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Chronic Hepatitis CPhase 2LEPTONNCT02202980

Efficacy and Safety of Oral Regimens for the Treatment of Chronic HCV Infection

A Phase 2 study testing LDV/SOF, RBV and SOF/VEL in people with Chronic Hepatitis C, run by Gilead Sciences at 2 sites in New Zealand.

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 study will evaluate the antiviral efficacy, safety, and tolerability of combination therapy with oral regimens for the treatment of chronic hepatitis C virus (HCV) infection. Read more about this study

Who is it for?
Ages 18 years and older
Conditions the study is for
Chronic Hepatitis C
What is being tested?
LDV/SOF, RBV and SOF/VEL
Type of treatment
Pill or oral medicine
Could I receive a placebo?
No, everyone receives an active treatment
How many people
273 participants
Where
2 sitesNew Zealand
Study dates
4 Aug 2014to 9 May 2016
Phase
Phase 2
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

  • Willing and able to provide written informed consent
  • Chronic HCV infection
  • Cirrhosis determination (liver biopsy may be required)
  • Screening laboratory values within specified limits
  • Males and females of childbearing potential who engage in heterosexual intercourse must agree to use protocol specified method(s) of contraception
  • Specific genotype, prior medical history, or concurrent disease as required by the specific study group

Who cannot join

  • History of clinically significant illness or any other medical disorder that may interfere with subject treatment, assessment or compliance with the protocol
  • Pregnant or nursing female, or male with pregnant female partner
  • Clinical hepatic decompensation (ie, ascites, encephalopathy or variceal hemorrhage)
  • Use of any prohibited concomitant medications
  • Note: Other protocol defined Inclusion/Exclusion criteria may apply.

Trial locations and contacts

2 sites in 1 country.

New Zealand2 sites
  • Study site

    Auckland

  • Study site

    Christchurch

Other trials in New Zealand

About this study

Official title: A Phase 2, Multicenter, Open-Label Study to Assess the Efficacy and Safety of Oral Regimens for the Treatment of Chronic HCV Infection

This study will evaluate the antiviral efficacy, safety, and tolerability of combination therapy with oral regimens for the treatment of chronic hepatitis C virus (HCV) infection.

Being tested
LDV/SOF, RBV, SOF/VEL, VOX
Medical subject headings
Hepatitis C, Chronic

What participants receive

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

  • LDV/SOFDrug

    Also called Harvoni®, GS-5885/GS-7977

    90/400 mg FDC tablet administered orally once daily

  • RBVDrug

    Tablets administered orally in a divided daily dose according to package insert weight-based dosing recommendations (< 75 kg = 1000 mg and ≥ 75 kg = 1200 mg)

