Infection, Human Immunodeficiency VirusPhase 1NCT01967771
Effect of Carbamazepine on Dolutegravir Pharmacokinetics in Healthy Adult Subjects
A Phase 1 study testing DTG and CBZ in people with Infection, Human Immunodeficiency Virus, run by ViiV Healthcare at 1 site in United States.
Trial summary
This study will be a phase I, open label, three period, fixed sequence crossover study to evaluate the effect of Carbamazepine (CBZ) on the steady-state pharmacokinetics of Dolutegravir (DTG) and on the safety and tolerability of DTG. Read more about this study
- Who is it for?
- Ages 18 to 65 yearsHealthy volunteers can take part
- Conditions the study is for
- Infection, Human Immunodeficiency Virus
- What is being tested?
- DTG and CBZ
- Type of treatment
- Pill or oral medicine
- Could I receive a placebo?
- No, everyone receives an active treatment
- How many people
- 16 participants
- Where
- 1 siteUnited States
- Study dates
- Oct 2013to Jan 2014
- Phase
- Phase 1
- Are there results?
- None posted in the registry
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 65 years
- All sexes
- Healthy volunteers accepted
- Adult, Older adult
Who may be able to join
- Healthy as determined by a responsible and experienced physician, based on a medical evaluation including [medical history, physical examination, laboratory tests and cardiac monitoring]. A subject with a clinical abnormality or laboratory parameter(s) which is/are not specifically listed in the inclusion or exclusion criteria, outside the reference range for the population being studied may be included only if the Investigator agrees and documents that the finding is unlikely to introduce additional risk factors and will not interfere with the study procedures.
- Male/females aged between 18 and 65 years of age inclusive, at the time of signing the informed consent.
- A female subject is eligible to participate if she is of: non-childbearing potential defined as pre-menopausal females with a documented tubal ligation, bilateral oophorectomy or hysterectomy [for this definition, "documented" refers to the outcome of the investigator's/designee's review of the subject's medical history for study eligibility, as obtained via a verbal interview with the subject or from the subject's medical records]; or postmenopausal defined as 12 months of spontaneous amenorrhea [in questionable cases a blood sample with simultaneous follicle stimulating hormone (FSH) >40 milli international units per milliliter (MIU/mL) and estradiol <40 picograms (pg)/mL (<147 picomole per liter (pmol/L) is confirmatory]; Child-bearing potential with negative pregnancy test as determined by [serum or urine] human chorionic gonadotropin (hCG) test at screening or prior to dosing AND Agrees to use one of the contraception methods for an appropriate period of time (as determined by the product label or investigator) prior to the start of dosing to sufficiently minimize the risk of pregnancy at that point. Female subjects must agree to use contraception until 5 days post-last dose. OR has only same-sex partners, when this is her preferred and usual lifestyle.
- Body weight >=50 kilograms (Kg) for males and >=45 Kg for females and body mass index (BMI) within the range 18.5 - 31.0 Kg/m^2 (square meters) (inclusive).
- Alanine aminotransferase, alkaline phosphatase and bilirubin <= 1.5x Upper Limit of Normal (ULN) (isolated bilirubin >1.5xULN is acceptable if bilirubin is fractionated and direct bilirubin <35%). A single repeat is allowed for eligibility determination.
- Based on single corrected QT interval (QTc) value: QT duration corrected for heart rate by Bazett's formula (QTcB) <450 millisecond (msec); or QTc <480 msec in subjects with Bundle Branch Block.
- A negative HLA-B*1502 allele screening assessment for subjects of Asian ethnicity only.
- Capable of giving written informed consent, which includes compliance with the requirements and restrictions listed in the consent form
Who cannot join
- A positive pre-study drug/alcohol screen.
- A positive test for human immunodeficiency virus (HIV) antibody.
- Pregnant females as determined by positive [serum or urine] hCG test at screening or prior to dosing.
- History of regular alcohol consumption within 6 months of the study defined as: an average weekly intake of >14 drinks for males or >7 drinks for females. One drink is equivalent to 12 g of alcohol: 12 ounces (360 mL) of beer, 5 ounces (150 mL) of wine or 1.5 ounces (45 mL) of 80 proof distilled spirits.
- History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy that, in the opinion of the investigator or GlaxoSmithKline (GSK) Medical Monitor, contraindicates their participation. Subjects will allergy to tricyclic antidepressants should not be enrolled.
- Where participation in the study would result in donation of blood or blood products in excess of 500 mL within a 56 day period.
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- The subject has participated in a clinical trial and has received an investigational product within the following time period prior to the first dosing day in the current study: 30 days, 5 half-lives or twice the duration of the biological effect of the investigational product (whichever is longer).
