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Hepatitis CPhase 3ENABLE-ALLNCT00996216

Clinical Trial for Non-responders Who Previously Participated in Eltrombopag Studies TPL 103922 or TPL 108390

A Phase 3 study testing Eltrombopag and Antiviral therapy in people with Hepatitis C, run by GlaxoSmithKline at 28 sites in 9 countries.

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

The purpose of this study is to test the safety and tolerability of eltrombopag when used to increase and maintain platelet count. Platelet count to be maintained at a level sufficient to facilitate initiation of antiviral therapy, to minimize antiviral therapy dose reductions, and to avoid permanent discontinuation… Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Hepatitis C
What is being tested?
Eltrombopag and Antiviral therapy
Could I receive a placebo?
No, everyone receives an active treatment
How many people
27 participants
Where
28 sitesin 9 countries
Study dates
Sep 2009to Feb 2013
Phase
Phase 3
Are there results?
Yes, posted in the registrySummary in the doctors' view

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 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Prior participation in protocol TPL103922 or TPL108390 and completed the Week 24 Follow Up Visit in TPL103922 or TPL108390
  • Male or female ≥18 years old
  • Evidence of chronic HCV infection
  • While participating in TPL103922 or TPL108390, discontinued from study drug due to thrombocytopenia
  • Appropriate candidate for antiviral therapy with pegylated interferon plus ribavirin
  • Platelet count <75,000
Show all 9Show fewer
  • Fertile males and females must use two forms of effective contraception during treatment and for 24 weeks after treatment
  • Ability to understand and comply with the protocol requirements and instructions
  • Ability to provide written informed consent

Who cannot join

  • Decompensated liver disease
  • Known hypersensitivity, intolerance, or allergy to interferon, ribavirin, eltrombopag, or their ingredients
  • History of clinically significant bleeding from oesophageal or gastric varices
  • History of arterial or venous thrombosis and two or more of the following risk factors: hereditary thrombophilic disorders; hormone replacement therapy; systemic contraception (containing estrogen); smoking; diabetes; hypercholesterolemia; medication for hypertension or cancer
  • Pre-existing cardiac disease (congestive heart failure Grade III/IV) or arrhythmias known to involve the risk of thromboembolic events (e.g. atrial fibrillation)
  • Evidence of hepatocellular carcinoma
Show all 15Show fewer
  • HIV or Hepatitis B infection
  • Therapy with anti-neoplastic or immunomodulatory treatment within six months prior to eltrombopag therapy
  • Malignancy diagnosed or treated within the past five years. Except for localized basal or squamous cell carcinoma treated by local excision or malignancies that were adequately treated and, in the opinion of the oncologist, have an excellent chance of cancer-free survival.
  • Pregnant or nursing women
  • Men with a female partner who is pregnant
  • History of alcohol/drug abuse or dependence within six months of the study start unless participating in a controlled rehabilitation programme.
  • Treatment with an investigational drug or interferon within 30 days or 5 half-lives (whichever is longer) of the screening visit
  • History or platelet clumping that prevents reliable measurement of platelet counts
  • Evidence of portal vein thrombosis within three months of baseline visit

Trial locations and contacts

28 sites in 9 countries.

28 sites in 9 countries

United States6 sites
  • GSK Investigational Site

    Honolulu, Hawaii, 96817

  • GSK Investigational Site

    Manhasset, New York, 11030

  • GSK Investigational Site

    Nashville, Tennessee, 37212

  • GSK Investigational Site

    New Haven, Connecticut, 06520

  • GSK Investigational Site

    San Diego, California, 92123

  • GSK Investigational Site

    Seattle, Washington, 98111

Other trials in United States

Germany5 sites
  • GSK Investigational Site

    Berlin, State of Berlin, 10969

  • GSK Investigational Site

    Düsseldorf, North Rhine-Westphalia, 40225

  • GSK Investigational Site

    Freiburg im Breisgau, Baden-Wurttemberg, 79106

  • GSK Investigational Site

    Munich, Bavaria, 81675

  • GSK Investigational Site

    Ulm, Baden-Wurttemberg, 89081

Other trials in Germany

Spain4 sites
  • GSK Investigational Site

    A Coruña, 15006

  • GSK Investigational Site

    Madrid, 28029

  • GSK Investigational Site

    Pontevedra, 36071

  • GSK Investigational Site

    Valencia, 46010

Other trials in Spain

Australia3 sites
  • GSK Investigational Site

    Camperdown, New South Wales, 2050

  • GSK Investigational Site

    Herston, Queensland, 4029

  • GSK Investigational Site

    Randwick, New South Wales, 2031

Other trials in Australia

France3 sites
  • GSK Investigational Site

    Marseille, 13285

  • GSK Investigational Site

    Nice, 06202

  • GSK Investigational Site

    Pessac, 33604

Other trials in France

Italy3 sites
  • GSK Investigational Site

    Bologna, Emilia-Romagna, 40138

  • GSK Investigational Site

    Genoa, Liguria, 16132

  • GSK Investigational Site

    Milan, Lombardy, 20157

Other trials in Italy

Canada2 sites
  • GSK Investigational Site

    Montreal, Quebec, H2X 3J4

  • GSK Investigational Site

    Toronto, Ontario, M5G 2N2

Other trials in Canada

Greece1 site
  • GSK Investigational Site

    Athens, 10676

Other trials in Greece

Pakistan1 site
  • GSK Investigational Site

    Lahore, 54600

Other trials in Pakistan

About this study

Official title: An Open-label, Multi-centre Rollover Study to Assess the Safety and Efficacy of Eltrombopag in Thrombocytopenic Subjects With Hepatitis C Virus (HCV) Infection Who Are Otherwise Eligible to Initiate Antiviral Therapy (Peginterferon Alfa-2a or Peginterferon Alfa-2b Plus Ribavirin)