  • SOF/VELDrug

    Also called Epclusa®, GS-7977/GS-5816

    400/100 mg FDC tablet administered orally once daily

  • VOXDrug

    Also called GS-9857

    100 mg tablet administered orally once daily with food

Study groups in NCT02202980
Study groupRoleWhat they receive
LDV/SOF+RBV 24 Weeks (Cohort 1 Group 1)ExperimentalParticipants who previously received ledipasvir/sofosbuvir (LDV/SOF) fixed-dose combination (FDC) plus ribavirin (RBV) for ≥ 12 weeks without achieving sustained virologic response at 12 weeks following treatment (SVR12) will receive LDV/SOF+RBV for 24 weeks.
Receives: Drug: LDV/SOF; Drug: RBV
LDV/SOF+RBV 12 Weeks (Cohort 1 Group 2)ExperimentalParticipants who previously received a sofosbuvir-based regimen without achieving SVR12 were initially enrolled to receive LDV/SOF+RBV for 12 weeks (excluding participants who previously received LDV/SOF+RBV for ≥ 12 weeks). Participants who did not achieve sustained virologic response at 12 weeks were then moved to Cohort 1 Group 1.
Receives: Drug: LDV/SOF; Drug: RBV
LDV/SOF 12 Weeks GT2 (Cohort 2 Group 1)ExperimentalParticipants with genotype 2 (GT2) HCV infection will receive LDV/SOF FDC for 12 weeks.
Receives: Drug: LDV/SOF
LDV/SOF 8 Weeks GT2 (Cohort 2 Group 2)ExperimentalParticipants with GT2 HCV infection will receive LDV/SOF FDC for 8 weeks.
Receives: Drug: LDV/SOF
LDV/SOF 12 Weeks GT1/GT2/GT4 (Cohort 3 Group 1)ExperimentalParticipants with genotypes 1 (GT1), 2 (GT2), or 4 (GT4) HCV infection and extrahepatic manifestations of chronic HCV infection will receive LDV/SOF FDC for 12 weeks.
Receives: Drug: LDV/SOF
LDV/SOF+RBV 12 Weeks GT3 (Cohort 3 Group 2)ExperimentalParticipants with genotype 3 (GT3) HCV infection and extrahepatic manifestations of chronic HCV infection will receive LDV/SOF FDC plus RBV for 12 weeks.
Receives: Drug: LDV/SOF; Drug: RBV
SOF/VEL+VOX 6 Weeks GT1 (Cohort 4)ExperimentalTreatment-naive participants with GT1 HCV infection without cirrhosis will receive VOX only on Day 1 followed by sofosbuvir/velpatasvir (SOF/VEL) + voxilaprevir (VOX) for 6 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 4 Weeks GT1 (Cohort 5 Group 1)ExperimentalTreatment-naive participants with GT1 HCV infection without cirrhosis will receive SOF/VEL+VOX for 4 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 6 Weeks GT1 (Cohort 5 Group 2)ExperimentalTreatment-naive participants with GT1 HCV infection with cirrhosis will receive SOF/VEL+VOX for 6 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 6 Weeks GT3 (Cohort 5 Group 3)ExperimentalTreatment-naive participants with GT3 HCV infection with cirrhosis will receive SOF/VEL+VOX for 6 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 8 Weeks GT1 (Cohort 5 Group 4)ExperimentalTreatment-experienced participants with GT1 HCV infection with cirrhosis who were previously treated with pegylated interferon (Peg-IFN)+RBV will receive SOF/VEL+VOX for 6 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 8 Weeks GT3 (Cohort 5 Group 5)ExperimentalTreatment-experienced participants with GT3 HCV infection with cirrhosis who were previously treated with Peg-IFN+RBV will receive SOF/VEL+VOX for 6 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 8 Weeks GT1 (Cohort 5 Group 6)ExperimentalTreatment-experienced participants with GT1 HCV infection with or without cirrhosis who were previously treated with non-structural protein (NS3/4A) protease inhibitor (PI) will receive SOF/VEL+VOX for 6 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 6 Weeks GT1 (Cohort 5 Group 7)ExperimentalTreatment-experienced participants with GT1 HCV infection with or without cirrhosis who were previously treated with direct-acting antivirals (DAA) will receive SOF/VEL+VOX for 6 weeks.
Receives: Drug: SOF/VEL; Drug: VOX
SOF/VEL+VOX 8 Weeks GT3 (Cohort 5 Group 8)ExperimentalTreatment-experienced participants with GT3 HCV infection with or without cirrhosis who were previously treated with DAA will receive SOF/VEL+VOX for 8 weeks.
Receives: Drug: SOF/VEL; Drug: VOX

What is being measured

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

  1. Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12)

    SVR12 was defined as HCV RNA < the lower limit of quantitation (LLOQ; ie, 15 IU/mL) at 12 weeks after stopping study treatment.

    Measured: Posttreatment Week 12

  2. Percentage of Participants Who Permanently Discontinued Any Study Drug Due to an Adverse Event

    Measured: Up to 24 weeks

Secondary outcomes (3)
  1. Percentage of Participants With SVR at 4 and 24 Weeks After Discontinuation of Therapy (SVR4 and SVR24)

    SVR4 and SVR 24 were defined as HCV RNA < LLOQ at 4 and 24 weeks after stopping study treatment, respectively.