- Lactating females.
- The subject's systolic blood pressure is outside the range of 90-140 millimeters of mercury (mmHg), or diastolic pressure is outside the range of 45-90 mmHg, or heart rate is outside the range of 50-100 beats per minute (bpm) for female subjects or 45-100 bpm for male subjects. A single repeat is allowed for eligibility determination.
- Exclusion criteria for screening ECG (a single repeat is allowed for eligibility determination): Heart rate for males <45 and >110 bpm and females <50 and >100 bpm; PR interval <120 and >220 msec, QRS duration <70 and >120 msec, QTc interval (Bazett) >450 msec. Evidence of previous myocardial infarction (Does not include ST segment changes associated with repolarization); any clinically significant arrhythmia which, in the opinion of the investigator and GSK Medical Monitor, will interfere with the safety for the individual subject; any conduction abnormality (including but not specific to left or right incomplete bundle branch block, atrioventricular block [2nd degree or higher], Wolf Parkinson White [WPW] syndrome), sinus pauses>3 seconds, and non-sustained or sustained ventricular tachycardia (>=3 consecutive ventricular ectopic beats).
- Platelets, white blood cell count or hemoglobin below the lower limit of normal. A single repeat is allowed for eligibility determination.
- A positive pre-study Hepatitis B surface antigen or positive Hepatitis C antibody result within 3 months of screening
- Current or chronic history of liver disease, or known hepatic or biliary abnormalities (with the exception of Gilbert's syndrome or asymptomatic gallstones).
- History of suicide ideation or severe depression.
- History of hepatic porphyria (e.g., acute intermittent porphyria, variegate porphyria, porphyria cutanea tarda.
- History of previous bone marrow depression (e.g., prior viral or drug related bone marrow depression)
- Unable to refrain from the use of prescription or non-prescription drugs, including vitamins, herbal and dietary supplements (including St. John's Wort) within 7 days (or 14 days if the drug is a potential enzyme inducer) or 5 half-lives (whichever is longer) prior to the first dose of study medication, unless in the opinion of the investigator and GSK Medical Monitor the medication will not interfere with the study procedures or compromise subject safety.
- Unwillingness or inability to follow the procedures outlines in the protocol.
Trial locations and contacts
1 site in 1 country.
United States1 site
GSK Investigational Site
Overland Park, Kansas, 66211
About this study
Official title: A Phase I, Open Label, Randomized, Three Period, Fixed Sequence Crossover Study to Evaluate the Effect of Carbamazepine on Dolutegravir Pharmacokinetics in Healthy Adult Subjects (200901)
This study will be a phase I, open label, three period, fixed sequence crossover study to evaluate the effect of Carbamazepine (CBZ) on the steady-state pharmacokinetics of Dolutegravir (DTG) and on the safety and tolerability of DTG. Subjects will have a screening visit within 30 days prior to the first dose of study drug, three treatment periods, and a follow-up visit 7-14 days after the last dose of study drug. There is no washout between treatment periods.
- Conditions
- Infection, Human Immunodeficiency Virus
- Being tested
- DTG, CBZ
- Keywords
- healthy volunteers, drug interaction, carbamazepine, Dolutegravir, pharmacokinetics
- Medical subject headings
- Infections, Acquired Immunodeficiency Syndrome
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
DTGDrug
DTG will be supplied as 50 mg tablet to be administered orally
CBZDrug
CBZ will be supplied as 100 mg and 200 mg extended release tablet to be administered orally
| Study group | Role | What they receive |
|---|---|---|
| DTG/CBZ | Experimental | All subjects will be assigned to a single-sequence of three treatment periods without washout. Subjects will receive DTG 50 mg once daily (OD) for 5 days (Period 1), followed by CBZ 100 mg twice daily (BID) for 3 days (days 1-3 of Period 2), CBZ 200 mg BID for 3 days (days 4-6 of Period 2), CBZ 300mg BID for 10 days (days 7-16 of Period 2), followed by DTG 50 mg OD in combination with CBZ 300mg BID for 5 days (Period 3). Receives: Drug: DTG; Drug: CBZ |
What is being measured
The primary outcome is the main question the study is designed to answer.
