharmacokinetic assessment at day 28 (+/- 1). Monitoring of adverse events (not at screening), viral load, quality of life and sleep quality, will occur at screening and on days 1, 28, 90, and 180. Cognitive function will be tested at screening, baseline and day 180. A sleep diary will be completed between day 1 and day 28.

Planned sample size:A sample size of 40 patients would provide at least 80% power to detect changes in dolutegravir exposure in older people.

Up to 45 subjects may be screened to have 40 patients completing the study.

Summary of eligibility criteria:HIV-1 infected subjects currently receiving stable antiretroviral therapy with undetectable plasma HIV RNA and no evidence of previous HIV- resistance mutations on genotypic resistance testing, 60 years old or older (approximately 30% between 60 and 64 and approximately 70% above the age of 65)

Number of study centres: 4 centres:

Chelsea and Westminster Hospital, London Royal Sussex County Hospital, Brighton St. Mary's Hospital Clinical Trials Centre, London Mortimer Market Centre, UCL, London

Duration of treatment: 180 (+/- 7) days

Dose and route of administration: All study drugs will be administered orally to subjects with the following schedule: Abacavir/lamivudine/dolutegravir one pill once daily

Criteria for evaluation:

Pharmacokinetic parameters of dolutegravir will be evaluated on blood drawn on day 28 (+/- 1) at 0 (pre-dose), 1, 2, 3, 4, 8, 12 and 24 hours post dose.

Monitoring of adverse events (not at screening), viral load, quality of life and sleep quality will occur at screening and days 1, 28, 90, and 180. Cognitive function will be tested at screening, baseline and day 180.

Primary Endpoint:

  • Steady state plasma concentrations of dolutegravir when administered to HIV-infected individuals over the age of 60/65 years.

Secondary Endpoints:

  • Safety, tolerability, maintenance of HIV viral load control, quality of life and sleep quality with abacavir/lamivudine/dolutegravir once daily in HIV-infected subjects of 60 years or greater
  • Measurement of the metabolic profile in patients over the age of 60 with HIV infection who switch antiretroviral regime (metabonomics)
  • Cerebral function via cognitive testing before and after a switch in antiretroviral therapy to dolutegravir containing regimens
  • Relationship between genetic polymorphisms and exposure to dolutegravir.
02

Conditions studied

  • HIV
03

In context

Lead sponsor

St Stephens Aids Trust is the lead sponsor of 46 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
60 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. -1 infected males or females
  2. Has voluntarily signed after having enough time to consider the study information.
  3. Is willing to comply with the protocol requirements
  4. Documentation that the subject is negative for the HLA-B*5701 allele, either on historical sample or if none available, at screening.
  5. Aged 60 years and over (approximately 70% of the study participants will be ≥65 year of age), willing to switch therapy as per study protocol with no previous use of dolutegravir
  6. Plasma HIV RNA \< 50 copies/mL at screening (single re-test allowed) and on at least one other occasion over the last 6-8 months
  7. Has a at screening >50 cells/mm3
  8. Currently receiving a stable antiretroviral regimen with no antiretroviral drug switches for at least 3 months prior to planned study baseline.
  9. No previous clinically-significant resistance documented on HIV-1 genotypic resistance to NRTIs and INIs
  10. Subjects in good health upon medical history, physical exam, and laboratory testing and with a clinically managed cardiovascular disease in the opinion of the Investigator
  11. Body mass over 40 kg and (BMI) above or equal to 18 and below 35
  12. Male subjects who are heterosexually active must be willing to use appropriate and consistent dual method during heterosexual intercourse with women of child bearing potential, from screening through to one month post completion of the study. The following combined contraceptive methods are acceptable (please see appendix 3):

    1. Double barrier method:

      • Male Condom combined with a Female Diaphragm with or without a vaginal spermicide* (foam, gel, film, cream, or suppository)
      • Male Condom combined with a Cervical cap** (with spermicide)
    2. Male Condom + one of the following:

      • Combined Oral Contraceptive Pill
      • Combined Contraceptive Patch
      • Combined Vaginal Ring
      • The Progesterone Only Pill
      • Intra-uterine Device (Copper IUD or the IUS)
      • Injectable progestogen (Depo provera®)
      • The progestogen-only Subdermal Implant

Footnotes:

  1. *Cervical caps in women who have given birth is less effective than other methods of contraception.
  2. **Spermicide should be used with caution as this can potentially increase the rate of HIV-1 transmission.
  3. ***It is advised not to use a male and female condom together due to risk of breakage or damage caused by latex friction.

