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Chronic Hepatitis C VirusPhase 2NCT01852604

Samatasvir (IDX719) in Combinations With Simeprevir and/or TMC647055/Ritonavir With or Without Ribavirin for 12 Weeks in Participants With Chronic Hepatitis C Infection (MK-1894-005)

A Phase 2 study testing Samatasvir, Simeprevir and Ribavirin (RBV) in people with Chronic Hepatitis C Virus, run by Merck Sharp & Dohme LLC.

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

Parts A and B of this study are designed to evaluate the safety, tolerability, efficacy and pharmacokinetic profiles of samatasvir and simeprevir when administered in combination with ribavirin (RBV) for 12 weeks in treatment-naïve, Genotype (GT) 1b, 4 and 6 hepatitic C virus (HCV)-infected participants. Read more about this study

Who is it for?
Ages 18 to 65 years
Conditions the study is for
Chronic Hepatitis C Virus
What is being tested?
Samatasvir, Simeprevir and Ribavirin (RBV)
Could I receive a placebo?
Yes, some participants may receive a placebo
How many people
143 participants
Where
No sites listed yet
Study dates
Mar 2013to Apr 2015
Phase
Phase 2
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
  • No healthy volunteers
  • Adult, Older adult

Who may be able to join

  • Must have Genotype 1a, 1b, 4 or 6 HCV infection.
  • Documented clinical history compatible with chronic hepatitis C
  • HCV treatment-naïve or interferon/RBV-treatment relapsed (Part C)
  • Must agree to use an acceptable double method of birth control (one of which must be a barrier method) for at least 6 months after the last dose of study drugs.

Who cannot join

  • Female participants who are pregnant or breastfeeding.
  • Body Mass Index (BMI) > 36 kg/m2.
  • Co-infected with hepatitis B virus or human immunodeficiency virus (HIV).
  • History of hepatocellular carcinoma (HCC) or findings suggestive of possible HCC.
  • History or signs of decompensated liver disease: ascites, variceal bleeding, hepatic encephalopathy, spontaneous bacterial peritonitis, or other clinical signs of portal hypertension or hepatic insufficiency.
  • Has one or more known primary or secondary causes of liver disease, other than hepatitis C
  • History of, or active, acute or chronic, liver or biliary injury due to drugs, toxins, non-HCV viral hepatitis, gallstones or other etiologies
  • Donated blood or had significant blood loss 30 days prior to dosing

About this study

Official title: A Randomized Study to Evaluate the Safety and Efficacy of IDX719 in Combinations With Simeprevir and/or TMC647055/Ritonavir With or Without Ribavirin for 12 Weeks in Subjects With Chronic Hepatitis C Infection

Parts A and B of this study are designed to evaluate the safety, tolerability, efficacy and pharmacokinetic profiles of samatasvir and simeprevir when administered in combination with ribavirin (RBV) for 12 weeks in treatment-naïve, Genotype (GT) 1b, 4 and 6 hepatitic C virus (HCV)-infected participants.

Part C of this study is designed to evaluate the safety, tolerability, efficacy and pharmacokinetic profiles of samatasvir, simeprevir, TMC647055 and ritonavir (RTV) when administered in combination with or without RBV for 12 weeks in treatment-naïve or interferon/RBV-treatment relapsed, GT 1a and 1b HCV-infected participants.

Read the detailed description

Part A of this study is randomized and double-blind. Parts B and C are randomized and open-label.

Being tested
Samatasvir, Simeprevir, Ribavirin (RBV), TMC647055, Ritonavir (RTV)
Keywords
HCV, Hepatitis C, chronic hepatitis C, antiviral
Medical subject headings
Hepatitis C, Chronic, Hepatitis C

What participants receive

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

  • SamatasvirDrug

    Samatasvir (IDX719) will be supplied as 25 mg and 50 mg oral tablets.

  • SimeprevirDrug

    Simeprevir will be supplied as 75 and 150 mg oral capsules.

  • Ribavirin (RBV)Drug

    Ribavirin will be supplied as 200 mg oral tablets. Participants in the RBV-free arms experiencing non-response or virologic breakthrough during the treatment period will be offered RBV dosed according to the product label as an add-on to the participant's randomized treatment assignment.

  • TMC647055Drug

    TMC647055 will be supplied as 150 mg oral capsules.

  • Ritonavir (RTV)Drug

    Ritonavir will be supplied as 80 mg/mL oral solution.

  • Pegylated interferon (Peg-IFN)Biological

    Participants experiencing non-response or virologic breakthrough during the treatment period will be offered Peg-IFN (subcutaneous injection) dosed according to the product label as an add-on to the participant's randomized treatment assignment.

  • Samatasvir matching placeboOther

    Samatasvir matching placebo will be supplied for the 50 mg tablets used in Part A.