The purpose of this study is to test the safety and tolerability of eltrombopag when used to increase and maintain platelet count. Platelet count to be maintained at a level sufficient to facilitate initiation of antiviral therapy, to minimize antiviral therapy dose reductions, and to avoid permanent discontinuation of antiviral therapy.

Conditions
Hepatitis C
Being tested
Eltrombopag, Antiviral therapy
Keywords
Peginterferon, Platelets, Ribavirin, Hepatitis C-related thrombocytopenia, Thrombocytopenia, Hepatitis C, Thrombopoietin
Medical subject headings
Hepatitis C, Thrombocytopenia, Jacobs syndrome

What participants receive

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

  • EltrombopagDrug

    Also called Promacta

    Eltrombopag starting at 25 mg dose and titrated in Part 1 of study to 50, 75, 100 mg. Platelet count must reach sufficient level to allow initiation of antiviral therapy. Eltrombopag dose may be adjusted during antiviral treatment phase of study to maintain platelet count to continue antiviral therapy without adjustment to antiviral dose.

  • Antiviral therapyDrug

    Combination of either peginterferon alfa-2a or alfa-2b with ribavirin at investigator's discretion.

Study groups in NCT00996216
Study groupRoleWhat they receive
Open-label eltrombopagExperimentalOpen-label eltrombopag with dose titrations to support adequate platelet counts.
Receives: Drug: Eltrombopag; Drug: Antiviral therapy

What is being measured

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

  1. Number of Participants With Any Adverse Event (AE) and Any Serious Adverse Event (SAE) in Part 1

    An AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, may jeopardize the participant or require medical or surgical intervention to prevent one of the other outcomes listed, or is an event of possible drug-induced liver injury. Refer to the general AE/SAE module for a list of AEs and SAEs.

    Measured: From the start of investigational product up to the start of antiviral therapy (up to 9 weeks; median of 21 days)

  2. Number of Participants With Any AE and Any SAE in Part 2

    An AE is defined as any untoward medical occurrence in a participant or clinical investigation participant, temporally associated with the use of a medicinal product, whether or not considered related to the medicinal product. An AE can therefore be any unfavorable and unintended sign (including an abnormal laboratory finding), symptom, or disease (new or exacerbated) temporally associated with the use of a medicinal product. An SAE is defined as any untoward medical occurrence that, at any dose, results in death, is life threatening, requires hospitalization or prolongation of existing hospitalization, results in disability/incapacity, is a congenital anomaly/birth defect, may jeopardize the participant or require medical or surgical intervention to prevent one of the other outcomes listed, or is an event of possible drug-induced liver injury. Refer to the general AE/SAE module for a list of AEs and SAEs.

    Measured: From the date of initiation of antiviral therapy (Antiviral Baseline Visit [between Study Day 14 and Study Day 65]) to the completion of the follow-up period (up to Week 96/WD)

  3. Number of Participants With the Indicated Worst-case Division of Acquired Immune Deficiency Syndrome (DAIDS) Grade Increases From Screening for the Indicated Clinical Chemistry Parameters During Part 1

    Blood samples were collected for the measurement of clinical chemistry parameters. The DAIDS grades are utilized for measuring the severity of AEs. Grade 1, mild; Grade 2, moderate; Grade 3, severe; Grade 4, potentially life threatening.

    Measured: From Screening up to the start of antiviral therapy (up to 9 weeks; median of 21 days)

  4. Number of Participants With the Indicated Worst-case DAIDS Grade Increases From the Antiviral Baseline Visit for the Indicated Clinical Chemistry Parameter During Part 2

    Blood samples were collected for the measurement of clinical chemistry parameters. The DAIDS grades are utilized for measuring the severity of AEs. Grade 1, mild; Grade 2, moderate; Grade 3, severe; Grade 4, potentially life threatening.

    Measured: From Day 0 of Part 2 (Antiviral Baseline Visit [between Study Day 14 and Study Day 65) to the completion of the follow-up period (up to Week 96/WD)

  5. Number of Participants With the Indicated Worst-case DAIDS Grade Increases From Screening for the Indicated Hematology Parameters During Part 1

    Blood samples were collected for the measurement of hematology parameters. The DAIDS grades are utilized for measuring the severity of AEs. Grade 1, mild; Grade 2, moderate; Grade 3, severe; Grade 4, potentially life threatening.