If a female partner has had a total hysterectomy (surgical removal of the womb) or bilateral tubal ligation/clip (surgical sterilization), then she cannot get pregnant and the above section does not apply. If the male subject has had a vasectomy at least 1 month prior to starting the study, he does not need to use any other birth control.

Exclusion criteria

Exclusion Criteria:

  1. History or presence of allergy to the study drugs or their components
  2. Infected with -2
  3. Using any concomitant therapy disallowed as per SPC for the study drugs. The SPC of a drug is updated regularly. The most recent version can be found on http://www.medicines.org.uk/emc/
  4. Known acute viral hepatitis including, but not limited to, A, B, or C
  5. Known chronic and/or C
  6. Tests newly positive for active Hepatitis B (HBsAg positive), or active (PCR positive) at screening visit
  7. Any drug within 30 days prior to the trial drug administration
  8. (ALT) ≥5 times the (ULN), OR ALT ≥3xULN and ≥1.5xULN (with >35% direct bilirubin)
  9. Subjects with moderate to severe hepatic impairment (Class B or greater) as determined by classification
  10. Moderate or severe renal impairment ( \< 50ml/min)
  11. Screening blood result with any grade 3/4 toxicity according to Division of AIDS (DAIDS) grading scale, except: asymptomatic grade 3 glucose, amylase or lipid elevation or asymptomatic grade 4 triglyceride elevation (re-test allowed).
  12. Any condition (including drug/alcohol abuse) or laboratory results which, in the investigator's opinion, interfere with the assessments or completion of the trial.
Terms in these criteria, in plain language(13)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

HIV

The human immunodeficiency virus, which weakens the immune system.

Many studies now accept people whose HIV is controlled on treatment, judged by the viral load and the CD4 count. Check the limits this study sets.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

CD4 count

The number of CD4 cells, a type of white blood cell, in a given amount of blood. It is used to follow how well the immune system is doing in HIV.

BMI (body mass index)

Weight in kilograms divided by height in metres squared. Example: 70 kg and 1.75 m gives 70 ÷ (1.75 × 1.75) ≈ 22.9.

What counts as overweight or obesity differs between countries (some use lower cut-offs), so go by the range the study states.

Contraception

Ways of preventing pregnancy. “Highly effective” methods fail less than 1% of the time a year when used correctly — for example an IUD or an implant.

Criteria usually say which methods count and how long to keep using them after the last dose, sometimes for male participants too. Some studies accept a partner’s vasectomy if it was confirmed successful and that person is the participant’s only sexual partner.

Hepatitis B tests

Hepatitis B is a virus that infects the liver. These are separate tests: HBsAg positive usually means a current infection (a recent vaccination can briefly cause it too); total anti-HBc (HBcAb) positive means an infection now or in the past; HBV DNA measures how much virus is in the blood.

Some studies accept a past infection if HBV DNA is undetectable, sometimes with antiviral medicine during the study. Check what this study allows.

Hepatitis C tests

Hepatitis C is a virus that infects the liver. An HCV antibody test can stay positive after an infection has cleared (and is occasionally positive without one); an HCV RNA test shows whether the virus is there now.

After treatment, hepatitis C counts as cured when HCV RNA is still undetectable 12 weeks or more after the treatment ended. Studies often accept people cured this way.

Investigational drug or device

A drug or device being studied in a clinical trial.

It may be new, or already approved and being studied for another use, dose or form. Criteria often leave out people who took part in another study of one within a recent period, commonly 30 days or five half-lives.

ALT and AST (liver enzymes)

Two enzymes measured in a routine blood test of the liver. Higher levels can mean the liver is under strain or damaged. SGPT and SGOT are older names for ALT and AST.

Criteria usually give a limit as a multiple of the upper limit of normal (ULN), often higher when cancer has spread to the liver.

ULN (upper limit of normal)

The top of the normal range for a blood test, as set by the laboratory that runs it. Each lab prints its own range next to your result.

“≤ 2.5 × ULN” means the result can be up to two and a half times that top value.

Bilirubin

A yellow substance made when red blood cells are broken down, which the liver clears. A high level can mean a problem with the liver or the bile ducts.

Criteria often allow more for people with Gilbert’s syndrome, a harmless inherited condition that raises bilirubin.

Child-Pugh class

A score of how well the liver works in people with liver disease such as cirrhosis: class A is mild, B moderate and C severe.