Study groups in NCT01852604
Study groupRoleWhat they receive
Part A: GT 1b, 4 - samatasvir 50/simeprevir/RBVExperimentalPart A: Participants with genotype 1b or 4 received samatasvir 50 mg and samatasvir matching placebo once daily, plus simeprevir 150 mg capsule once daily, plus RBV (dosing weight-based, according to product label) twice daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Biological: Pegylated interferon (Peg-IFN); Other: Samatasvir matching placebo
Part A: GT 1b, 4 - samatasvir 100/simeprevir/RBVExperimentalPart A: Participants with genotype 1b or 4 received samatasvir 100 mg and samatasvir matching placebo once daily, plus simeprevir 150 mg capsule once daily, plus RBV (dosing weight-based, according to product label) twice daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Biological: Pegylated interferon (Peg-IFN); Other: Samatasvir matching placebo
Part A: GT 1b, 4 - samatasvir 150/simeprevir/RBVExperimentalPart A: Participants with genotype 1b or 4 received samatasvir 150 mg once daily, plus simeprevir 150 mg capsule once daily, plus RBV (dosing weight-based, according to product label) twice daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Biological: Pegylated interferon (Peg-IFN)
Part B: GT 1b, 4 - samatasvir 25/simeprevir/RBVExperimentalPart B: Participants with genotype 1b or 4 received samatasvir 25 mg once daily, plus simeprevir 150 mg capsule once daily, plus RBV (dosing weight-based, according to product label) twice daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Biological: Pegylated interferon (Peg-IFN)
Part B: GT 1b, 4 - samatasvir 100/simeprevir/RBVExperimentalPart B: Participants with genotype 1b or 4 received samatasvir 100 mg once daily, plus simeprevir 150 mg capsule once daily, plus RBV (dosing weight-based, according to product label) twice daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Biological: Pegylated interferon (Peg-IFN)
Part B: GT 6 - samatasvir 100/simeprevir/RBVExperimentalPart B: Participants with Genotype 6 received samatasvir 100 mg once daily, plus simeprevir 150 mg capsule once daily, plus RBV (dosing weight-based, according to product label) twice daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Biological: Pegylated interferon (Peg-IFN)
Part C: GT 1a, 1b - samatasvir 50/simeprevir/TCM647055/RTVExperimentalPart C: Participants with Genotype 1a or 1b received samatasvir 50 mg once daily, plus simeprevir 75 mg capsule once daily, plus TMC647055 450 mg once daily plus RTV 30 mg once daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Drug: TMC647055; Drug: Ritonavir (RTV); Biological: Pegylated interferon (Peg-IFN)
Part C: GT 1a, 1b - samatasvir 50/simeprivir/TCM647055/RTV/RBVExperimentalPart C: Participants with Genotype 1a or 1b received samatasvir 50 mg once daily, plus simeprevir 75 mg capsule once daily, plus TMC647055 450 mg once daily, plus RTV 30 mg once daily, plus RBV (dosing weight-based, according to product label) twice daily for 12 weeks
Receives: Drug: Samatasvir; Drug: Simeprevir; Drug: Ribavirin (RBV); Drug: TMC647055; Drug: Ritonavir (RTV); Biological: Pegylated interferon (Peg-IFN)

What is being measured

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

  1. Percentage of participants who experienced an adverse event (AE)

    Measured: Up to approximately 95 weeks

  2. Percentage of participants who experienced a serious adverse event (SAE)

    Measured: Up to approximately 95 weeks

  3. Percentage of participants who experienced a Grade 1-4 laboratory abnormality

    Measured: Up to 66 weeks

  4. Percentage of participants who experienced sustained virologic response 4 weeks after the end of treatment (SVR4)

    Measured: Up to 16 weeks

Secondary outcomes (8)
  1. Percentage of participants who experienced rapid virologic response (RVR)

    Measured: Week 4

  2. Percentage of participants who experienced early virologic response (EVR)

    Measured: Week 12

  3. Percentage of participants who experienced sustained virologic response 8 weeks after the end of treatment (SVR8)

    Measured: Up to 20 weeks

  4. Percentage of participants who experienced sustained virologic response 12 weeks after the end of treatment (SVR12)

    Measured: Up to 24 weeks

  5. Percentage of participants who experienced sustained virologic response 24 weeks after the end of treatment (SVR24)

    Measured: Up to 36 weeks

  6. Pharmacokinetic Parameter:Area under the concentration-time curve from time zero to t

    Measured: Days 1, 4, 7, 10, 14, 21, 28, 42, 56 and 84

  7. Pharmacokinetic Parameter: Maximum observed drug concentration (Cmax)

    Measured: Days 1, 4, 7, 10, 14, 21, 28, 42, 56 and 84

  8. Pharmacokinetic Parameter: Trough drug concentration (Ctrough)

    Measured: Days 1, 4, 7, 10, 14, 21, 28, 42, 56 and 84

Timeline

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

  1. First posted14 May 2013 (estimated)
  2. Study startMar 2013
  3. Primary completionApr 2015
  4. Study completionApr 2015

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 2
Primary purpose
Treatment
Allocation
Randomised
Intervention model
Parallel groups
Masking
Double blind
Who is masked
Participant, Investigator
Enrolment
143 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT01852604
Sponsor's protocol ID
1894-005
Other IDs
IDX-06A-005
Status last verified
Apr 2015
First submitted
6 May 2013
Last updated
23 Apr 2015
Results posted
No
Data monitoring committee
Yes

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing Samatasvir, Simeprevir and Ribavirin (RBV) in people with Chronic Hepatitis C Virus, run by Merck Sharp & Dohme LLC.

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 4 inclusion and 8 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 23 Apr 2015. Status can change between updates, so confirm with the study contact before making plans.

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 2 studies give the treatment to a larger group to see whether it has the intended effect and to keep checking safety.

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?

Percentage of participants who experienced an adverse event (AE) (time frame: Up to approximately 95 weeks). The study lists 4 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 23 Apr 2015.

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