    Measured: From Screening up to the start of antiviral therapy (up to 9 weeks; median of 21 days)

  6. Number of Participants With the Indicated Worst-case DAIDS Grade Increases From the Antiviral Baseline Visit for the Indicated Hematology Parameters During Part 2

    Blood samples were collected for the measurement of hematology chemistry parameters. The DAIDS grades are utilized for measuring the severity of AEs. Grade 1, mild; Grade 2, moderate; Grade 3, severe; Grade 4, potentially life threatening.

    Measured: From Day 0 of Part 2 (Antiviral Baseline Visit [between Study Day 14 and Study Day 65) to the completion of the follow-up period (up to Week 96/WD)

  7. Number of Participants With a Decrease in Visual Acuity During Parts 1 and 2

    Visual acuity (VA) is defined as acuteness or clearness of vision.

    Measured: From the start of investigational product up to the 24-week follow-up visit after the last dose in Part 2 or early withdrawal (up to 96 weeks)

  8. Number of Participants With the Indicated Change in logMAR Scale Values During Parts 1 and 2

    LogMAR (logarithm of the minimum angle of resolution) charts are used to measure an individual's visual acuity. LogMAR, expressed as the (decadic) logarithm of the minimum angle of resolution (range from +1.00 to -0.30), converts the geometric sequence of a traditional chart to a linear scale. As there are 5 letters per line, the total score for a line on the LogMAR chart represents a change of 0.1 log units.

    Measured: From the start of investigational product up to the 24-week follow-up visit after the last dose in Part 2 or early withdrawal (up to 96 weeks)

  9. Number of Participants With a logMAR Change >=0.15 During Parts 1 and 2

    LogMAR (logarithm of the minimum angle of resolution) charts are used to measure an individual's visual acuity. LogMAR, expressed as the (decadic) logarithm of the minimum angle of resolution (range from +1.00 to -0.30), converts the geometric sequence of a traditional chart to a linear scale. As there are 5 letters per line, the total score for a line on the LogMAR chart represents a change of 0.1 log units.

    Measured: From the start of investigational product up to the 24-week follow-up visit after the last dose in Part 2 or early withdrawal (up to 96 weeks)

Secondary outcomes (3)
  1. Platelet Counts at the Indicated Time Points

    Blood samples were collected for the measurement of platelet count. For each participant, the duration of Part 1 treatment varies between 2 and 9 weeks.

    Measured: From the start of investigational product up to the 24-week follow-up visit after the last dose in Part 2 or early withdrawal (up to 96 weeks)

  2. Number of Particpants Who Initiated Antiviral Therapy

    The number of participants who completed the Pre-antiviral Phase (Part 1) and proceeded to the Antiviral Phase (Part 2) are summarized.

    Measured: From the start of the investigational product up to 9 weeks (median of 21 days)

  3. Number of Participants Achieving Antiviral Treatment Milestones of Sustained Virological Response (SVR), Rapid Virological Response (RVR), Early Virological Response (EVR), and End of Treatment Response (ETR)

    SVR is defined as non-detectable Hepatitis C virus (HCV) ribonucleic acid (RNA) at 24 weeks post-completion of the planned treatment period (i.e., Week 48 or 72 for genotype 2/3 or Week 72 for non-genotype 2/3). RVR is defined as undetectable HCV RNA after 4 weeks of antiviral treatment. EVR is defined as clinically significant reduction in HCV RNA (>=2 log10 drop or undetectable) after 12 weeks of antiviral treatment. ETR is defined as undetectable HCV RNA at the end of antiviral treatment.

    Measured: From the start of investigational product in Part 2 up to the 24-week follow-up visit after the last dose in Part 2 or early withdrawal (up to 96 weeks)

Timeline

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

  1. First posted16 Oct 2009 (estimated)
  2. Study startSep 2009
  3. Primary completionFeb 2013
  4. Study completionFeb 2013

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 3
Primary purpose
Treatment
Allocation
Non-randomised
Intervention model
Single group
Masking
None (open label)
Enrolment
27 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT00996216
Sponsor's protocol ID
108392
Acronym
ENABLE-ALL
Status last verified
Aug 2013
First submitted
1 Oct 2009
Last updated
6 Dec 2013
Data monitoring committee
No

Questions about this trial

What is this clinical trial studying?

A Phase 3 study testing Eltrombopag and Antiviral therapy in people with Hepatitis C, run by GlaxoSmithKline at 28 sites in 9 countries.

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 9 inclusion and 15 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 6 Dec 2013. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 28 sites in United States, Germany, Spain, Australia, France and 4 more countries. 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 3 studies compare the treatment with the current standard treatment or a placebo in a large group, to confirm how well it works and watch for side effects.

Not every study follows the same path, and some studies (observational studies, device studies) have no phase.

Are results available for this study?

Yes. Results are posted in the registry (first posted 6 Dec 2013). A summary is in the For doctors view, and the full results are on ClinicalTrials.gov.

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?

Number of Participants With Any Adverse Event (AE) and Any Serious Adverse Event (SAE) in Part 1 (time frame: From the start of investigational product up to the start of antiviral therapy (up to 9 weeks; median of 21 days)). The study lists 9 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?
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 6 Dec 2013.

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