Steady state plasma DTG pharmacokinetics (PK) parameters
PK parameters will include: Steady state plasma DTG concentration at the end of the dosing interval (Ctau), maximum concentration (Cmax), area under the time-concentration curve over the dosing interval [AUC(0-tau)], apparent clearance following oral dosing (CL/F), terminal phase half life (t1/2), concentration at time zero (C0) and minimum concentration (Cmin)
Measured: Day 5 and Day 26
Secondary outcomes (4)
Change from baseline in 12-lead electrocardiogram (ECG)
Single 12-lead ECGs will be obtained at each timepoint
Measured: Up to 40 days
Change from baseline in vital signs
Vital signs will include systolic and diastolic blood pressure and pulse rate
Measured: Up to 40 days
Number of subjects with adverse events (AEs)
AEs will be assessed throughout the study
Measured: Up to 40 days
Toxicity grading of clinical laboratory tests
Laboratory assessments will include haematology, clinical chemistry and urinalysis parameters
Measured: Up to 40 days
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted23 Oct 2013 (estimated)
- Study startOct 2013
- Primary completionJan 2014
- Study completionJan 2014
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Publications (1)Papers the sponsor has linked to this study.
- Other trials for Infection, Human Immunodeficiency VirusStudies of the same condition, open and under way.
- More trials run by ViiV HealthcareThe sponsor's other registered studies.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Interventional
- Phase
- Phase 1
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Enrolment
- 16 participants (actual)
Sponsor and investigators
- Lead sponsor
- ViiV Healthcare
- Sponsor type
- Industry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Responsible party
- Sponsor
- Investigators
- GSK Clinical Trials, Study director, ViiV Healthcare
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT01967771
- Sponsor's protocol ID
- 200901
- Status last verified
- Jan 2014
- First submitted
- 4 Oct 2013
- Last updated
- 27 Jan 2014
- Results posted
- No
- Data monitoring committee
- No
Publications
Song I, Weller S, Patel J, Borland J, Wynne B, Choukour M, Jerva F, Piscitelli S. Effect of carbamazepine on dolutegravir pharmacokinetics and dosing recommendation. Eur J Clin Pharmacol. 2016 Jun;72(6):665-70. doi: 10.1007/s00228-016-2020-6. Epub 2016 Feb 22.
PubMed 26898568
Study at a glance
From the registry record, last updated by the sponsor on 27 Jan 2014. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- A Phase I, Open Label, Randomized, Three Period, Fixed Sequence Crossover Study to Evaluate the Effect of Carbamazepine on Dolutegravir Pharmacokinetics in Healthy Adult Subjects (200901)
- ClinicalTrials.gov ID
- NCT01967771
- Acronym / sponsor ID
- 200901
- Conditions
- Infection, Human Immunodeficiency Virus
- Keywords
- healthy volunteers, drug interaction, carbamazepine, Dolutegravir, pharmacokinetics
- Phase
- Phase 1
- Study type
- Interventional
- Recruitment status
- Completed
- Enrolment
- 16 participants (actual)
- Lead sponsor
- ViiV HealthcareIndustry (pharma, biotech, devices)
- Collaborators
- GlaxoSmithKline
- Study start
- Oct 2013
- Primary completion
- Jan 2014 (actual)
- Study completion
- Jan 2014 (actual)
- First posted
- 23 Oct 2013 (estimated)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This study will be a phase I, open label, three period, fixed sequence crossover study to evaluate the effect of Carbamazepine (CBZ) on the steady-state pharmacokinetics of Dolutegravir (DTG) and on the safety and tolerability of DTG. Subjects will have a screening visit within 30 days prior to the first dose of study drug, three treatment periods, and a follow-up visit 7-14 days after the last dose of study drug. There is no washout between treatment periods.
Study design
- Allocation
- Not applicable
- Intervention model
- Single group
- Masking
- None (open label)
- Number of arms
- 1
| Arm | Type | Receives |
|---|---|---|
| DTG/CBZ | Experimental | Drug: DTG, Drug: CBZAll subjects will be assigned to a single-sequence of three treatment periods without washout. Subjects will receive DTG 50 mg once daily (OD) for 5 days (Period 1), followed by CBZ 100 mg twice daily (BID) for 3 days (days 1-3 of Period 2), CBZ 200 mg BID for 3 days (days 4-6 of Period 2), CBZ 300mg BID for 10 days (days 7-16 of Period 2), followed by DTG 50 mg OD in combination with CBZ 300mg BID for 5 days (Period 3). |
Who may qualify
- Ages
- 18 to 65 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult, Older adult
Key inclusion criteria (8 listed)
- Healthy as determined by a responsible and experienced physician, based on a medical evaluation including [medical history, physical examination, laboratory tests and cardiac monitoring]. A subject with a clinical abnormality or laboratory parameter(s) which is/are not specifically listed in the inclusion or exclusion criteria, outside the reference range for the population being studied may be included only if the Investigator agrees and documents that the finding is unlikely to introduce additional risk factors and will not interfere with the study procedures.
- Male/females aged between 18 and 65 years of age inclusive, at the time of signing the informed consent.
