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Hepatitis CPhase 1NCT00833378

Drug Interaction Study Between Eltrombopag and Lopinavir/Ritonavir in Healthy Adult Subjects.

A Phase 1 study testing Eltrombopag, Lopinavir/Ritonavir and Eltrombopag and Lopinavir/Ritonavir in people with Hepatitis C, run by GlaxoSmithKline at 1 site in United States.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

This is a Phase I, open-label, single sequence, crossover study to be conducted in healthy adult subjects. There will be a screening visit, three treatment periods, and a follow-up visit. In Period 1, subjects will receive a single dose of eltrombopag on Day 1, and PK sampling will occur for 72 hours. Read more about this study

Who is it for?
Ages 18 to 64 yearsHealthy volunteers can take part
Conditions the study is for
Hepatitis C
What is being tested?
Eltrombopag, Lopinavir/Ritonavir and Eltrombopag and Lopinavir/Ritonavir
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
40 participants
Where
1 siteUnited States
Study dates
19 Jan 2009to 11 Mar 2009
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 64 years
  • All sexes
  • Healthy volunteers accepted
  • Adult

Who may be able to join

  • Healthy subjects with no clinically significant abnormality identified by physician by evaluation of medical history, physical examination, clinical laboratory tests or electrocardiogram (ECG).
  • Able to swallow and retain oral medication.
  • Male and female subjects between the ages of 18 to 64 years of age inclusive, at the time of signing the informed consent.
  • Subject is able to understand and comply with the protocol requirements, instructions and restrictions.
  • Capable of giving written informed consent which includes compliance with the requirements and restrictions listed in the consent form. Signed informed consent must be on file prior to screening procedures.
  • Body weight ≥ 50kg (110 lbs) for men and ≥ 45 kg (99 lbs) for women and body mass index (BMI) of 18.5 to 29.9 kg/m2 inclusive.
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  • Male subjects, who are not surgically sterile, must agree on abstinence or to use a double barrier method, such as, a condom plus spermicidal agent (foam/gel/film/cream/suppository). This criterion must be followed from the time of the first dose of study medication until 14 days after the last dose of medication.-
  • A female subject is eligible to participate if she is neither pregnant nor lactating, and falls into one of the following categories:
  • non-childbearing potential including pre-menopausal females with documented (medical report verification) hysterectomy or bilateral oophorectomy, or postmenopausal females defined as being amenorrheic for greater than 1 year and having serum estradiol and follicle stimulating hormone levels consistent with menopause.
  • child-bearing potential with negative β human chorionic gonadotropin (βhCG) test and agrees to comply with recognized non-hormonal contraceptive methods from screening or at least two weeks prior to first dose (whichever is earlier) until the follow-up visit. Recognized non-hormonal contraceptive methods include: complete abstinence from intercourse, two forms of barrier contraception (e.g. condom with spermicide, or diaphragm with spermicide), or intrauterine device (IUD).

Who cannot join

  • History of Gilbert's syndrome.
  • Any previous history of deep vein thrombosis or any other thromboembolic event. 3. History of thrombocytopenia or bleeding due to abnormal platelet number or function. 4. Clotting factor abnormalities associated with hypercoagulability, specifically Factor V Leiden, Protein C or Protein S deficiency or antithrombin III deficiency. 5. Elevated blood pressure (BP) at screening (systolic >140 mm Hg, diastolic >85 mm Hg). If the subject's BP is elevated on the first measurement, complete two additional BP measurements 2 minutes apart and average the three assessments to evaluate this criteria. If averaged BP exceeds the safety criteria, the subject should be excluded.
  • 6. History of atrial fibrillation, mitral valve prolapse, significant heart murmur or vascular bruit. 7. Prolonged QTc interval (Bazett's) at screening (for females > 450 msec and for males > 430 msec). If the QTc interval is prolonged on the initial ECG, then complete two additional ECGs 5 minutes apart and take the average QTc measurements of all three ECGs to evaluate this criteria. If averaged QTc exceeds the safety criteria, the subject should be excluded. 8. Female subjects currently receiving hormone replacement therapy (HRT). 9. Positive for HIV, hepatitis B virus or hepatitis C virus assays at screening.
  • 10. Positive urine drug screen including alcohol at screening or pre-dose (Day -1).
  • 11. History of alcohol/drug abuse or dependence within 12 months of the study. RM2008/00650/00 CONFIDENTIAL TPL111716 25 CONFIDENTIAL RM2008/00650/00 TPL111716 26 12. History of alcohol consumption in the past six months exceeding 7 units/week for women and 14 units/week for men (where 1 unit = 5 ounces of wine or 12 ounces of beer or 1.5 ounces of hard liquor). 13. Urinary cotinine levels indicative of smoking at screening or pre-dose (Day -1).
  • History of regular use of tobacco- or nicotine-containing products within 6 months prior to screening. 14. Treatment with an investigational drug within 30 days or 5 half-lives (whichever is longer) preceding the first dose of study medication. 15. Exposure to more than four new chemical entities within 12 months prior to the first dosing day. 16. Use of prescription or non-prescription drugs (including aspirin and non-steroidal anti-inflammatory drugs [NSAIDs]), vitamins, herbal and dietary supplements within 7 days (or 14 days if the drug is a potential enzyme inducer, such as St. John's Wort) or 5 half-lives (whichever is longer) prior to the first dose of study medication, unless in the opinion of the investigator and sponsor the medication will not interfere with the study procedures or compromise subject safety. 17. Subjects who have donated plasma within 7 days prior to the screening visit or where participation in this study would result in donation of blood in excess of 500 mL within a 56-day period. 18. History of sensitivity to any of the study medications, or components thereof.