    Measured: Posttreatment Weeks 4 and 24

  2. Percentage of Participants With Virologic Failure

    Virologic failure was defined as:

    • On-treatment virologic failure:
    • Breakthrough (confirmed HCV RNA ≥ LLOQ after having previously had HCV RNA < LLOQ while on treatment), or
    • Rebound (confirmed > 1 log10 IU/mL increase in HCV RNA from nadir while on treatment), or
    • Non-response (HCV RNA persistently ≥ LLOQ through 8 weeks of treatment)
    • Virologic relapse:
    • Confirmed HCV RNA ≥ LLOQ during the posttreatment period having achieved HCV RNA < LLOQ at last on-treatment visit.

    Measured: Up to Posttreatment Week 24

  3. Percentage of Participants With HCV RNA < LLOQ While on Treatment by Study Visit

    Measured: Weeks 1, 2, 4, 6, 8, 12, 16, 20, and 24 (depending on treatment duration; Week 6 data was not collected for Cohorts 1-3)

Timeline

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

  1. First posted29 Jul 2014 (estimated)
  2. Study start4 Aug 2014
  3. Primary completion16 Mar 2016
  4. Study completion9 May 2016

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
Non-randomised
Intervention model
Parallel groups
Masking
None (open label)
Enrolment
273 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT02202980
Sponsor's protocol ID
GS-US-337-1468
Acronym
LEPTON
Status last verified
Nov 2017
First submitted
25 Jul 2014
Last updated
16 Nov 2018
Data monitoring committee
No
FDA-regulated drug
Yes
FDA-regulated device
No
Individual data sharing
Yes: Qualified external researchers may request IPD for this study after study completion. For more information, please visit our website at http://www.gilead.com/research/disclosure-and-transparency.

Publications

  • Gane EJ, Svarovskaia ES, Hyland RH, Stamm LM, Osinusi A, Brainard DM, Chodavarapu K, Miller MD, Mo H, Schwabe C. Resistance Analysis of Treatment-Naive and DAA-Experienced Genotype 1 Patients with and without Cirrhosis Who Received Short-Duration Treatment with Sofosbuvir/GS-5816+ GS-9857 [Poster 713]. J Hepatol 2015;62:563A

  • Gane EJ, Schwabe C, Hyland RH, Yang Y, Svarovskaia E, Stamm LM, Brainard DM, McHutchison JG, Stedman CA. Efficacy of the Combination of Sofosbuvir, Velpatasvir, and the NS3/4A Protease Inhibitor GS-9857 in Treatment-Naive or Previously Treated Patients With Hepatitis C Virus Genotype 1 or 3 Infections. Gastroenterology. 2016 Sep;151(3):448-456.e1. doi: 10.1053/j.gastro.2016.05.021. Epub 2016 May 27.

    PubMed 27240903
  • Gane EJ, Hyland RH, Yang Y, Svarovskaia E, Stamm LM, Brainard DM, McHutchison JG, Stedman CAM. Efficacy of Ledipasvir Plus Sofosbuvir for 8 or 12 Weeks in Patients With Hepatitis C Virus Genotype 2 Infection. Gastroenterology. 2017 May;152(6):1366-1371. doi: 10.1053/j.gastro.2017.01.017. Epub 2017 Jan 27.

    PubMed 28137593

Questions about this trial

What is this clinical trial studying?

A Phase 2 study testing LDV/SOF, RBV and SOF/VEL in people with Chronic Hepatitis C, run by Gilead Sciences at 2 sites in New Zealand.

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 6 inclusion and 5 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 16 Nov 2018. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in New Zealand. 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 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?

Yes. Results are posted in the registry (first posted 17 Nov 2017). 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?

Percentage of Participants With Sustained Virologic Response (SVR) 12 Weeks After Discontinuation of Therapy (SVR12) (time frame: Posttreatment Week 12). The study lists 2 primary outcomes in all. 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 NCT02202980, which also lists 3 linked publications.

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 16 Nov 2018.

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