- A female subject is eligible to participate if she is of: non-childbearing potential defined as pre-menopausal females with a documented tubal ligation, bilateral oophorectomy or hysterectomy [for this definition, "documented" refers to the outcome of the investigator's/designee's review of the subject's medical history for study eligibility, as obtained via a verbal interview with the subject or from the subject's medical records]; or postmenopausal defined as 12 months of spontaneous amenorrhea [in questionable cases a blood sample with simultaneous follicle stimulating hormone (FSH) >40 milli international units per milliliter (MIU/mL) and estradiol <40 picograms (pg)/mL (<147 picomole per liter (pmol/L) is confirmatory]; Child-bearing potential with negative pregnancy test as determined by [serum or urine] human chorionic gonadotropin (hCG) test at screening or prior to dosing AND Agrees to use one of the contraception methods for an appropriate period of time (as determined by the product label or investigator) prior to the start of dosing to sufficiently minimize the risk of pregnancy at that point. Female subjects must agree to use contraception until 5 days post-last dose. OR has only same-sex partners, when this is her preferred and usual lifestyle.
- Body weight >=50 kilograms (Kg) for males and >=45 Kg for females and body mass index (BMI) within the range 18.5 - 31.0 Kg/m^2 (square meters) (inclusive).
- Alanine aminotransferase, alkaline phosphatase and bilirubin <= 1.5x Upper Limit of Normal (ULN) (isolated bilirubin >1.5xULN is acceptable if bilirubin is fractionated and direct bilirubin <35%). A single repeat is allowed for eligibility determination.
Key exclusion criteria (18 listed)
- A positive pre-study drug/alcohol screen.
- A positive test for human immunodeficiency virus (HIV) antibody.
- Pregnant females as determined by positive [serum or urine] hCG test at screening or prior to dosing.
- History of regular alcohol consumption within 6 months of the study defined as: an average weekly intake of >14 drinks for males or >7 drinks for females. One drink is equivalent to 12 g of alcohol: 12 ounces (360 mL) of beer, 5 ounces (150 mL) of wine or 1.5 ounces (45 mL) of 80 proof distilled spirits.
- History of sensitivity to any of the study medications, or components thereof or a history of drug or other allergy that, in the opinion of the investigator or GlaxoSmithKline (GSK) Medical Monitor, contraindicates their participation. Subjects will allergy to tricyclic antidepressants should not be enrolled.
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| DTGDTG will be supplied as 50 mg tablet to be administered orally | Drug | DTG/CBZ |
| CBZCBZ will be supplied as 100 mg and 200 mg extended release tablet to be administered orally | Drug | DTG/CBZ |
Primary outcome
Steady state plasma DTG pharmacokinetics (PK) parameters
Time frame: Day 5 and Day 26
PK parameters will include: Steady state plasma DTG concentration at the end of the dosing interval (Ctau), maximum concentration (Cmax), area under the time-concentration curve over the dosing interval [AUC(0-tau)], apparent clearance following oral dosing (CL/F), terminal phase half life (t1/2), concentration at time zero (C0) and minimum concentration (Cmin)
4 secondary outcomes
Change from baseline in 12-lead electrocardiogram (ECG)
Time frame: Up to 40 days
Change from baseline in vital signs
Time frame: Up to 40 days
Number of subjects with adverse events (AEs)
Time frame: Up to 40 days
Toxicity grading of clinical laboratory tests
Time frame: Up to 40 days
Results and safety
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 27 Jan 2014.
- Derived from this study: PubMed 26898568Song I, Weller S, Patel J, Borland J, Wynne B, Choukour M, Jerva F, Piscitelli S. Effect of carbamazepine on dolutegravir pharmacokinetics and dosing recommendation. Eur J Clin Pharmacol. 2016 Jun;72(6):665-70. doi: 10.1007/s00228-016-2020-6. Epub 2016 Feb 22.
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part. This study is not recruiting at the moment.
GSK Clinical Trials study director
ViiV Healthcare
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
A Phase 1 study testing DTG and CBZ in people with Infection, Human Immunodeficiency Virus, run by ViiV Healthcare at 1 site in United States.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 8 inclusion and 18 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: finished, as of the sponsor's last update on 27 Jan 2014. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in United States. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
What does this phase mean?
Phase 1 studies test a treatment in a small group of people for the first time or in a new way, mainly to check safety and find the right dose.
Not every study follows the same path, and some studies (observational studies, device studies) have no phase.
Are results available for this study?
The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.
How can a doctor refer a patient or contact the research team?
The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Steady state plasma DTG pharmacokinetics (PK) parameters (time frame: Day 5 and Day 26). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
On the ClinicalTrials.gov record for NCT01967771, which also lists 1 linked publication.
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 27 Jan 2014; AzTrials last refreshed its copy on 8 Nov 2026.