Trial locations and contacts

1 site in 1 country.

United States1 site
  • GSK Investigational Site

    Buffalo, New York, 14202

Other trials in United States

About this study

Official title: A Phase I, Open-label, Single Sequence, Crossover Study Evaluating the Safety and the Pharmacokinetics of Lopinavir/Ritonavir and Eltrombopag Given Alone and When Co-administered in Healthy Adult Subjects.

This is a Phase I, open-label, single sequence, crossover study to be conducted in healthy adult subjects. There will be a screening visit, three treatment periods, and a follow-up visit. In Period 1, subjects will receive a single dose of eltrombopag on Day 1, and PK sampling will occur for 72 hours. In Period 2, subjects will receive LPV/RTV for 14 days with PK sampling for 12 hours. In Period 3, subjects will receive a single dose of eltrombopag with LPV/RTV on Day 1 only with PK sampling for 72 hours. Subjects will return for a follow-up visit within 10 to 14 days of the last dose of study drugs.

Conditions
Hepatitis C
Being tested
Eltrombopag, Lopinavir/Ritonavir, Eltrombopag and Lopinavir/Ritonavir
Keywords
Drug interaction, SB-497115 (eltrombopag), Kaletra (Lopinavir, Ritonavir),thrombocytopenia, pharmacokinetics
Medical subject headings
Hepatitis C

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • EltrombopagDrug

    Eltrombopag 100 mg single oral dose

  • Lopinavir/RitonavirDrug

    Lopinavir/Ritonavir 400/100 mg oral dose given twice a day for 14 days

  • Eltrombopag and Lopinavir/RitonavirDrug

    Elrombopag 100 mg single oral dose and Lopinavir/Ritonavir 400/100 mg oral dose given in the AM and PM

Study groups in NCT00833378
Study groupRoleWhat they receive
Period 2Active comparatorTreatment B
Receives: Drug: Lopinavir/Ritonavir
Period 1Active comparatorTreatment A
Receives: Drug: Eltrombopag
Period 3Active comparatorTreatment C
Receives: Drug: Eltrombopag and Lopinavir/Ritonavir

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Pharmacokinetic parameters per the protocol

    Measured: sixteen days

Secondary outcomes (2)
  1. Safety parameters including vital signs, laboratory assessments, ECG measurements and adverse events reporting

    Measured: sixteen days of treatment and follow-up period.

  2. Pharmacokinetic parameters per the protocol

    Measured: sixteen days

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted2 Feb 2009 (estimated)
  2. Study start19 Jan 2009
  3. Primary completion11 Mar 2009
  4. Study completion11 Mar 2009

Resources

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
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
40 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00833378
Sponsor's protocol ID
111716
Status last verified
Nov 2017
First submitted
29 Jan 2009
Last updated
14 Nov 2017
Results posted
No

Publications

  • Wire MB, McLean HB, Pendry C, Theodore D, Park JW, Peng B. Assessment of the pharmacokinetic interaction between eltrombopag and lopinavir-ritonavir in healthy adult subjects. Antimicrob Agents Chemother. 2012 Jun;56(6):2846-51. doi: 10.1128/AAC.05214-11. Epub 2012 Mar 5.

    PubMed 22391553

Questions about this trial

What is this clinical trial studying?

A Phase 1 study testing Eltrombopag, Lopinavir/Ritonavir and Eltrombopag and Lopinavir/Ritonavir in people with Hepatitis C, run by GlaxoSmithKline 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 10 inclusion and 6 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 14 Nov 2017. 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?

Pharmacokinetic parameters per the protocol (time frame: sixteen days). 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 NCT00833378, 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 14 Nov 2017.

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