Creatinine clearance (CrCl)

How quickly the kidneys clear creatinine, a waste product, from the blood. A study may estimate it from a blood test with age, weight and sex (often by the Cockcroft–Gault formula), or measure it using blood and urine collected over a set time. Given in mL/min; higher is better.

05

Study design

Phase
Phase 4
Primary purpose
Treatment
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
40 participants (estimated)

Study arms

  • Experimental
    Switch to Triumeq

    HIV-1 infected subjects currently receiving stable antiretroviral therapy switch their treatment to abacavir/lamivudine/dolutegravir (Triumeq).

    Drug: Triumeq

Interventions

  • DrugTriumeq

    Subjects will take the last dose of their current antiretroviral combination at its usual time on the day before the baseline visit (day 1) and will switch on day 1 to Abacavir/lamivudine/dolutegravir 600mg/300mg/50mg (Triumeq) fixed dose combination once daily between day 1 and day 180.

    Also known as: abacavir/lamivudine/dolutegravir

06

What researchers measure

Primary outcomes

  1. Steady state plasma concentrations of dolutegravir when administered to HIV-infected individuals over the age of 60/65 years.

    Time frame: Day 28

Secondary outcomes

  1. Safety on abacavir/lamivudine/dolutegravir once daily in HIV-infected subjects of 60 years or greater - measured by Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events.

    Time frame: Up to day 190

  2. Tolerability on abacavir/lamivudine/dolutegravir once daily in HIV-infected subjects of 60 years or greater- measured by Division of AIDS (DAIDS) Table for Grading the Severity of Adult and Pediatric Adverse Events.

    Time frame: Up to day 190

  3. Maintenance of HIV viral load control on abacavir/lamivudine/dolutegravir once daily in HIV-infected subjects of 60 years or greater.

    Time frame: Up to day 190

  4. Quality of life on abacavir/lamivudine/dolutegravir once daily in HIV-infected subjects of 60 years or greater.- Measured by questionnaire

    Time frame: Up to day 190

  5. Sleep Quality on abacavir/lamivudine/dolutegravir once daily in HIV-infected subjects of 60 years or greater - Measured by questionnaire

    Time frame: Up to day 190

  6. Measurement of the metabolic profile in patients over the age of 60 with HIV infection who switch antiretroviral regime (metabonomics)

    Time frame: Up to day 180

  7. Cerebral function via cognitive testing before and after a switch in antiretroviral therapy to a dolutegravir containing regimen

    Time frame: Up to day 180

  8. Relationship between genetic polymorphisms and exposure to dolutegravir as measured by Peak plasma concentration (Cmax)

    The results of genetic polymorphisms testing indicating the presence or absence of certain polymorphisms coding for enzymes and transporters responsible for the metabolism of dolutegravir will be correlated with the PK parameter Peak plasma concentration (Cmax). This, for instance, can tell us if the presence of certain alleles makes an individual more likely to metabolise or clear dolutegravir faster or slower.

    Time frame: Day 1

  9. Relationship between genetic polymorphisms and exposure to dolutegravir as measured by trough concentration (Ctrough)

    The results of genetic polymorphisms testing indicating the presence or absence of certain polymorphisms coding for enzymes and transporters responsible for the metabolism of dolutegravir will be correlated with the PK parameter trough concentration (Ctrough). This, for instance, can tell us if the presence of certain alleles makes an individual more likely to metabolise or clear dolutegravir faster or slower.

    Time frame: Day 1

  10. Relationship between genetic polymorphisms and exposure to dolutegravir as measured by Area under the plasma concentration versus time curve (AUC)

    The results of genetic polymorphisms testing indicating the presence or absence of certain polymorphisms coding for enzymes and transporters responsible for the metabolism of dolutegravir will be correlated with the PK parameter Area under the plasma concentration versus time curve (AUC). This, for instance, can tell us if the presence of certain alleles makes an individual more likely to metabolise or clear dolutegravir faster or slower.

    Time frame: Day 1

07

Study locations

1 site
  • St Stephen's Centre, Chelsea & Westminster Hospital
    London, SW10 9NH, United Kingdom
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on Feb 28, 2018, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT02509195
Lead sponsor
St Stephens Aids Trust
Collaborators
ViiV Healthcare
Responsible party
Sponsor
First posted
Jul 27, 2015
Start date
Aug 4, 2015
Primary completion
Feb 13, 2017
Completion
Jul 24, 2017
Last update
Feb 28, 2018

Study contacts

Marta Boffito
principal investigator · St Stephen's AIDS Trust
View the source record on ClinicalTrials.gov ↗

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